Title of Invention

A SELECTIVE ESTROGEN RECEPTOR MODULATORS COMPOUND CONTAINING A PHENYLSULFONYL GROUP OF FORMULA I.

Abstract The present invention relates to a selective estrogen receptor modulator compound containing phenylsulfonyl group formula I: or a pharmaceutical acid addition salt thereof; useful, e.g., for treating endometriosis and/or uterine leiomyoma/leiomyomata.
Full Text FIELD OF THE INVENTION
The present invention relates to a selective estrogen receptor modulator compound containing
phenylsulfonyl group formula I:

In addition, present invention relates to a pharmaceutical composition that comprises a composition of
formula I. or a pharmaceutical acid add salt thereof, and a pharmaceutical carrier. Further the present
invention also relates the pharmaceutical composition of the present invention useful in treating
endometriosis and/or uterine fibrosis.
BACKGROUND OF THE PRIOR ART
( terine leiomyoma/leiomyomata (uterine fibroid disease) is a clinical problem that goes under a
variety of names, including uterine fibrosis uterine hypertrophy uterine leiomyomata. myometrial
hypertrophy, fibrosis uteri, and fibrotic metritis. Essentially., ulcrine fibrosis is a condition where there
is an inappropriate deposilion of fibroid issue on the wall of the uterus. This condition is a cause of
dysmenorrhea and infertility in women.
I indometriosis is a condition of severe dy smenorrhed, which is accompanied by severe pain. bleeding
into the endometrial masses or peritoneal cavity and often leads to infertility. The symptoms' cause
appears to be ectopic endometrial growths that respond inappropriately to normal hormonal control
and are located in inappropriate tissues.
Because of the inappropriate locations for endometrial growth, the tissue seems to initiate local
inflammatory-like responses causing macrophage infiltration and a cascade of events leading in
initiation of the painful response. Evidence suggests that a cause of uterine fibrosis

and endometriosis is an inappropriate response of fibroid tissue and/or endometrial tissue to
estrogen.
Many publications have appeared within the last ten years disclosing selective estrogen
receptor modulators (SERMs). e. g., U.S. Patent No.'s 5,484. 795, 484. 798, 5,510, 358.
5,998, 401 and WO 96/09040. Many of these SFRMs. generally speaking- have been tound to
have a beneficial estrogen agonist activity in the bone and cardiovascular system, with a
concomitant beneficial estrogen antagonist activity in the breast. A small, particularly useful
subset of such compounds has also been found to have an estrogen antagonist effect in the
uterus. A compound with this SERM profile holds particular promise in treating uterine
fibroid disease and/or endometriosis.
However the clinical use of such SERM compounds for the treatment of uterine fibroid
disease and/or endometriosis, particularly in pre-menopausal vvomen. has been hampered by
the propensity of said compounds to have significant ovarian stimulatory effects. A great need
currently exists, therefore, for new SERM compounds that behave as estrogen antagonists in
the uterus that do not significantly stimulate the ovaries.
STATEMENT OF THE INVENTION:
The present invention relates to a compound of formula 1:

wherein
m, q and r are independently 0,1 of 2; n is 0 or 1 , R is H or COR2 : R1 is inclependently at
each occurrence OH.CF2, halo. C1-C6 alkyl or C1-C6alkoxy. R1 and R1 are independently
C1-C6 alkyl, C1-C6 alkoxy. NR3R20. CF3 or CH2CF3 or when n and q are O, the-SO2R molety

way combine with the phenyl ring to which it is attached to form a moiety of formula (a) or

wherein t and v are 0.1 or 2 provided that the sum of t+v must be 2: R2 is C1-C6-alkyl; C1-C6
aikoxy; NR4R4 : phenoxy: or pheny; optionally substituted with, halo: R3 is C1-C6, alkyl or
phenyl; R3a and R4 are independently at each occurrence H. C1-C6 alkyl. or phenyl; X is O.
CH2 or CO: X1 is 0 or NR5: R5 is Fi or C1-C6 alkyl : and R8 is H or methyl provided that if r is
1 or 2. then R8 must be H and that if r is 0. then R8 must be methyl: and Y is S, CH2CH2 or
CH2CH2 or a pharmaceutical acid addition salt thereof.

Summary of Invention
The present invention relates to a compound of formula I:



wherein:
m, q and r are independently 0,1 or 2;
n is O or 1;
R is H or COR2;
R0 is independently at each occurrence OH, CF3, halo, C1-C6 alkyl or
C1-C6alkoxy;
R1 and R1' are independently C1-C6 alkyl, C1-C6 alkoxy, NR3R3a, CF3
or CH2CF3; or when n and q are 0, the -SO2R1 moiety may combine with the phenyl ring
to which it is attached to form a moiety of formula (a) or (b):

wherein t and v are 0, 1 or 2 provided that the sum of t + v must be 2;
R2 is C1-C6 alkyl; C1-C6 alkoxy; NR4R4; phenoxy; or phenyl optionally
substituted with halo;
R3 is C1-C6 alkyl or phenyl;
R3a and R4 are independently at each occurrence H, C1-C6 alkyl or
phenyl;
X is O,CH2 or CO;
X is O or NR5;

R5 is H or C1-C6 alkyl;
R8 is H or methyl provided that if r is 1 or 2, then R8 must be H and that if
r is 0, then R8 must be methyl; and
Y is S, CH2CH2 or CH=CH; or a pharmaceutical acid addition salt
thereof.
The present invention also relates to a pharmaceutical composition that comprises
a compound of formula I, or a pharmaceutical acid addition salt thereof, and a
pharmaceutical carrier. In another embodiment, the pharmaceutical composition of the
present invention may be adapted for use in treating endometriosis and/or uterine fibrosis.
The present invention also relates to methods for treating endometriosis and/or
uterine fibrosis employing a compound of formula I, or a pharmaceutical acid addition
salt thereof.
In addition, the present invention relates to a compound of formula I, or a
pharmaceutical acid addition salt thereof, for use in treating endometriosis and/or uterine
fibrosis. The present invention is further related to the use of a compound of formula I, or
a pharmaceutical acid addition salt thereof, for the manufacture of a medicament for
treating endometriosis and/or uterine fibrosis.
The present invention further relates to a compound of formula II:

wherein:
m, n, q, r, R0, R1 , R1', R8 and X and Y are as described above for the
formula I compound;
u is 0,1 or 2;
R6 is H, C1-C6 alkyl, benzyl or COR2 wherein R2 is as described above
for the formula I compound;
X2 is O or NR7; and

R7 is H, C1-C6 alkyl or CO2(C1-C6 alkyl); provided that u can only be 2
when R6 is C1-C6 alky] or benzyl; or an add addition salt thereof; provided that the
compound of formula H is not:

useful, e.g., as chemical intermediates to the formula I compounds.
Detailed Description
For the purposes of the present invention, as disclosed and claimed herein, the
following terms are defined below.
The term "halo" refers to fluoro, chloro, bromo and iodo. The term "C1-C6 alkyl"
represents a straight, branched or cyclic hydrocarbon moiety having from one to six
carbon atoms, e.g., methyl, ethyl, n-propyl, isopropyl, cyclopropyl, n-butyl, isobutyl, sec-
butyl, t-butyl, cyclobutyl, pentyl, cyclopentyl, hexyl, cyclohexyl and the like. Moieties
such as a cyclobutylmethylenyl are also included within the scope of a C1-C6 alkyl group.
The term "C1-C4 alkyl" refers specifically to methyl, ethyl, n-propyl, isopropyl,
cyclopropyl, n-butyl, isobutyl, sec-butyl, t-butyl, cyclopropylmetbyl and cyclobutyl. A
"C1-C6 alkoxy" group is a C1-C6 alkyl moiety connected through an oxy linkage.
The term "pharmaceutical" when used herein as an adjective means substantially
non-deleterious.
Preferred Compounds (Embodiments) of the Invention

Certain compounds of the invention are particularly interesting and are preferred.
The following listing sets out several groups of preferred compounds. It will be
understood that each of the listings may be combined with other listings to create
additional groups of preferred compounds.

a) m is 0 or 2;
b) m is 0;
c) m is 2;
d) n is 0;
e) n is 1;
f) q is 0 or 1;
g) q is 0;
h) r is 1;
i) r is 2;
j) R is H;
k) R is COR2;
1) R0 is OH, raethoxy, CF3, fluoro, chloro, methyl or ethyl;
m) R0 is OH, CF3, fluoro, chloro, methyl or ethyl;'
n) R0 is CF3 or fluoro;
o) the -SO2R1 moiety is at the para-position of the phenyl ring to which it is
attached;
p) the -SO2R1 moiety does not combine with the phenyl ring to which it is
attached to form a moiety of formula (a) or (b);
q) R1 is C1-C4 alkyl or CF3;
r) R1 is methyl, ethyl, n-propyl, isopropyl, cyclopropyl, n-butyl, isobutyl, sec-
butyl, t-butyl, cyclobutyl or CF3;
s) R1 is methyl, ethyl, cyclopropyl or CF3;
t) R1 is methyl, ethyl or CF3;
u) R1 is methyl;
v) R1 is ethyl;
w) R1 is cyclopropyl;
x) R1 is CF3;

y) R1' is C1-C4 alkyl or CF3;
z) R1' is methyl, ethyl, n-propyl, isopropyl, cyclopropyi, n-butyl, isobutyi, sec-
butyl, t-butyl, cyclobutyl or CF3;
aa) R1' is methyl, ethyl, cyclopropyl or CF3;
bb) R1' is methyl, ethyl or CF3;
cc) R1' is methyl;
dd) R1' is ethyl;
ee) R1' is cyclopropyl;
ff) Rl'is CF3;
gg) R2 is C1-C6 alkyl or phenyl;
hh) R2 is C1-C6 alkyl, NHCH3 or phenyl;
ii) R2 is C1-C4 alkyl, NHCH3 or phenyl;
jj) R5 is H, methyl or ethyl;
kk) R5 is H;
11) X is O:
nun) X1 is O;
nn) X1 is NR5;
00) Yis S;
pp) Y is CH=CH;
qq) Y is CH2CH2;
rr) the compound of formula I is the hydrochloride salt.
Synthesis
The compound of formula I may be prepared as described in the following
Schemes, Preparations and Examples.


In Scheme 1, a compound of formula IV is reacted with a compound of formula III
under usual "Suzuki" or "Stille" reaction conditions, i.e., wherein one of substituent "A"
or "D" is a boronic acid/ester or alkyl stannane moiety and the other is a leaving group,
e.g., chloro, bromo or iodo or a sulfonate group such as trifluoromethyl sulfonate. When
R6 is alkyl (preferably methyl) or benzyl, said R6 groups may be removed under standard
conditions (see, e.g., the procedures that follow or the latest edition of Greene, Protective
Groups in Organic Synthesis, John Wiley & Sons, New York, N. Y.) to provide the
compound of formula I where R is H. When u is 0 or 1, the coupled product may be
oxidized under standard conditions (see preparations below) to prepare the corresponding

mono or bis-sulfone of formula 1(a) where m is 2. A formula I or 1(a) compound where R
is H may then be further derivatized to prepare a compound of formula I where R is
COR2

In Scheme 2, the compound of formula 1(b) is formed by first reacting a compound
of formula VI (prepared essentially as taught in U.S. Pat. No. 5,929,090 which is
incorporated herein by reference) with a compound of formula VIII under standard

nucleophflic displacement conditions to give a product compound feat may be deprotected
and further derivatized as described supra to give the compound of formula 1(b).
The compound of formula 1(c) may also be prepared from a compound of formula
Vas depicted in Scheme 2. The compound of formula VII may be prepared by first
reacting the compound of formula V with a base followed by the addition of 4-fluoro-
benzaldehyde. The product aldehyde may be converted to the corresponding
hydroxy/sulfonyl compound of formula VH by reaction, e.g., first with hydrogen peroxide
followed by reaction with sodium perborate monohydrate. The compound of formula VII
may then be reacted with a compound of formula VIII under standard nucleophilic
displacement conditions to give a product compound that may be deprotected and further
derivatized as described supra to give the compound of formula 1(c).

In Scheme 3, an alternative preparation of a compound of formula I where R1 and
R1' are independently C1-C6 alkyl, CF3 or CH2CF3 and the SO2R1 moiety does not
combine with the R0 moiety is shown. A compound of formula DC (prepared in an
analogous fashion to the reaction of a compound of formula HI with a compound of

formula IV described in Scheme 1) may be reacted with the thiolate of a compound of the
formula HSR1a where R1a is C1-C6 alkyl, CF3 or CH2CF3, e.g., sodium methanethiolate
which results in displacement of the "Lg" substituent(s). The "Lg" moiety found in the
compound of formula DC is a substituent mat activates the phenyl group to which it is
attached toward nucleophilic aromatic substitution. The thioether formula X product may
then be oxidized to form the corresponding sulfone (or sulfoxide) compound mat may be
deprotected and further derivatized as described supra to give the compound of formula
1(d). When more man Lg substituent may be introduced into a compound of formula IV,
the methodology of Scheme 3 is especially adaptable to prepare a compound of formula
1(e) where n is 1 and m is 0 or 1.
. Compounds of formula III, IV and VIII may be prepared as shown below or by
procedures analogous to those found in the art. Compounds of formula V may be
prepared by analogous procedures to those described in U.S. Pat No. 5,929,090 or as
described below. Compounds of formula HSR1a are, in general, commercially available
or can be prepared by procedures readily available to the ordinarily skilled synthetic
organic chemist.
General Experimental Details
Electrospray mass spectra is obtained, e.g., on a Finnigan LCQ Duo instrument
using a mobile phase of 50% acetonitrile, 25% methanol, and 25% 2mM aqueous
ammonium acetate.
Preparative HPLC is performed, e.g., on a Gilson Preparative System with
Unipoint Software and dual wavelength detection at 220 and 254 nm as well as Finnigan
aQa MS. A 20-mm x 250-mm ODS-AQ column with a particle size of 15 microns may
be used as the stationary phase. The eluent is a binary system of bottle A (0.1%
trifluoroacetic acid (TFA), 1% isopropyl alcohol (IPA) in water) and bottle B (0.05%
TFA, 1 % PA in acetonitrile). The standard method is a gradient of 30-95% B unless
otherwise indicated. The compounds purified by this method were isolated as TFA salts.
Preparative HPLC's may also be performed on a Biotage ParallelFlex system with
proprietary dual wavelength detection and software. A 30-mm x 150-mm or 19-mm x
250 mm Xterra column with a particle size of 10 microns is used as the stationary phase

and 10mM NH4+HCOO-/ 10mM NH4OH is used as mobile phase A.and 100% acetonitrile
is used as a mobile phase B.
Preparation 1
Trifluoro-methanesulfonic acid 6-methoxy-1-[4-(2-piperidin-1-yl-ethoxy)-phenoxy]-
naphthalen-2-yl ester
Add 6-methoxynaphthalene-2-ol (20 g, 114.8 mmol) to dimeraylformamide
(DMF, 250 mL) at ambient temperature followed by N-brornosuccinimide (NBS, 21.5 g,
120 mmol) over a 30 minute period. After 45 minutes, dilute with water (800 mL),
collect and dry the precipitate to provide 25.5 g (87%) of 1-bromo-6-methoxy-naphthalen-
2-ol.
Add 1-bromo-6-methoxy-naphthalen-2-ol (66.7 g, 264 mmol), potassium
carbonate (K2CO3, 40.0 g, 290 mmol) and benzyl bromide (49.6 g, 290. mmol) to DMF
(800 mL). Stir the mixture at ambient temperature for 1 hour. Add water (400 mL) to
precipitate the product Collect the precipitate and wash the filter cake with heptane (3 X
125 mL) then dry to provide 83.7 g of 2-benzyloxy-1-bromo-6-methoxy-naphthalene
(86.2%).
Combine toluene (200 mL), 2-benzyloxy-1-bromo-6-methoxy-naphthalenc (30 g,
87.4 mmol), 4-(2-piperidm-1-yl-ethoxy)phenol (23.2 g, 105 mmol) and cesium carbonate
(34.4 g, 105 mmol), heat the mixture to reflux. Remove a portion of the toluene (100
mL). Add ethyl acetate (390 mg, 4.37 mmol) and copper trifiate benzene complex (2.20
g, 4.37 mmol) to the reaction mixture and stir for 5 minutes. Remove the solvent by
distillation and heat the resulting residue to 174°C for 1.5 hours. Dissolve the residue in a
mixture of ethyl acetate (200 mL) and aqueous HCl (1 N, 90 mL). Separate and
concentrate the organics to a residue. Column chromatograph the residue to give 12.4 g
of 1-{2-[4-(2-benzyloxy-6-memoxy-naphthalcn-1-yloxy)-phenoxy]-ethyl}-piperidine
(30%).
Add 1-{2-[4-(2-benzyloxy-6-methoxy-naphthalen-1-yloxy)-phenoxy]-ethyl}-
piperidine (12.4 g, 25.5 mmol) to a methanol/ethyl acetate mixture (1:1,490 mL) and heat
to form a solution. Remove the heat and add ammonium formate (4.83 g, 76.6 mmol) and
Pd(OH)2 on Carbon (20 % ww, 1.58 g, 1.12 mmol). Reflux for 50 minutes then filter the

mixture. Concentrate the filtrate to provide 9.9 g of 6-roethoxy-1-[4-(2-piperidin-1-yl-
ethoxy)-phenoxy]-naphthalene-2-ol (98.5%).
Cool dichloromethane (290 mL), triethylamine (3.08 g, 30.4 mmol) and 6-
metboxy-1-[4-(2-piperidin-1-yl-ethoxy)-phenoxy]-naphthalene-2-ol (9.2 g, 23.4 g) to -
50°C and add trifluoromethanesulfonic acid anhydride (7.26 g, 25.7 mmol). Stir the
resulting mixture at -50°C for 2 hours then allow the mixture to warm to ambient
temperature before stirring an additional hour. Add brine (150 mL) and separate the
organics. Wash the organics with NaHCO3 then dry before concentrating to a residue.
Crystallized the residue with ethyl ether - hexanes to provide 11.2 g of the title compound
(90.9%).
Preparation 2
Trifluoro-methanesulfonic add 6-hydroxy-1-[4-(2-piperidin-1-yl-ethoxy)-phenoxy]-
napbthalen-2-yl ester
Add 2M hydrogen chloride in ether (1.5 mL, 3 nunol) to a solution of the
compound of Preparation 1 (1.07 g, 2.04 mmol) in dichloromethane (20 mL) and remove
solvent under vacuum. Dissolve the hydrochloride salt in dichloromethane (40 mL) and
cool in ice bath. Add boron tribromide (0.58 mL, 6.12 mmol), stir for 3.5 hours, warm to
ambient temperature and stir for 15 minutes, cool in ice bath and quench with ice cold
saturated aqueous sodium bicarbonate. Extract aqueous layer with dichloromethane,
combine organic layers and dry with magnesium sulfate, remove solvent under vacuum
and chromatograph on silica gel using dichloromethane/methanol mixtures to give 990
mg of the title compound (95%).

preparation 3
Trifluoro-methanesulfonic acid e-benzyloxy-1-[4-(2-piperidin-1-yl-ethoxy)-phenoxy]-
naphthalen-2-yl ester
Combine trifluoromethanesulfonic acid 6-hydroxy-1-[4-(2-piperidin-1-yl-ethoxy)-
pbenoxy]-naphthalen-2-yl ester (247 mg, 0.48 mmol), triphenliphosphine (190 mg, 0.725
xnmol), benzyl alcohol (0.075 mL, 0.725 nunol) and tetrahydrofuran (5 mL) in a flask,
placed in an ice bath. Add dusopropyl azodicarboxylate (0.14 mL, 0.725-mmol), stir for 1
hour, warm to ambient temperature and stir for 30 minutes. Dilute with ethyl acetate and
wash with 50% saturated aqueous sodium bicarbonate, saturated aqueous sodium
chloride, dry with magnesium sulfate and remove solvent under vacuum.' Chromatograph
on silica gel with dichloromethane/methanol mixtures to give 213 mg of the title
compound (73%).

Combine 4-(methanesulfonyl)phenylboronic acid (6.8 g, 34 mmol), the compound
of Preparation 1 (6.6 g, 12.6 mmol), cesium fluoride (17.2 g, 113 mmol) and acetonitrile
(130 mL) in a 500 mL flame-dried flask fitted with a reflux condenser. In a separate flask
combine palladium (II) acetate (283 mg, 1.26 mmol) and tricyclohexylphosphine (530 mg,
1.9 mmol). Add acetonitrile (65 mL) and sonicate for 10 minutes under nitrogen. Add the
catalyst slurry to the mixture of substrates and heat in a 90°C oil bath for 30 minutes.
Cool the suspension to room temperature and filter through packed celite. Rinse the celite
with ethyl acetate and wash the filtrate with a 50:50 mixture of water and saturated
aqueous Na2CO3, saturated aqueous NH4Cl, and brine. Dry the organic layer (Na2SO4),

filter, and evaporate to obtain 10 grams of crude material. Treat this crude material with a
solution of 1% methanol (MeOH) in CH2Cl2 and remove the resulting white solid
impurity (400 mg) by filtration. Concentrate the filtrate and pre-adsorb the crude product
on to silica gel. Chromatograph the residue on a SiO2 column eluting the material with
methanol in dichloromethane (0 to 10%) to give 5.2 grams of the title compound (78%).
Concentrate the crude fractions, evaporate, and recrystallize from ethyl acetate to obtain
another 1.2 grams of the title compound (18%): mass spectrum (ion spray): m/z = 532.3
(M+H).
1-2-{4-[2-(4-Methanesulfonyl-phenyl)-6-methoxy-naphthalen-1-yloxy]-phenoxy}-ethyl)-
piperidine Hydrochloride
Dissolve the product of Example 1 (6.4 g, 12.1 mmol) in a mixture of ethyl
acetate, dichloromethane, and methanol (300 mL; 2.5:2.5:1). Cool the resulting solution
in an ice bam and treat with 2M HCl in diethyl ether (9.1 mL, 18.2 mmol). Concentrate
the solution in vacuo and dry at 50°C ( title compound (96%): mass spectrum (ion spray): m/z = 532.3 (M+H-HCl).
Example 3
6-(4-Methanesulfonyl-phenyl)-5-[4-(2-piperidin-1-yl-ethoxy)-phenoxy]-naphmalen-2-ol
Dissolve the product of Example 2 (6.45 g, 11.4 mmol) in dichloromethane (200
mL) and cool to 3°C in an ice bath. Treat this solution with neat BBr3 (5.4 mL, 57
mmol), dropwise over 5 minutes, and stir for 3 hours at 0 to 10°C. Slowly pour the
reaction mixture into a 1-liter separately funnel containing saturated aqueous NaHCO3
(300mL) and ice. Dilute the two-phase mixture with a solution of 7.5% MeOH in ethyl
acetate (EtOAc, 400mL) and brine (100mL). Separate the layers and back extract the
aqueous layer with 5% MeOH in EtOAc (2 X 150mL). Wash the combined organic
layers with brine (100mL), dry (Na2SO4), filter and evaporate to obtain 5.3 g of crude
product. Chromatograph the residue on a SiO2 column eluting the material with methanol


in dichloromethane (2.5 to 12%) to give 4.99 grams of the title compound (85%). Dry at
45°C ( Example 4
6-(4-Methanesulfonyl-phenyl)-5-[4-(2-piperidin-1-y]-ethoxy)-phenoxy]-naphthalen-2-ol
Hydrochloride
Slurry the product of Example 3 (2.8 g, 5.4 mmol) in a mixture of ethyl acetate,
ethyl ether, and methanol (50 mL; 5:1:4). Cool the mixture in an ice bath and treat with
2M HCl in diethyl ether (4.1 mL, 8.2 mmol). Collect the resulting solid on filter paper,
rinse with diethyl ether and dry at 45°C ( the title compound (95%): mass spectrum (ion spray): m/z =518.3 (M+H-HCl).

Dissolve the product of Example 3 (220 mg, 0.43 mmol) in pyridine (5 mL) and
treat sequentially with trimethylacetyl chloride (0.144 mL, 1.17 mmol) and
dimethylaminopyridine (DMAP, catalytic amount). Stir at ambient temperature for 18
hours and evaporate pyridine. Re-constitute the residue in ethyl acetate and wash with
saturated aqueous NH4Cl, saturated aqueous NaHCO3, and brine. Dry the organic layer
(Na2SO4), filter, and evaporate to obtain 277 mg of crude material. Pre-adsorb onto silica
gel and chromatograph on a SiO2 column eluting the material with methanol in
dichloromethane (0 to 6%) to give 235 mg of 2,2-dimethyl-propionic acid 6-(4-
methanesulfonyl-phenyl)-5-[4-(2-piperidin-1 -yl-ethoxy)-phenoxy3-naphthalen-2-yl ester.
Dissolve the free base in a mixture of ethyl acetate and diethyl ether (20 mL; 1:1). Cool

in an ice bath and treat with 2M HCl in diethyl ether (0.3 mL, 0.6 mmol). Collect the
precipitate on filter paper and rinse with diethyl ether to obtain 220 mg of the title
compound (80%): mass spectrum (ion spray): m/z = 602.4 (M+H-HCl).

Dissolve the product of Example 3 (220 mg, 0.43 mmol) in pyridine (5 mL) and
treat sequentially with benzoyl chloride (0.067 mL, 0.58 mmol), and DMAP (catalytic
amount). Stir at ambient temperature for 18 hours and evaporate pyridine. Partition
between saturated aqueous NH4Cl and ethyl acetate (containing 8% MeOH). After
separation of the layers extract the aqueous layer with ethyl acetate (containing 5%
MeOH) and combine the two organic layers. Wash with saturated aqueous NaHCO3 and
brine; Dry the organic layer (Na2SO4), filter, and evaporate to obtain 276 mg of crude free
base material. Pre-adsorb on to silica gel and chromatograph on a SiO2 column eluting
with methanol in dichloromethane (0 to 6%) to give 260 mg of benzoic acid 6-(4-
methanesulfonyl-phenyl)-5-[4-(2-piperidin-1-yl-ethoxy)-phenoxy]-naphthalen-2-yl ester.
Dissolve the free base in hot ethyl acetate (20 mL) and dilute with diethyl ether (20 mL).
Cool in an ice bath and treat with 2M HCl in diethyl ether (0.31 mL, 0.62 mmol). Collect
the precipitate on filter paper and rinse with diethyl ether to obtain 255 mg of the title
compound (91%): mass spectrum (ion spray): m/z =622.3 (M+H-HCl).


Dissolve the compound of Example 3 (] 11 mg, 0.21 nunol) in dichlorometfaane (2
mL). Add 4-fluorobenzoyl chloride (30 μl, 0.25 mmol) dropwise. After stirring for 10
minutes, pour the reaction mixture into saturated aqueous sodium bicarbonate (10 mL)
and extract with dichloromethane (10 mL). Dry the organic layer with sodium sulfate,
filter and concentrate in vacuo. Chromatograph the residue on a SiO2 column eluting
with methanol in dichloromethane (0 to 3%) to give 99 mg of the title compound (73%):
mass spectrum (ion spray): m/z = 640.3 (M+H).
Example 8
4-Fluoro-benzoic acid 6-(4-methanesulfonyl-phenyl)-5-[4-(2-piperidin-]-yl-edx)xy)-
phenoxy]-naphthalen-2-yl ester Hydrochloride
Dissolve the compound of Example 7 (99 mg, 0.15 mmol) in dichloromethane (3
mL) and add 2M HCl in ether (400 μL, 0.8 mmol). Remove the solvent in vacuo to yield
111 mg of the title compound (100%): mass spectrum (ion spray): m/z = 640.3 (M+H-
HCl).


Dissolve the compound of Example 3 (120 mg, 0.23 mmol) in dichloromethane (3
mL) and add isoburylchloroformate (38 pL, 0.30 mmol) dropwise. After stirring for 10
minutes, pour the reaction into vigorously stirred ether (10 mL) and filter. Dissolve the
solids in dichloromethane (10 mL) and wash with saturated aqueous sodium bicarbonate.
Dry the organic layer with sodium sulfate, filter and concentrate in vacuo.
Chromatograph the residue on a SiO2 column eluting with methanol in dichloromethane
(4%) to give 104 mg of the title compound (73%): mass spectrum (ion spray): m/z =
618.4 (M+H).
Example 10
Carbonic acid isobutyl ester 6-(4-methanesulfonyI-phenyl)-5-[4-(2-piperidin-1-yl-ethoxy)-
phenoxy]-naphthalen-2-yl ester Hydrochloride
Dissolve the compound of Example 9 (104 mg, 0.17 mmol) in dichloromethane (3
mL) and add 2M HCl in ether (400 pL, 0.8 mmol). Remove the solvent in vacuo to yield
81 mg of the title compound (73%): mass spectrum (ion spray): m/z = 618.3 (M+H-HCl).


Dissolve the compound of Example 3 (201 mg, 0.38 mmol) in dichloromethane (4
L) and add triethylamine (0.50 mL, 3.5 mmol) followed by methylisocyanate (500 mg, 8.7
mmol). After stirring for 30 minutes, pour the reaction mixture into saturated aqueous
sodium bicarbonate and extract with dichloromethane. Dry the organic layer with sodium
sulfate, filter and concentrate in vacuo. Chromatograph the residue on a SiO2 column
eluting with methanol in dichloromethane (0 to 4%) to give 130 mg of the title compound
(60%): mass spectrum (ion spray): m/z = 575.3 (M+H) and 518.3 (M-MeNCO).
Example 12
Methyl-carbamic acid 6-(4-methanesulfonyl-phenyl)-5-[4-(2-piperidin-1-yl-ethoxy)-
phenoxy]-naphthalen-2-yl ester Hydrochloride
Dissolve the compound of Example 11 (130 mg, 0.23 mmol) in dichloromethane
(3 mL) and add 2M HCl in ether (400 μL, 0.8 mmol). Remove the solvent in vacuo to
yield 81 mg of the title compound (73%): mass spectrum (ion spray): m/z = 575.3 (M+H-
HCl) and 518.3 (M+H-HCl-MeNCO).


Combine 4-(ethanesulfonyl)phenyl)boronic acid (1.83 g, 8.6 mmol), the
compound of Preparation 1 (1.5 g, 2.86 mmol), cesium fluoride (3.9 g, 25.7 mrnol) and
acetoriitrile (32 mL) in a 100 mL flame-dried flask fitted with a reflux condenser. In a
separate dried flask combine palladium (D) acetate (65 mg, 0.29 mmol) and
tricyclohexylphosphine (120 mg, 0.43 mmol). Add acetonitrile (16 mL) and sonicate for
10 minutes under nitrogen. Add the catalyst slurry to the mixture of substrates and heat in
a 90°C oil bath for 30 minutes. Cool the suspension to room temperature and filter
through packed celite. Rinse the celite with ethyl acetate and wash the filtrate with a
50:50 mixture of water and saturated aqueous Na2CO3, saturated aqueous-NH4Cl, and
brine. Dry the organic layer (Na2SO4), filter, and evaporate to obtain 2 grams of crude
material. Pre-adsorb the crude material onto silica gel and chromatograph on a SiO2
column eluting with methanol in dichloromethane (0 to 10%) to give 1.5 grams of l-(2-
{4-[2-(4-ethanesulfonyl-phenyl)-6-methoxy-naphthalen-1 -yloxy]-phenoxy}-ethyl)-
piperidine. Dissolve the free base in a mixture of ethyl acetate and diethyl ether (60 mL;
1:1). Cool in an ice bath and treat with 2M HCl in diethyl ether (2 mL, 4 mmol). Collect
the precipitate on filter paper and rinse with diethyl ether to obtain 1.5 grams of the title
compound (90%): mass spectrum (ion spray): m/z = 546.3 (M+H).

Example14
6-(4-Ethanesulfonyl-phenyl)-5-[4-(2-piperidin-1-yl-ethoxy)-phenoxy]-naphthalen-2-ol
Hydrochloride
Using the product from Example 13 (1.5 g, 2.58 nunol) and the procedure
described in Example 3, prepare 1.35 grams of 6-(4-ethanesulfonyl-phenyl)-5-[4-{2-
piperidin-1 -yl-ethoxy)-phenoxy]-naphthalen-2-ol. Dissolve the free base in a mixture of
ethyl acetate and diethyl ether (60 mL; 1:1). Cool in an ice bath and treat with 2M HCl in
diethyl ether (2 mL, 4 nunol). Collect the precipitate on filter paper, rinse with diethyl
ether and dry at 50ºC ( (89%): mass spectrum (ion spray): m/z = 532.3 (M+H).

Combine palladium (II) acetate (17 mg, 0.076 mxnol), tricyclohexylphosphine
(PCy3,32 mg, 0.11 mmol) and acetonitrile (4 mL). Sonicate the mixture for 5 minutes.
Combine the compound of Preparation 1 (400 mg, 0.76 mmol), cesium fluoride (1.00 g,
6.62 mmol,) 3-(methanesulfonyl)phenylboronic acid (460 mg, 2.30 mmol) and
acetonitrile (12 mL). Add the sonicated Pd/PCy3 suspension to the reaction vessel and
heat to 90°C for 30 minutes. Cool to room temperature and filter through a pad of Celite
and evaporate the solvent. Dissolve the residue in ethyl acetate (20 mL) and wash with
saturated aqueous NaHCCh (10 mL). Separate the layers, wash the organic layer with
brine (10 mL), dry with MgSO4, filter, and concentrate in vacuo. Chromatograph the
residue on a SiO2 column eluting with methanol in dichloromethane (0 to 5%) to give 270
mg of title compound (67%): mass spectrum (ion spray): m/z = 532.3 (M+H).

Example14
6-(4-Methanesulfonyl-phenyl)-5-[4-(2-piperidin-1-yl-ethoxy)-phenoxy]-naphthalen-2-ol
Hydrochloride

Dissolve the product of Example 15 in ethyl acetate (10 mL) and diethyl ether (5
mL). Add 2M HCl in diethyl ether (1 mL, 2.0 mmol). Conceatrate the slurry and dry in
vacuo. Dilute the residue in dichloromethane (5.0 mL) and blanket with nitrogen. Cool
the solution to 0°C with an external ice bath and add 1M BBr3 in dichloromethane (1.0
mL, 1.0 mmol). After 20 minutes, dilute the reaction mixture with ethyl acetate (25.0
mL) and add saturated aqueous NaHCO3 in parts (2 x 10 mL). Separate the layers, wash
the organic layer with brine (10 mL), dry with MgSO4, filter, and concentrate in vacuo.
Chromatograph the residue on a SiO2 column eluting 6-(3-methanesulfonyl-phenyl)-5-[4-
(2-piperidin-1-yl-ethoxy)-phenoxy]-naphthalen-2-ol with a step gradient of methanol in
dichloromethane (0 to 5%). Dissolve the free base in diethyl ether (5.0 mL), ethyl acetate
(6.0 mL) and methanol (1.0 mL) and add 2M HCl in diethyl ether (1 mL, 2.0 mmol).
Collect the precipitate on filter paper, rinse with diethyl ether and dry in vacuo ( Hg) at 65°C for 48 hours to give 73 mg of the title compound (26%): mass spectrum (ion
spray): m/z = 518.5(M[free base]+1).
Preparation 4
3-Fluoro-4-(methanesulfony])phenyl boronic acid

Combine 4-bromo-2-fluorothioanisole (US Patent No. 6,307,047, 2.7 g, 12 mmol),
oxone (38 g, 62 mmol) and methanol (200 mL) and stir for 12 hours. Filter through a pad
of silica gel and elute with ethyl acetate (500 mL). Evaporate solvent and partition
between dichloromethane (200 mL) and water (100 mL). Separate the layers, wash the
organic layer with saturated aqueous NaHCO3 (10 mL), brine (10 mL), dry with MgSO4,
filter, and concentrate in vacuo. Wash the crude solid with hexane (20 mL), ether (10
mL) and dry in vacuo to obtain 2.4 g of 4-bromo-2-fluoro-1-metlianesulfonyl-benzene
(78%).

Combine 4-bromo-2-fluoro-1-methanesulfonyl-benzene (1.7 g, 6.7 mmol), [1,1'-
bis(dipheny1phosphino)ferrocene]dichloropalladium(II) complex with dichloromethane
(Pd(dppf)Cl2-CH2Cl2,164 mg, 0.20 nunol), bis(pinacolato)diboron (1.79 g, 7.0 mmol),
potassium acetate (2 g, 20 mmol) and dimethylsulfoxide (DMSO, 100 mL). Heat the
reaction mixture at 90°C for 1 hour. Cool to room temperature and dilute with ethyl
acetate (20 mL). Wash with brine (10 mL), dry with MgSO4, filter, and concentrate in
vacuo. Chromatograph the residue on a SiO2 column eluting the material with ethyl
acetate in hexane (30%) to give 1.74 g (80%) of 2-(3-fluoro-4-methanesulfonyi-phenyl)-
4,4,5,5-tctramethyl-[1,3,2]dioxaborolane.
Combine 2-(3-fluoro-4-methanesulfony]-phenyl)-4,4,5,5-tetramethyl-
[1,3,2]dioxaborolane (222 mg, 0.74 mmol), NalO4 (474 mg, 2.2 mmol), tetrahydrofuran
"(THF, 4 mL) and water (1 mL). Stir for 2 hours and add 2M HCl in diethyl ether (0.2
mL). Stir another 12 hours and filter away the solid. Wash the filtrate with brine (10 mL),
dry with MgSO4 and evaporate the solvent. Wash the solid with hexane (2x10 mL) and
ether (10 mL). Dry the solid under vacuum to obtain 68 mg of the title compound (42%).

Combine palladium (II) acetate (4.2 mg, 0.019 mmol), tricyclohexylphosphine (10
mg, 0.036 mmol), the compound of Preparation 1 (92 mg, 0.18 mmol), cesium fluoride
(201 mg, 1.33 mmol,) 3-fluoro-4-(methanesulfonyl)phenyl boronic acid (68 mg, 0.31
mmol) and acetonitrile (10 mL). Heat to 90°C for 1 hour. Cool to room temperature and
dilute the solution with ethyl acetate (20 mL) and wash with saturated aqueous NaHCO3
(10 mL). Separate the layers, wash the organic layer with brine (10 mL), dry with
MgSO4, filter, and concentrate in vacuo. Chromatograph the residue on a SiO2 column

eluting with methanol in dichloromethanc (2 to 4%) to give 69 mg of title compound
(72%): mass spectrum (ion spray): m/z = 550.4 (M+H).
Example 18
6-(3-Fluoro-4-methanesulfonyl-phenyl)-5-[4-(2-piperidin-1-yl-ethoxy)-phenoxy]-
naphthalen-2-ol Hydrochloride
Dissolve the product of Example 17 in ethyl acetate (10 mL) and diethyl ether (S
mL). Add 2M HCl in diethyl ether (1 mL, 2.0 mmol). Concentrate the slurry and dry in
vacuo. Dilute the residue in dichloromethane (5.0 mL) and blanket with nitrogen. Cool
the solution to 0°C with an external ice bath. Add 1M BBr3 in dichloromethane (0.1 mL,
1.1 mmol) and stir for 1 hour. Add water (1.0 mL) and dichloromethane (10 mL).
Separate the layers, wash the organic layer with saturated aqueous NaHCO3 (10 mL) and
brine (10 mL), dry with MgSO4, filter, and concentrate in vacuo. Chromatograph the
residue on a SiO2 column eluting 6-(3-fluoro-4-methanesulfonyl-phenyl)-5-[4-(2-
piperidin-1-yl-ethoxy)-phenoxy3-naphthalen-2-ol with a step gradient of methanol in
dichloromethane (0 to 5%). Dissolve the free base in diethyl ether (5.0 mL), ethyl acetate
(6.0 mL) and methanol (1.0 mL) and add 2M HCl in diethyl ether (1 mL, 2.0 mmol).
Collect the precipitate on filter paper, rinse with diethyl ether and dry in vacuo ( Hg) at 65°C for 48 hours to give 19 mg of the title compound (26%): mass spectrum (ion
spray): m/z = 536.3 (M+H).
Preparation 5
2-(4-Trifluoromethanesulfonyl-phenyl)-4,4,5,5-tetramethyl-[1,3,2]dioxaborolane,
Dissolve 1-bromo-4-trifluoromethyl sulfide (2.5g, 9.7 mmol) in dichloromethane
(100 mL) in a 250 mL flask equipped with a reflux condenser. Add meta-
chloroperbenzoic acid (mCPBA, 6.1 g, 24.3 mmol, 68%) and heat the reaction to reflux
for 3 days. Cool the reaction to room temperature and wash the organic layer with 1N
aqueous NaOH (100 mL). Separate and dry the organic layer with sodium sulfate. Filter
and concentrate in vacuo to yield 2.5 g of 1-bromo-4-trifluoromethanesulfonyl-benzene
(90%).

Charge a flame-dried flask with 1-bromo-4-trifluoromethanesulfonyl-benzene
(500 mg, 1.73 mmol), bis(pinacolato)diboron (523 mg, 2.07 mmol), [1,1'-
bis(diphenylphoephino)ferrocene]dichloropal]adium(II), complex with dachloromethane
(1:1) (42 mg, 0.05 mmol) and potassium acetate (467 mg, 5.2 mmol). Dissolve the solids
with dimethylsulibxide (9 mL) and heat to 80°C under nitrogen for 4 hours. Cool the
reaction to room temperature and dilute with benzene (50 mL). Wash the organic layer
with water (20 mL) and brine (20 mL). Dry the organic layer with sodium sulfate, filter
and concentrate in vacuo. Chromatograph the resultant oil on a SiO2 column during with
ethyl acetate in hexanes (20%) to yield 560 mg of the title compound (96%).

Combine 2-(4-trifluoromethanesulfonyl-phenyl)-4,4,5,5-tetramemyl-
[1,3,2]dioxaborolane (560 mg, 1.67 mmol), the compound of Preparation 1 (300 mg, 0.57
mmol) and cesium fluoride (433 mg, 2.85 mmol) in a flame-dried Sask fitted with a
reflux condenser. In a separate dried flask combine palladium (II) acetate (25 mg, 0.11
mmol) and tricyclohexylphosphine (48 mg, 0.17 mmol). Add dry acetonitrile (6 mL) and
sonicate for 10 minutes under nitrogen. Add the catalyst mixture to the solids and plunge
the flask into a 90°C oil bath. After 25 minutes cool the black suspension to room
temperature and filter through celite with dichloromethane. Concentrate the filtrate in
vacuo. Chromatograph the resultant residue on a SiO2 column eluting with 2.5%
methanol in dichloromethane with 0.2% ammonium hydroxide to give 254 mg of the title
compound (76%): mass spectrum (ion spray): m/z = 586 (M+H).

Example 20
5-[4-(2-Piperidin-1 -yl-ethoxy)-phenoxy]-6-(4-trifluoromethanesulfonyl-phenyl)-
naphthalen-2-ol
Dissolve the compound of Example 19 (250 zng, 0.42 mmol) in dichloromethane
(5 mL). Add 2M HCl in ether (0.42 mL, 0.84 mmol) and stir for 1 minute. Remove the
solvent in vacuo and place on a high vacuum pump for 10 minutes. Dissolve the foam in
dry dichloromethane (5 mL), cool to 0°C and add BBr3 (0.20 mL, 2.1 mmol), dropwise.
After 25 minutes, slowly pour into saturated aqueous sodium bicarbonate (10 mL) and
extract with dichloromethane (2x10 mL). Dry the combined organic layers with sodium
sulfate and concentrate in vacuo. Chromatograph the residue on a SiO2 column eluting.
with methanol (3 to 5%) in dichloromethane with 0.2% ammonium hydroxide to yield
196 mg of the title compound (81%): mass spectrum (ion spray) m/z = 572.3 (M+H)..
Example 21
5-[4-(2-Piperidin-1-yl-ethoxy)-phenoxy]-6-(4-tnfluoromethanesulfonyl-phenyl)-
naphthalen-2-ol Hydrochloride
Dissolve the compound of Example 20 (196 mg, 0.34 mmol) in ethyl acetate (1
mL) and diethyl ether (9 mL). Add 2M HCl in diethyl ether (340 μl, 680 mmol) to the
stirred solution. Allow the suspension to stir for 10 minutes. Filter the solids through a
Buchner funnel. Dry the solids overnight at 45°C in a vacuum oven to yield 98 mg of the
title compound (47%): mass spectrum (ion spray) m/z = 572.3 (M+H-HCl).
Preparation 6
2-(1,1-Dioxo-2,3-dihydro-1H-1λ6-benzo[6]thiophen-5-yl)-4,4,5,5-tetramethyl-
[1,3,2]dioxaborolane
Dissolve 5-bromo-2,3-dihydro-benzo[b]thiophene (J. Am. Chem. Soc, 1973, 1916-
1925,4.3 g, 20 mmol) in MeOH (100 mL) and add oxone (36.9 g, 60 mrnol). Stir the
reaction mixture at room temperature overnight, and then remove the solid by filtration.
Concentrate the filtrate and purify the residue by flash column chromatography (silica gel,

20-40% EtOAc/Hexane) to give 4.24 g of 5-bromo-2,3-dihydro-benzo[b]thiophene 1,1-
dioxide(86%).
Dissolve 5-bromo~2,3-dihydro-benzo[b]thiophene 1,1-dioxide (2.0 g, 8.1 nunol)
in DMSO (60 mL). Add bis(pinacolato)diboron (2.26 g, 8.9 mmol), PdCl2(dppf)CH2Cl2
(330 mg, 0.41 mrnol), and potassium acetate (KOAc, 2.3S g, 24.3 mmol). Flush the flask
with N2, and then heat the reaction mixture to 80°C with stirring. Continue to heat the
reaction mixture for 3 hours, and then cool to room temperature. Add water (100 mL)
and extract the aqueous layer with EtOAc (3 x 100 mL). Combine the organic layers and
dry with Na2SO4, filter, concentrate and purify by flash column chromatography (silica
gel, 10 to 50% ethyl acetate in hexanes) to give 1.4 g (59%) of the title compound.

Dissolve 2-( 1,1 -dioxo-2,3-dihydro-1 H-1λ6-benzo[b]thiophen-5-yl)-4,4,5,5-
tetrarnethyl-[1,3,2]dioxaborolane (590 mg, 2.02 mmol) and the compound of Preparation
1 (350 mg, 0.67 mmol) in CH3CN (8 mL). Add palladium (II) acetate (Pd(OAc)2,15 mg,
0.007 mmol), tricyclohexylphosphine (28 mg, 0.1 mmol), and CsF (910 mg, 6 mmol).
Flush the flask with N2, and men heat the reaction mixture to 90°C with stirring.
Continue to heat the reaction mixture for 6 hours, and then cool to room temperature.
Add water (50 mL) and extract the aqueous layer with CH2Cl2 (3 x 25 mL). Combine the
organic layers and dry with Na2SO4, filter, concentrate and purify by flash column
chromatography (silica gel, 0-4% MeOH-NEUOH (10/1, v/v)/ CH2C12) to give 160 mg of
the title compound (44%): mass spectrum (ion spray): m/z - 544.3 (M+H).

Example 23 .
2-(1,1-Dioxo-2,3-dihydro-1H-1λ6-benzo[6]thiophen-5-yl)-4,4,5,5-tetramethyl-
[1,3,2]dioxaborolane
Dissolve the compound of Example 22 (160 mg, 0.29 mmol) in CH2Cl2 (5 mL)
and cool the solution to -78°C. Add HCl (0.2 mL, 2.0 M in diethyl ether (Et2O)) and stir
the reaction mixture for 10 minutes. Remove the solvent under reduced pressure and then
dissolve the solid in CH2Cl2 (5 mL) under N2. Cool the solution to 0°C and add BBr3
(370 mg, 1.46 mmol). Stir the reaction for one hour and add water (20 mL). Extract the
aqueous layer with CH2Cl2 (3 x 20 mL). Combine the organic layers and dry with
Na2SO4, filter, concentrate and purify by flash column chromatography (silica gel, 2-8%
MeOH-NH4OH (10/1, v/v)/ CH2Cl2) to give 6-(1,1-dioxo-2,3-dihydro-1H-1λ6-
benzo[b]thiophen-5-yl)-5-[4-(2-piperidin-1-yl-ethoxy)-phenoxy]-naphthalen-2-ol.
Dissolve the free base in CH2Cl2 (5 mL) and cool to -78°C. Add HCl (0.5 mL, 2.0 M in
Et2O) and stir the solution for 10 minutes. Remove the solvent under reduced pressure to
give a solid. Dry the solid at 40°C, overnight, in vacuo to give 42 mg of the title
compound (27%): mass spectrum (ion spray): m/z = 530.3 (M+H).
Preparation 7
(2,2-Dioxo-2,3-dihydro-1H-2λ6-benzo[c]thiophen-5-yl)-trimethyl-stannane
Dissolve 4-bromo-1,2-bis-bromomethyl-benzene (J. Org. Chem., 1418-1421,
1985; 3.42 g, 9.96 mmol) in a 2 to 1 mixture of ethanol (EtOH) and THF (1196 mL) and
heat the solution to 70°C with stirring. Add a solution of Na2S•9H2O (2.63 g, 10.96
mmol) in water (40 mL), dropwise, over 10 hours using a syringe pump. Continue to heat
and stir for another 10 hours. Cool to room temperature and remove the organic solvent
under reduced pressure. Add water (200 mL) to the residue and extract the aqueous layer
with EtOAc (3 x 200 mL). Combine the organic layers and dry with Na2SO4, filter,
concentrate and purify by flash column chromatography (silica gel, hexanes) to give 1.27
g of 5-bromo-1,3-dihydro-benzo[c]thiophene (59%).
Dissolve 5-bromo-1,5-dihydro-benzo[c]thiophene (1.25 g, 5.79 mmol) in
methanol (25 mL) and add oxone (10.7 g, 17.4 mmol). Stir the reaction mixture for 2

hours at 0°C and that add a 1M aqueous sodium bisulfite solution (100 mL). Stir the
reaction mixture for 10 minutes and add saturated NaHCO3 solution (200 mL). Extract
the aqueous layer with CH2Cl2 (3 x 100 mL). Combine the organic layers and dry with
Na2SO4, filter, concentrate and purify by flash column chromatography (silica gel, 0-5%
MeOH/CH2Cl2) to give 930 mg of 5-bromo-1,3-dihydro-bcnzo[c]thiophene 2,2-dioxide
(65%).
Dissolve 5-bromo-1,3-dihydro-benzo[c]miophene (860 mg, 3.50 mmol) and
hexamethylditin (3 eq.) in toluene and add tetrakis(triphenylphospbine)palladium(0)
(Pd(PPh3)4,0.1 eq.). Flush the flask with N2 and then heat the mixture to 120°C with
stirring. Continue to heat the mixture for 5 hours and then cool to room temperature.
Add water (50 mL) and extract aqueous layer with EtOAc (3 x 50 mL). Combine the
organic layers and dry with Na2SO4, filter, concentrate and purify by flash
chromatography (silica gel, 10-30% EtOAc/hexane) to give 1.22 g of the title compound
(100%).

Dissolve (2,2-dioxo-2,3-dihydro-1H-2λ6-benzo[c]thiophen-5-yl)-trimethyl-
stannane (1.19 g, 3.6 mmol, 2.7 eq.) and the compound of Preparation 1 (630 mg, 1.2
mmol) in CH3CN. Add Pd(OAc)2 (0.1 eq.), tricyclohexylphosphine (0.15 eq.), and CsF
(4 eq.). Flush the flask with N2 and then heat the reaction mixture to 90°C with stirring.
Continue to heat the reaction mixture for one hour and then cool to room temperature.
Add water (100 mL), separate, and extract the aqueous layer with CH2Cl2 (3 x 100 mL).
Combine the organic layers and dry with Na2SO4, filter, concentrate and purify by flash

column chromatography (silica gel, 0-5% MeOH-Nh4OH (10/1, v/v)/ CH2Cl2) to give
140 mg of the title compound (22%): mass spectrum (ion spray): m/z - 544.2 (M+H).
Example 25
6-(2,2-Dioxo-2,3-dihydro-1H-2λ6-benzo[c]thiophen-5-yl)-5-[4-(2-piperdin-1-yl-ethoxy)-
phenoxy]-naphthalen-2-ol Hydrochloride
Demethylate 1-(2-{4-[2-(2,2-dioxo-2,3-dihydro-1H-2λ6-ben2o[c]miophen-5-yl)-6-
methoxy-naphthalen-1-yloxy]-phenoxy}-ethyl)-piperidine (140 mg, 0.26 mmol) with
BBr3 and salify in a procedure similar to mat used in Example 23 to give 130 mg (94%)
of the title compound: mass spectrum (ion spray): m/z = 530.2 (M+H-HCl).
Preparation 8
(4-Methanesulfonyl-3-methoxy-phenyl)-trimethyl-stannane
Dissolve 6-hydroxy-1,3-benzoxathiol-2-one (16.8 g, 0.1 mol) in THF (1650 mL)
and cool to 0°C. Sequentially add benzyl alcohol (16.2 g, 0.15 mol), triphenylphosphine
(PPh3, 39.3 g, 0.15 mol), and diisopropylazodicarboxylate (30.3 g, 0.15 mol). Stir the
reaction mixture at room temperature overnight. Add water (1500 mL) and extract the
aqueous layer with EtOAc (3 x 1500 mL). Combine the organic layers and dry with
Na2SO4, filter, concentrate and purify by flash column chromatography (silica gel, 10-
25% of EtOAc/hexane) to give 24.33 g of 6-benzy]oxy-benzo[1,3]oxathiol-2-one (94%).
Dissolve 6-benzyloxy-benzo[1,3]oxathiol-2-one (24.33 g, 94.29 mmol) in dioxane
(1000 mL) and add a KOH solution (94.29 mL, 188 mmol, 2M in water) with stirring.
Flush the flask with N2 and then heat the reaction mixture to 80°C for 2 hours. Cool the
reaction mixture to room temperature and remove the solvent under reduced pressure.
Adjust the pH to EtOAc (3 x 500 mL). Combine the organic layers and dry with Na2SO4, filter and
concentrate to give 17.8 g of 5-benzyloxy-2-mercapto-pheno] (81.4%).
Dissolve 5-benzyloxy-2-mercapto-phenol (17.8 g, 76.72 mmol) in DMF (300 mL)
and add K2CO3 (31.8 g, 0.23 mol) and Mel (32.7 g, 0.23 mol). Stir the reaction mixture
at room temperature overnight Add water (800 mL) and extract the aqueous layer with

EtOAc (3.x 800 mL). Combine the organic layers and dry with Na2SO4, filter,
concentrate and purify by flash column chromatography (silica, 5-20% of EtOAc/hexane)
to give 13.5 g of 4-benzvloxy-2-metooxy-1-methyIsulfanyl-benzene (68%).
Dissolve 4-benzyloxy-2-methoxy-1-methylsulfanyl-benzaie (5.2 g, 20 mmol) in
CH2Cl2 (250 mL) and treat with m-CPBA (15.2 g, 60 mmol, 68%). Stir the reaction
mixture at room temperature for 6 hours. Add saturated K2CO3 (200 mL), and extract the
aqueous layer with EtOAc (3 x 200 mL). Combine the organic layers and dry with
Na2SO4, filter, concentrate and purify by flash column chromatography (silica gel, 20-
50% of EtOAc/hexane) to give 5.57 g of 4-benzyloxy-1-methanesulfonyl-2-methoxy-
benzene (96%).
Dissolve 4-benzyloxy-1-methanesulfonyl-2-methoxy-banzene (5.57 g, 19.09
mmol) in MeOH (200 mL), under N2, and add 5% Pd-C (900 mg). Evacuate the reaction
vessel and flush with hydrogen gas (3 times). Stir the reaction mixture at room
temperature for 3 hours, under 1 atmosphere of hydrogen gas. Filter, concentrate, and
purify the reaction mixture by flash column chromatography (silica gel, 30-60% of
EtOAc/hexane) to give 3.24 g of 4-meuianesulfonyi-3-methoxy-phenol (100%).
Dissolve 4-methanesulfonyl-3-methoxy-phenol (3.24 g, 19.04 inmol), 2,6-lutidine
(4.08 g, 38.08 mmol) and DMAP (230 mg, 1.9 mmol) in CH2C12 (190 mL). Cool the
solution to -78°C and then add trifluoromethanesulfonic acid anhydride (Tf2O, 6.44 g,
22.85 mmol), dropwise. Stir the reaction mixture for 6 hours. Add water (200 mL) and
extract the aqueous layer with EtOAc (3 x 200 mL). Combine the organic layers and dry
with Na2SO4, filter, concentrate and purify by flash column chromatography (silica gel,
10-30% of EtOAc/hexane) to give 4.6 g of trifluoro-methanesulfonic acid 4-
methanesulfonyl-3-methoxy-phenyl ester (72%).
Dissolve trifluoro-methanesulfonic acid 4-methanesulfonyl-3-methoxy-phenyl
ester (3 g, 9 mmol) in toluene (180 mL) and add hexamethylditin (14.7 g, 44.9 mmol) and
Pd(PPh3)4 (1.04 g, 0.9 mmol). Heat the reaction mixture to 120°C with stirring for 4
hours and then cool to room temperature. Add water (250 mL) and extract the aqueous
layer with EtOAc (3 x 250 mL). Combine the organic layers and dry with Na2SO4, filter,
concentrate and purify by flash column chromatography (silica gel, 5-40% of EtOAc in
hexane) to give 1.9 g of the title compound (61%).


Add (4-methanesulfonyl-3-methoxy-phenyl)-trimethyl-stannane (300 mg,.0.86
mmol, 1.5 eq.) and the compound of Preparation 1 (300 mg, 0.57 mmol) to a suspension
of cesium fluoride (2.9 eq.) in acetonitrile (40 mL). Combine palladium (II) acetate (0.2
eq.) and tricyclohexylphosphine (0.3 eq.) in acetonitrile (15 mL) and sonicate for 10
minutes before adding to the above mixture. Heat the reaction mixture to 90°C for 18
hours. Concentrate in vacuo and partition residue between ethyl acetate (50 mL) and
saturated aqueous NaHCO3 (50 mL). Wash the organic layer with saturated aqueous
NH4Cl (50 mL) and brine (50 mL). Dry with Na2SO4, filter, and concentrate in vacuo.
Chromatograph the residue on a SiO2 column eluting with methanol in dichloromethane
to give 180 mg of the title compound (56%): mass spectrum (ion spray): m/z = 562.4
(M+H).
Example 27
6-(3-Hydroxy-4-methanesulfonyl-phenyl)-5-[4-(2-piperidin-1 -yl-ethoxy)-phenoxy]-
naphthalen-2-ol Trifluoroacetate
Demethylate 1-(2-{4-[2-(4-methanesulfonyl-3-methoxy-phenyl)-6-methoxy-
naphthalen-1-yloxy]-phenoxy}-ethyl)-piperidine (240 mg, 0.43 mmol) with BBr3 in a
procedure similar to that used in Example 23 to give 220 mg of crude product as a white
solid (95%). Purify the impure product by preparative HPLC (Gilson) to give 120 mg of
the title compound (46%): mass spectrum (ion spray): m/z = 534.3 (M+H-TFA).

Preparation 9
4-Bromo-2-chloro-l -methanesulfonyl-benzene
Combine 2-chloromediyl-benzenethiol (10 mL, 88 mmol), potassium carbonate
(25 g, 180 mmol), iodomemane (11 mL, 177 mmol) and DMF (100 mL). Stir for 12
hours. Filter the suspension through a pad of silica gel and elute with ethyl acetate (500
mL). Evaporate half of the solvent and wash the remaining solution with 10% aqueous
LiCl (100 mL). Dry with MgSO4 and evaporate the solvent. Chromatograph the residue
on a SiO2 column during with hexane to give 13 g of 1-chloro-2-methylsulfanyl-benzene
(93%).
Combine l-methylsulfunyl-2-chloromethyl-benzene (3.7 g, 23 mmol), iron (130
mg, 2.3 mmol), bromine (1.2 mL, 238 mmol), and dichloromethane (150 mL). Stir for 2
hours. Add water (10 mL), aqueous saturated sodium thiosulfate (100 mL) and ethyl
acetate (100 mL). Separate the organic layer and wash with brine, dry with MgSO4, filter
and concentrate in vacuo. Chromatograph the residue on a SiO2 column eluting with
hexane to give 4.8 g of 4-bromo-2-chloro-1-methylsulfenyl-benzene (87%).
Dissolve 4-bromo-2-chloro-1-methylsulfanyl-benzene (4.8 g, 20 mmol) and
mCPBA (20 g, 80 mmol) in dichloromethane (100 mL). Stir for 2 hours. Dilute with
dichloromethane (300 mL) and water (100 mL). Separate the organic layer and wash with
aqueous saturated NaHCO3 (2x 100 mL) and brine (100 mL). Dry with MgSO4, filter and
concentrate in vacuo. Wash the solid with ether (2 x 10 mL) and dichloromethane (10
mL) to give 1.7 g of the title compound (31%).


Combine palladium (II) acetate (32 mg, 0.14 nunol), tricyclohexylphosphine (67
mg, 0.24 mmol), cesium fluoride (1.3 g, 8.6 mmol) and acetonitrile (20 mL). Stir for 5
minutes and add the compound of Preparation 1 (500 mg, 0.95 mmol) and
bisfreopentylglycolato^iiboron (322 mg, 1.42 mmol). Heat to 90°C and add 4-bromo-2-
chloro-1-methanesulfonyl-benzene in acetonitrile (2 mL). Stir at 90°C for 10 minutes.
Cool to room temperature and dilute the solution with ethyl acetate (20 mL) and wash
with saturated aqueous NaHCO3 (10 mL). Separate the layers, wash the organic layer
with brine (10 mL), dry with MgSCu, filter, and concentrate in vacuo. Chromatograph the
residue on a SiO2 column eluting with methanol in dichloromethane (0 to 5%) to give 180
mg of the title compound (33%): mass spectrum (ion spray): m/z = 566.2 (M+H).
Example 29
6-(3-Chloro-4-methanesulfonyl-phenyl)-5-[4-(2-piperidin-1-yl-ethoxy)-phenoxy]-
naphthalen-2-ol
Dissolve the product of Example 28 in ethyl acetate (10 mL) and diethyl ether (5
mL). Add 2M HCl in diethyl ether (0.6 mL, 1.2 mmol). Concentrate the slurry and dry in
vacuo. Dilute the residue in dichloromethane (5.0 mL) and blanket with nitrogen. Cool
the solution to 0°C with external ice bath. Add BBr3 (0.1 mL, 1.1 mmol). After 1 hour,
add water (1.0 mL) and dichloromethane (10 mL). Separate the layers, wash the organic
layer with saturated aqueous NaHCO3 (10 mL), brine (10 mL), dry with MgSO4, filter,
and concentrate in vacuo. Chromatograph the residue on a SiO2 column eluting with a
step gradient of methanol/dichloromethane (0 to 5%) to give 120 mg of the title
compound (68%): mass spectrum (ion spray): m/z= 552.2 (M+H).
Example 30
6-(3-Chloro-4-methanesulfonyl-phenyl)-5-[4-(2-piperidin-1-yl-ethoxy)-phenoxy]-
naphthalen-2-ol Hydrochloride
Dissolve the product of Example 29 in diethyl ether (5.0 mL), ethyl acetate (6.0
mL) and methanol (1.0 mL) and add 2M HCl in diethyl ether (0.6 mL, 1.2 mmol). Collect
the precipitate on filter paper, rinse with diethyl ether and dry in vacuo (
20°C for 4 hours to give 16 mg of the title compound (26%): mass spectrum (ion spray):
m/z= 552.3 (M+H-HCl).
Preparation 10
4-Bromo-1-methanesulfonyl-2-trifluoromethyl-benzene
Dissolve 2-trifluoromethyl-benzenethiol (10 g, 56 mmol), potassium oarbonate (25
g, 180 mmol), iodomethane (11 mL, 177 mmol) in DMF (100 mL). Stir for 12 hours.
Filter the suspension through a pad of silica gel and elute with ethyl acetate (500 mL).
Evaporate half of the solvent and wash the remaining solution with 10% aqueous LiCl
(100 mL). Dry with MgSO4 and evaporate solvent. Chromatograph the residue on a
SiO2 column eluting with hexane to give 9.5 g of 1-methylsulfanyl-2-trifluoromethyl-
benzene (88%).
Combine 1-methylsulfanyl-2-trifluoromethyl-benzene (3.5 g, 18 mmol), iron (1-00
mg, 1.79 mmol), bromine (0.95 mL, 18 mmol), aluminum chloride (242 mg, 1.8 mmol)
and dichloromethane (50 mL) and stir for 2 hours. Add water (10 mL), aqueous saturated
sodium thiosulfate (100 mL) and ethyl acetate (100 mL). Separate the organic layer and
wash with brine, dry with MgSO4, filter and concentrate in vacuo. Chromatograph the
residue on a SiO2 column eluting with hexane to give 3.6 g of 4-bromo-1-methylsulfanyl-
2-trifluoromethyl-benzene (83%).
Combine 4-bromo-1-methylsulfanyl-2-trifluoromethy]-benzene (3.6 g, 15 mmol),
mCPBA (7.7 g, 30 mmol) and dichloromethane (100 mL). Stir for 2 hours. Dilute with
dichloromethane (300 mL) and water (100 mL). Separate the organic layer and wash with
aqueous saturated NaHCO3 (2x 100 mL) and brine (100 mL). Dry with MgSO4, filter and
concentrate in vacuo. Wash the solid with diethyl ether (2 x 10 mL) and dichloromethane
(10 mL) to give 2.06 g of the title compound (44%).
Example 31
1-(2- {4-[2-(4-Methanesulfonyl-3-trifluoromethyl-phenyl)-1-(4-methoxy-phenyl)-
propenyloxy]-phenoxy} -ethyl)-piperidine


Combine palladium (II) acetate (6 mg, 0.029 mmol), tricyclohexylphosphine (13
mg, 0.047 mmol), cesium fluoride (258 mg, 1.7 mmol,) and acetonitrile (10 mL). Stir for
5 minutes. Add the compound of Preparation 1 (92 mg, 0.18 mmol) and
bis(neopentylglycolato)diboron (64 mg, 0.89 mmol) and heat to 90°C. Add 4-b0romo-1-
methanesulfonyi-2-trifluoromethyl-benzene in acetonitrile (1 mL) and stir at 90°C for 10
minutes. Cool to room temperature and dilute the solution with ethyl acetate (20 mL) and
wash with saturated aqueous NaHCO3 (10 mL). Separate the layers, wash the organic
layer with brine (10 mL), dry with MgSO4, filter, and concentrate in vacuo.
Chromatograph the residue on a SiO2 column eluting with methanol in dichloromethane
(0 to 5%) to give 62 mg of the title compound (54%): mass spectrum (ion spray): m/z =
600.3 (M+H).
Example 32
6-(4-Methanesulfonyl-3-trifluoromethyl-phenyl)-5-[4-(2-piperidin-1-yl-€thoxy)-phenoxy]-
naphthalen-2-ol Hydrochloride
Dissolve the product of Example 31 in ethyl acetate (10 mL) and diethyl ether (5
mL). Add 2M HCl in diethyl ether (0.1 mL, 0.2 mmol). Concentrate the slurry and dry in
vacuo. Dilute the residue in dichloromethane (5.0 mL) and blanket with nitrogen. Cool
the solution to 0°C with external ice bath. Add BBr3 (0.1 mL, 1.1 mmol) and stir for 1
hour. Dilute with water (1.0 mL) and dichloromethane (10 mL). Separate the layers and
wash the organic layer with saturated aqueous NaHCO3 (10 mL) and brine (10 mL). Dry
with MgSO4, filter, and concentrate in vacuo. Chromatograph the residue on a SiO2
column eluting the 6-(4-methanesulfonyl-3-trifluoromethyl-phenyl)-5-[4-(2-piperidin-1-
yl-ethoxy)-phenoxy]-naphthalen-2-ol with a step gradient of methanol/dichloromethane (0
to 5%). Dissolve the free base in diethyl ether (5.0 mL), ethyl acetate (6.0 mL) and

methanol (1.0 mL) and add 2M HGl in diethyl ether (0.1 mL, 0.2 mmol). Collect the
precipitate on filter paper, rinse with diethyl ether and dry in vacuo ( for 48 hours to give 34 mg of the title compound (53%).
Preparation 11
1-Bromo-2,3-dichloro-4-methanesulfonyl-benzene
Combine 4-bromo-2-chloro-1-methylsulfanyl-benzene (1.9 g, 20 mmol) and
mCPBA (5.0 g, 80 mmol) in dichloromethane (30 mL). Stir for 2 hours. Dilute with
dichloromethane (20 mL) and water (20 mL). Separate the organic layer and wash with
aqueous saturated NaHCCb (2x 100 mL) and brine (100 mL). Dry with MgSO4, filter and
concentrate in vacuo. Wash the solid with diethyl ether (2x 10 mL) and dichloromethane
(10 mL) to give 890 mg of the title compound (52%).

Combine palladium (II) acetate (32 mg, 0.14 mmol), tricyclohexyiphosphine (67
mg, 0.24 mmol), cesium fluoride (1.3 g, 8.6 mmol,) and acetonitrile (20 mL). Stir for 5
minutes. Add the compound of Preparation 1 (500 mg, 0.95 mmol) and
bis(neopentylglycolato)diboron (322 mg, 1.42 mmol). Heat to 90°C and add 1-bromo-
2,3-dichloro-4-methanesulfonyl-benzene in acetonitrile (2 mL). Stir at 90°C for 10
minutes. Cool to room temperature and dilute the solution with ethyl acetate (20mL) and
wash with saturated aqueous NaHCO3 (10 mL). Separate the layers, wash the organic
layer with brine (10 mL), dry with MgSO4, filter, and concentrate in vacuo.
Chromatograph the residue on a column eluting with methanol in dichloromethane (0 to
5%) to give 180 mg of the title compound (33%): mass spectrum (ion spray): m/z = 566 2

Example 34
6-(2,3-Dichloro-4-methanesulfonyl-phenyl)-5-[4-(2-piperidin-1-yl-ethoxy)-phenoxy]-
naphthalen-2-ol Hydrochloride
Dissolve the product of Example 33 in ethyl acetate (10 mL) and diethyl ether (5.
mL). Add 2M HCl in diethyl ether (0.5 mL, 1.0 mmol). Concentrate the slurry and dry in
vacuo. Dilute the residue in dichloromethane (5.0 mL) and blanket with nitrogen. Cool
the solution to 0°C with external ice bam. Add BBr3 (0.1 mL, 1.1 mmol) and stir for 1
hour. Quench with water (1.0 mL) and and dilute with dichloromethane (10 mL).
Separate the layers, wash the organic layer with saturated aqueous NaHCO3 (10 mL) and
brine (10 mL). Dry with MgSO4, filter, and concentrate in vacuo. Chromatograph the
residue on a SiO2 column eluting the 6-(2,3-dichloro-4-methanesulfonyl-phenyl)-5-[4-(2-
piperidin-1-yl-ethoxy)-phenoxy]-naphthalen-2-ol with a step gradient of
methanol/dichloromethane (0 to 5%). Dissolve the free base in diethyl ether (5.0 mL),
ethyl acetate (6.0 mL) and methanol (1.0 mL) and add 2M HCl in diethyl ether (0.5 mL,
1.0 mmol). Collect the precipitate on filter paper, rinse with diethyl ether to give 38 mg
of the title compound (30%): mass spectrum (ion spray): m/z= 586.2.
Preparation 12 .
4-Bromo-1,2-bis-methanesulfonyl-benzene
Combine 4-bromo-2-fluoro-1-methylsulfanyl-benzene (4.8 g, 22 mmol) and
sodium methanethiolate (1.6 g, 22 mmol) in DMF (50 mL). Stir for 48 hours. Pour the
reaction mixture into ice (10 g). Separate the layers and wash the organic layer with
aqueous saturated NaHCO3 and brine. Dry with MgSO4, filter and concentrate in vacuo.
Chromatograph the residue on a column eluting with diethyl ether in hexane (0 to 5%) to
give 4.82 g of 4-bromo-1,2-bis-methylsulfanylbenzene (89%).
Combine 4-bromo-1,2-bis-methylsulfanylbenzene (1.4 g, 5.5 mmol) and mCPBA
(8.6 g, 34 mmol) in dichloromethane (100 mL). Stir for 2 hours. Add dichloromethane
(300 mL) and water (100 mL). Separate the organic layer and wash with aqueous
saturated NaHCO3 (2 x 100 mL) and brine (100 mL). Dry with MgSO4, filter and

concentrate in vacuo. Wash the solid with ether (2x10 mL) and dichloromethane (10
mL) to give 800 mg of 4-bromo-1,2-bis-metbanesulfony]benzene (46%).

Combine palladium (II) acetate (13 mg, 0.058 mmol), tricyclohexylphosphine (27
mg, 0.096 mmol), cesium fluoride (518 mg, 3.4 mmol,) and acetonitrile (20 mL). Stir for
5 minutes and add the compound of Preparation 1 (200 mg, 0.38 mmol) and
bis(neopentylglycolato)diboron (130 mg, 0.58 mmol). Heat to 90°C, add 4-bromo-1,2-
bis-methanesulfonyl-benzene in acetonitrile (2 mL), and stir for 10 minutes. Cool to
room temperature and dilute the solution with ethyl acetate (20mL) and wash with
saturated aqueous NaHCO3 (10 mL). Separate the layers, wash the organic layer with
brine (10 mL), dry with MgSO4, filter, and concentrate in vacuo. Chromatograph the
residue on a column eluting with methanol in dichloromethane (0 to 5%) to give 130 mg
of the title compound (56%).
Example 36
6-(3,4-Bis-methanesulfonyl-phenyl)-5-[4-(2-piperidin-]-yl-ethoxy)-phenoxy]-naphthalen-
2-ol Hydrochloride
Dissolve the product of Example 35 in ethyl acetate (10 mL) and diethyl ether (5
mL). Add 2M HCl in diethyl ether (0.1 mL, 0.2 mmol). Concentrate the slurry and dry in
vacuo. Dilute the residue in dichloromethane (5.0mL) and blanket with nitrogen. Cool
the solution to 0ºC with an external ice bath. Add BBr3 (0.1 mL, 1.1 mmol) and stir for 1
hour. Quench with water (1.0 mL) and dilute with dichloromethane (10 mL). Separate

the layers, wash the organic layer with saturated aqueous NaHCO3 (10 mL) and brine (10
mL). Dry with MgSO4, filter, and concentrate in vacuo. Chromatograph the residue on a
column elutingthe 6-(3,4-bis-methanesulfonyl-phenyl)-5-[4-(2-piperidin-1-yl-ethoxy)-
phenoxy]-naphthaIen-2-ol with a step gradient of methanol/dichloromethane (0 to 5%).
Dissolve the free base in diethyl ether (5.0 mL), ethyl acetate (6.0 mL) and methanol (1.0
mL) and add 2M HCl in diethyl ether (0.1 mL, 0.2 mmol). Collect the precipitate on filter
paper, rinse with diethyl ether and dry in vacuo ( give 61 mg of the title compound (45%): mass spectrum (ion spray): m/z: 594.9 (M+H-
HCl).
Preparation 13
1-Bromo-4-(2,2,2-trifluoro-ethanesulfonyl)-benzene
Dissolve 4-bromo-benzenethiol (1.0 g, 5.3 mmol) in dry dimethylfonnamide (50
mL) and cool to 0°C under nitrogen. Add dry sodium hydride (152 mg, 6.4 mmol),
portionwise. After the vigorous gas evolution stops, add toruene-4-sulfonic acid 2,2,2-
trifluoro-ethyl ester (2.0 g, 8.0 mmol) and stir the reaction overnight at room temperature.
Slowly pour the reaction into water (400 mL) and extract with ethyl acetate (2x150 mL).
Wash the combined organic layers with water (100 mL) and brine (100 mL). Dry the
organic layer with sodium sulfate, filter and concentrate in vacuo. Chromatograph the
resultant residue on a SiO2 column with hexanes to yield 640 mg of 1 -bromo-4-(2,2,2-
trifluoro-ethylsulfanyl)-benzene (45%).
Dissolve l-bromo-4-(2,2-trifluoro-ethylsulfanyl)-benzene (640 mg, 2.4 mmol) in
dichloromethane (25 mL) and cool to 0°C. Add mCPBA (1.8g, 7.1 mmol, 68%) in
portions and stir the reaction for 2 hours at room temperature. Filter the white precipitate
and wash the filtrate with IN aqueous NaOH. Dry the organic layer with sodium sulfate,
filter and concentrate in vacuo to yield 700 mg of the title compound (98%).


Charge a flame-dried flask with palladium (H) acetate (6.4 mg, 0.029 mmol),
tricyclohexylphosphine (13.3 mg, 0.048 mmol) and cesium fluoride (260 mg, 1.71 mmol).
Add dry acetonitrile (2 mL) and stir under nitrogen. Add the compound of Preparation 1
(100 mg, 0.19 mmol) followed by bis(neopentylgylcolato)diboron (64 mg, 0.29 mmol).
Plunge the reaction into an S0°C oil bath. Once the reaction turns black (~3 to 5 minutes)
immediately add l-bromo-4-(2,2,2-trifluoro-ethanesulfonyl)-benzene (116 mg, 0.38
mmol) and continue heating. After 45 minutes, cool the reaction to room temperature and
filter through celite. Concentrate the filtrate in vacuo and purify on a SiO2 column with
methanol in dichloromethane (0 to 3%) to yield 26 mg of the title compound (23%):
LRMS (ESI, positive ion) m/z= 600.5 (M+H).
Example 38
5-[4-(2-Piperidin-1-yl-ethoxy)-phenoxy]-6-[4-(2,2,2-trifluoro-ethanesulfonyl)-phenyl]-
naphthalen-2-ol
Dissolve the compound of Example 37 (26 mg, 0.043 mmol) in dichloromethane
(1 mL) and add 2M.HC1 in diethyl ether (43 pL, 0.0S6 mmol). Remove the solvents in
vacuo and place on a high vacuum pump for 10 minutes. Dissolve the resultant foam in
dry dichloromethane (1 mL) and cool to 0°C. Add BBr3 (20 μL, 0.22 mmol) dropwise and
stir at 0°C for 1 hour. Pour the reaction into cold saturated aqueous sodium bicarbonate
(5 mL) and extract with dichloromethane (2x5 mL). Dry the combined organic phases
with sodium sulfate, filter, and concentrate in vacuo. Purify the resultant oil on a SiO2

column with methanol in dichloromethane (0 to 8%) to yield 16 mg of the title compound
(64%): mass spectrum (ion spray) m/z = 586.4 (M+H).
Example 39
5-[4-(2-Piperidin-1-yl-ethoxy)-phenoxy]-6-[4-(2,2,2-trifluro-ethanesulfonyl)-phenyl]-
naphthalen-2-ol Hydrochloride
Dissolve the compound of Example 38 (30 mg, 0.051 mmol) in dry
dichloromethane (1 mL) and add 2M HCl in diethyl ether (0.10 mL, 0.20 mmol). Stir at
room temperature for 1 minute. Remove the solvent by blowing nitrogen over the liquid.
Place the residue on a high vacuum pump for 1 hour. Dry the product in a vacuum oven
at 45°C overnight to yield 30 mg of the title compound (97%): mass spectrum (ion spray)
m/z = 586.3 (M+H-HCl).
Preparation 14
2-(4-Isopropylsulfanyl-phenyl)-boronic acid
Dissolve 4-bromo-benzenethiol (1.0 g, 5.3 mmol) in dry dimethylfonnamide (50
mL) and cool to 0°C under nitrogen. Add dry sodium hydride (153 mg, 6.4 mmol) in
portions. After the vigorous gas evolution stops, add 2-bromo-propane (0.60 mL, 6.4
mmol) and stir the reaction overnight at room temperature. Slowly pour the reaction into
water (300 mL) and extract with ethyl acetate (2x150 mL). Wash the combined organic
layers with water (100 mL) and brine (100 mL). Dry the organic layer with sodium
sulfate, filter and concentrate in vacuo. Chromatograph the resultant residue on a SiC>2
column with 5% ethyl acetate in hexanes to yield 1.lg of 1-bromo-4-isopropylsulfanyl-
benzene (92%).
.Dissolve 1-bromo-4-isopropylsulfanyl-benzene (2.5 g, 10.8 mmol) in dry
tetrahydroruran (100 mL) and cool the solution to -78°C. Add 2.5 M n-butyllithium in
hexanes (5.2 mL, 12.9 mmol) dropwise and allow the reaction to warm to -40°C and stir
for 30 minutes. Cool the reaction to -78°C and add triisopropyl borate (7.4 mL, 32.4
mmol) and allow the reaction to slowly warm to room temperature. Add 10% aqueous
potassium hydroxide (96 mL, 172 mmol) and stir overnight. Slowly pour the reaction

into a mixture of concentrated HCl and ice. Extract the aqueous solution with
dichloromethane, dry with sodium sulfate and concentrate in vacuo to yield 1.9 g of the
title compound (90%).

Combine 2-(4-isopropylsulfanyl-phenyI>boronic acid (223 mg, 1.14 mmol), the
compound of Preparation 1 (300 mg, 0.57 mmol) and cesium fluoride (433 mg, 2.85
mmol) in a flame-dried flask fitted with a reflux condenser and purge with nitrogen. In a
separate dried flask combine palladium (II) acetate (13 mg, 0.06 mmol) and
tricyclohexylphosphine (24 mg, 0.09 mmol). Add dry acetonitrilc (5 mL) and sonicate for
10 minutes under nitrogen. Add the catalyst slurry to the solids and plunge the flask into
a 90°C oil bath. After 20 minutes cool the black suspension to room temperature and
filter through celite, rinsing with dichloromethane. Concentrate the filtrate in vacuo.
Chiromatograph the resultant residue on a SiO2 column with 3% methanol in
dichloromethane with 0.2% ammonium hydroxide to give 300 mg of the title compound
(95%): mass spectrum (ion spray) m/z = 528.3 (M+H).
Example 41
6-(4-Isopropylsulfanyl-phenyl)-5-[4-(2-piperidin-1-yl-ethoxy)-phenoxy]-naphthalen-2-ol
Dissolve the compound of Example 43 (300 mg, 0.57 mmol) in dichloromethane
(3 mL). Add 2M HCI in diethyl ether (0.51 mL, 1.14 mmol) and stir for 1 minute.
Remove the solvent in vacuo and place on a high vacuum pump for 20 minutes. Dissolve
the foam in dry dichloromethane (6 mL) and cool to 0°C. Add BBr3 (0.21 mL, 2.3

mraol), dropwise. Stir for 45 minutes and quench by adding methanol (1 mL). Slowly
pour the reaction mixture into saturated aqueous sodium bicarbonate (10 mL) and extract
with dichloromethane (2x10 mL). Dry the combined organic layers with sodium sulfate
and concentrate in vacuo. Chromatograph the residue on a SiO2 column with 5%
methanol in dichloromethane with 0.2% ammonium hydroxide to yleld 236 mg of the title
compound (81%): mass spectrum (ion spray) m/z = 514.3 (M+H).
Example 42
5-[4-(2-Piperidin-l -yl-ethoxy)-phenoxy]-6-[4-(propane-2-sulfonyl)-phenyl]-naphthalen-2-
ol
Dissolve the compound of Example 41 (236 mg, 0.46 mmol) in glacial acetic acid
(5 mL) and add sodium perborate (92 mg, 0.92 mmol). Stir the reaction overnight and
pour the mixture into saturated aqueous sodium bisulfite (20 mL). Extract with
dichloromethane (2x20 mL) and wash the combined organic layers with saturated
aqueous sodium bicarbonate (10 mL). Dry the organic layer with sodium sulfate, filter
and concentrate in vacuo. Chromatograph the residue on a SiO2 column with 4%
methanol in dichloromethane with 0.2% ammonium hydroxide to yleld 197 mg of the title
compound (79%): mass spectrum (ion spray) m/z=546.3 (M+H).
Example 43
5-[4-(2-Piperidin-1 -yl-ethoxy)-phenoxy]-6-[4-(propane-2-sulfonyl)-phenyl]-naphthalen-2-
ol Hydrochloride
Dissolve the compound of Example 42 (123 mg, 0.36 mmol) in dry
dichloromethane (0.5 mL). Dilute the solution with diethyl ether (4 mL) and add 2M HCl
in diethyl ether (0.36 mL, 0.72 mmol). Stir at room temperature for 10 minutes. Filter
the white precipitate through paper and dry the solids in a vacuum oven at 50°C overnight
to yleld 102 mg of the title compound (78%): mass spectrum (ion spray) m/z=546.3
(M+H-HCl).

Preparation 15
2-Methyl-4-meth)dthiophcnylboronic acid
Add lM 3-metoyl-phenylinagnesium bromide is THF (25 mL, 25 mmol) to -30°C
diethyl ether (50 mL). Add dimethyl disulfide (1 .S mL, 20 mmol) to the reaction over 3
minutes allowing the reaction to warm to room temperature. Dilute the reaction in H2O.
(75 mL) and diethyl ether (50 mL). Separate and extract the cloudy aqueous layer with
.diethyl ether (25 mL). Combine the organic layers and wash with H2O (25 mL). Dry the
organic layer with Na2SO4 (30 g), filter over Celite 501 (10 g) and concentrate in vacuo to
give 3.0 g of crude material. Combine with another batch of crude title compound that
ylelded 6.0 g crude. Chromatograph the entire 9.0 g crude on a SiO2 column in hexanes
to give 7.2 g (70%) of 1-memyl-3-methylsulfanyl-benzene.
Combine iron (25 mg, 0.45 mmol) and l-methyl-3-methylsulfanyl-benzene.(204
mg, 1.47 mmol) in dichloromethane (DCM, 2 mL). Cool, the slurry to 3°C and add Br2
(74pL, 1.44 mmol) over 5 minutes. Stir at 3°C for 10 minutes and remove the external
cooling bath. Stir at room temperature for 4 hours, then quench with 10% aqueous
Na2S2O3 solution. Dilute the reaction with dichloromethane (10 mL) and separate. Wash
the organic layer with brine, concentrate and chromatograph with dichloromethane in
hexanes (0 to 5%) to give 125 mg of l-bromo-2-methyl-4-methylsulfanyl-benzene (53%).
Add l-bromo-2-methyl-4-methylsulfanyl-benzene (608 mg, 2.80 mmol) to diethyl
ether (60 mL) and cool to -78°C under a nitrogen blanket. Add t-BuLi (3.4 mL, 5.78
mmol) over a 15 minute period, stir for 2 minutes, add trimetnyl borate ((MeO)3B, 340
ΜL, 2.99 mmol) over 2 minutes, stir for 15 minutes at -78°C and then let warm to room
temperature. Quench the reaction with saturated aqueous NH4Cl (7 mL), stir for 15
minutes, add 1M aqueous HCl (6 mL), stir for another 2 minutes and separate. Dry with
Na2SO4, filter (wash the drylng agent with ethyl acetate (3 x 20 mL)), and concentrate.
Chromatograph the crude material on a SiO2 column with 20% ethyl acetate in hexanes to
5 % methanol in ethyl acetate to give 267 mg of the title compound (52%).
Example 44
1-(2-{4-[6-Methoxy-2-(2-methyl-4-methylsulfanyl-phenyl)-naphthalen-1-yloxy]-
phenoxy}-ethyl)-piperidine Hydrochloride


Add the compound of Preparation 1 (300 mg, 0.57 mmol), 2-methyl-4-
methylthiophenylboronic acid (267 mg, 1.47 mmol) and cesium fluoride (672 mg, 4.42
mmol) into acetonitrile (3.0 mL) in a flame-dried flask fitted with a reflux condenser. In a
separate dried flask combine palladium (II) acetate (14.5 mg, 0.06 mmol) and
tricyclohexylphosphine (27.5 mg, 0.10 mmol). Add dry acetonitrile (2.5 mL) and sonicate
for 10 minutes under nitrogen. Add the catalyst suspension to the reaction slurry and
plunge the flask into a 90°C oil bath. After 40 minutes, cool the black suspension to room
temperature, filter and wash the solids with acetonitrile (3x10 mL). Concentrate the
filtrate in vacuo. Partition the residue between ethyl acetate (25 mL) and 5% aqueous
sodium carbonate (10 mL). Separate the layers and wash the organic layer with saturated
aqueous NH4Cl (10 mL) and brine (10 mL). Concentrate the organic layer in vacuo and
chromatograph the residue on a SiO2 column with methanol in dichloromethane (0 to
2.5%) to give 331 mg of l-(2-{4-[6-methoxy-2-(2-methyl-4-methylsulfanyl-phenyl)-
naphthalen-1-yloxy]-phenoxy}-ethyl)-piperidine (94%). Dissolve the free base material
in ethyl acetate (10 mL), add 2M HCl in diethyl ether (350 μL) and concentrate in vacuo
to give the title compound: mass spectrum (ion spray) m/z = 514.3 (M+H).
Example 45
6-(2-Methyl-4-methylsulfanyl-phenyl)-5-[4-(2-piperidin-1-yl-ethoxy)-phenoxy]-
naphthalen-2-ol
Dissolve 1 -(2- {4-[6-memoxy-2-(2-methyl-4-methylsulfanyl-phenyl)-naphthalen-1 -
yloxy]-phenoxy}-ethyl)-piperidine hydrochloride (331 mg, 0.603 mmol) in
dichloromethane (15 mL) and cool to 5°C. Add BBr3 (285 μL, 3.02 mmol) to the light
suspension over 5 minutes. Quench the reaction after 1 hour with saturated aqueous

NaHCO3 (15 mL). Separate the layers and extract the aqueous layer with
dichlorometbane (2x10 mL). Pour the solution onto a SiO2 plug (20 g) and elute with
methanol in dichloromethane (5 to 15%). Concentrate the fractions in vacuo to give 301
mg of the title compound (100%): mass spectrum (ion spray) m/z = 500.3 (M+H).
6-(4-Memanesulfonyl-2-methyl-phenyl)-5-[4-(2-piperidin-1 -yl-ethoxy)-phenoxy}-
naphthalen-2-ol Trifluoroacetate
Dissolve the compound of Example 45 (301 mg, 0.060 mmol) in glacial acetic
acid (5 mL) and add NaBO3•H2O (120 mg, 1.20 mmol). Concentrate the reaction after 14
hours and partition between 10% aqueous NaHSO3 (30 mL), MeOH (3 mL) and
dichloromethane (50 mL). Separate the layers and extract the aqueous layer with
dichloromethane (10 mL). Combine the organic layers and wash with saturated aqueous
NaHCO3 (10 mL) and H2O (10 mL). Dry with Na2SO4, filter, and concentrate in vacuo.
Chromatograph on a SiO2 column with methanol in dichloromethane (0 to 10%) to obtain
impure product. This crude material is purified by preparative HPLC to give 91 mg of the
title compound (23%): mass spectrum (ion spray) m/z = 532.3 (M+H-TFA).

Combine palladium (II) acetate (21 mg, 0.094 mmol), tricyclohexylphosphine (53
mg, 0.19 mmol), the compound of Preparation 1 (500 mg, 0.95 mmol), cesium fluoride
(1.00g, 6.62 mmol,) 3-methyl-4-(methythio)benzene boronic acid (US Patent No.
6,307,047; 520 mg, 2.86 mmol) and acetonitrile (40 mL). Heat to 90°C for 1 hour. Cool
to room temperature and dilute the solution with ethyl acetate (20 mL) and wash with

saturated aqueous NaHCO3 (10 mL). Separate the layers, wash the organic layer with
brine (10 mL), dry with MgSO4, filter, and concentrate in vacuo. Chromatograph the
residue on a SiO2 column eluting the material with methanol in dichloromethane (2 to
4%) to give 371 mg of the title compound (75%): mass spectrum (ion spray): m/z - 514.3
(M+H).
Example 48
6-(3-Methyl-4-methylsulfanyl-phenyI)-5-[4-(2-pipendin-1 -yl-ethoxy)-phenoxy]-
naphthalen-2-ol
Dissolve the product of Example 47 in ethyl acetate (10 mL) and diethyl ether (5
mL). Add 2M HCl in diethyl ether (5 mL, 10.0 mxnol). Concentrate the slurry and dry in
vacuo. Dilute the residue in dichloromethane (5.0 mL) and blanket with nitrogen. Cool
the solution to 0°C with external ice bath and add BBr3 (0.3 mL, 3.2 mmol). After 1 hour,
add water (1.0 mL) and ethyl acetate (10 mL). Separate the layers, wash the organic layer
with saturated aqueous NaHCO3 (10 mL) and brine (10 mL). Dry with MgSO4, filter, and
concentrate in vacuo. Chromatograph the residue on a column eluting the material with a
step gradient of methanol in dichloromethane (0 to 0.5%) to give 330 mg of the title
compound (92%): mass spectrum (ion spray): m/z = 500.3(M+H).
Example 49
6-(4-Methanesulfonyl-3-memyl-phenyl)-5-[4-(2-piperidin-1-yl-ethoxy)-phenoxy]-
naphthalen-2-ol Hydrochloride
Combine the compound of Example 48 and sodium perborate (162 mg, 1.62
mmol) in acetic acid (4 mL). After 2 days, add dichloromethane (20 mL) and water (5
mL). Separate the layers, wash the organic layer with saturated aqueous NaHCO3 (10
mL), brine (10 mL), dry with MgSO4, filter, and concentrate in vacuo. Chromatograph
the residue on a SiO2 column eluting the 6-(4-methanesulfonyl-3-methyl-phenyl)-5-[4-(2-
piperidin-1-yl-ethoxy)-phenoxyJ-naphthalen-2-ol with a step gradient of methanol in
dichloromethane (0 to 5%). Dissolve the free base in diethyl ether (5.0 mL), ethyl acetate
(6.0 mL) and methanol (1.0 mL) and add 2M HCl in diethyl ether (1 mL, 2.0 mmol).

Collect the precipitate an filter paper, rinse with diethyl ether and dry in vacuo ( Hg) at 65°C for 48 hours to give 40 mg of the title compound (11%): mass spectrum (ion
spray): m/z - 537.0 (M+H-HCl).
Preparation 16
2-Benzo[b]thiophen-5-yl-4,4,5,5-tetramethyl-[l ,3,2] dioxaborolane
Dissolve 5-bromo-benzo[b]thiophene (J. Mater. Chem., 10:2069-2081,2000; 49
g, 7.0 mmol) in DMSO (40 mL). Add bis(pinacolato)diboron (7 mmol),
PdCl2(dppf)-CH2Cl2 (0.33 mmol), and KOAc (20 mmol). Flush the flask with N2, and
then heat the reaction mixture to 80°C with stirring. Continue to heat the reaction mixture
for 3 hours, and then cool to room temperature. Add water (66 mL) and extract the
aqueous layer with EtOAc (3 x 66 mL). Combine the organic layers and dry with
Na2SO4, filter, concentrate and purify by flash column chromatography (silica gel, 0-5%
Et2O/pentane) to give 1.56 g of the title compound (86%).

Dissolve 2-benzo[b]thiophen-5-yl-4,4,5,5-tetramethyl-[l,3,2] dioxaborolane (400
mg, 1.54 mmol) and the compound of Preparation 1 (270 g, 0.51 mmol) in CH3CN (24
mL). Add Pd(OAc)2 (0.05 mmol), tricyclohexylphosphine (0.075 mmol), and CsF (4.5
mmol). Flush the flask with N2, then heat the reaction mixture to 90°C with stirring.
Continue to heat the reaction mixture for 6 hours, and then cool to room temperature.
Add water (50 mL), and extract the aqueous layer with CH2Cl2 (3 x 25 mL). Combine the

organic layers and dry with Na2SO4, filter, concentrate and purify by flash column
chromatography (silica gel, 0-4% MeOH-NH4OH (10/1, v/v) in CH2C12) to give 240 mg
of the title compound (93%): 1H NMR (CDCl3) δ 7.99 (d, J = 1.2 Hz, 1H), 7.88 (d, J = 9.2
Hz, 1H), 7.82 (d, J - 8.4 Hz, 1H), 7.72 (d, J = 8.4 Hz, 1H), 7.58 (dd, J = 8.4,1.2 Hz, 1H),
7.41 (d, J - 5.6 Hz, 1H), 7.31 (d, J = 5.6 Hz, 1H), 7.21 (d, J = 2.8 Hz, 1H), 7.11 (dd, J =
9.2,2.8 Hz, 1H), 6.73 (d, J = 5.6 Hz, 1H), 6.60-6.63 (m, 4H), 4.04 (t, J = 5.0 Hz, 2H),
3.94 (s, 3H), 2.93 (t, J - 5.0 Hz, 2H), 2.67-2.79 (m, 4H), 1.66-1.75 (m, 4H), 1.44-1.55 (m,
2H).
Example 51
6-Benzo[b]thiophen-5-y]-5-[4-(2-piperidin-1 -yl-ethoxy)-phenoxy]-naphthalen-2-ol
Trifluoroacetate
Dissolve the compound of Example 50 (240 mg, 0.48 mmol) in
dimethylformamide (DMF, 7 mL), add sodium ethanethioJate (EtSNa, 100 mg, 1.19
mmol). Flush the flask with N2 and then heat the reaction mixture to 150°C. Continue to
heat the reaction mixture for 0.5 hours, cool to room temperature. Add water (15 mL),
and extract the aqueous layer with CH2Cl2 (3x15 mL). Combine the organic layers and
dry with Na2SO4, filter, concentrate and purify by flash column chromatography (silica
gel, 0-8% MeOH-NH4OH (10/1, v/v) in CH2C12) to give 140 mg of crude 6-
benzo[b]thiophen-5-yl-5-[4-(2-piperidin-1-yl-ethoxy)-phenoxy]-naphthalen-2-ol. Purify
the impure product by preparative HPLC (Gilson) to give 95 mg of the title compound
(55%): mass spectrum (ion spray): m/z = 496.3 (M+H-TFA).
Example 52
Acetic acid 6-(1,1-dioxo-1H-lλ6-benzo[b]thiophen-5-yl)-5-[4-(2-piperidin-1-yl-ethoxy)-
phenoxy]-naphthalen-2-yl ester
Dissolve 6-benzo[b]thiophen-5-yl-5-[4-(2-piperidin-1-yl-ethoxy)-phenoxy]-
naphthalen-2-ol (560 mg, 1.13 mmol) in CH2Cl2 (20 mL), and cool the solution to 0ºC.
Add DMAP (28 mmol), triethylarnine (Et3N, 8 mmol) and acetic anhydride (Ac2O, 1.9
mmol). Stir the reaction mixture for 3 hours at 0°C and then add water (40 mL). Extract

the aqueous layer with CH2Cl2 (3 x 40 mL). Combine the organic layers and dry with
Na2SO4, filter, concentrate and purify by flash column chromatography (silica gel, 0-5%
MeOH in CH2Cl2) to give 360 mg of the acylated product (59%): mass spectrum (ion
spray): m/z - 538.3 (M+H). Dissolve the acylated product (110 mg, 0.2 mmol) in acetic
acid (AcOH, 1.1 mL) and add H2O2 (110 mg, 1.0 mmol, 30%wt). Heat the reaction
mixture to 90°C for one hour and then cool to room temperature. Add 1M aqueous
bisulfite solution (1 mL) and stir the reaction mixture for 10 minutes. Add saturated
aqueous NaHCO3 solution (20 mL) and extract the aqueous layer with CH2Cl2 (3 x 20
mL). Combine the organic layers and dry with Na2SO4, -filter, concentrate and purify by
flash column chromatography (silica gel, 0-5% MeOH in CH2Cl2) to give 51 mg of the
title compound (44%): mass spectrum (ion spray): m/z = 570.3 (M+H).
Example 53
6-(1,1 -Dioxo-1H-1λ6-benzo [b] thiophcn-5-yl)-5-[4-(2-piperidin-l -yl-ethoxy)-phenoxy]-
naphthalen-2-ol Trifluoroacetate
Dissolve the compound of Example 52 (51 mg, 0.089 mmol) in MeOH (2 mL;.
Add NaHCO3 (0.10 mmol) and stir the reaction mixture for 3 hours at room temperature,
Remove the solids by filtration. Concentrate the filtrate and purify the residue by flash
column chromatography (silica gel, 2-10% MeOH-NHUOH (10/1, v/v) in CH2Cl2). Dry
the pooled materials at 40°C for overnight in vacuo to give 67 mg of the deprotected
product (85%). Dissolve the deprotected product (67 mg, 0.13 mmol) in CH2Cl2 (10 mL;
and cool it to -78°C. Add CF3CO2H (0.13 mL, 1.0 M in CH2Cl2) and then remove the
solvent under reduced pressure to give a solid. Dry the solid at room temperature
overnight in vacuo to give 82 mg of the title compound (100%): mass spectrum (ion
spray): m/z = 528.3 (M+H-TFA).
Preparation 17
6-(3,5-Difluoro-phenyl)-5-[4-(2-piperidin-1 -yl-ethoxy)-phenoxy]-naphthalen-2-ol
Combine the compound of Preparation 1 (440 mg, 0.84 mmol), 3,5-difluoro-
benzeneboronic acid (400 mg, 2.50 mmol), palladium(II)acetate (19 mg, 0.083 mmol),

tricyclohexylphosphine (35 mg, 0.125 minol), cesium fluoride (1.14 g, 7.52 mmol),
acctonitrilc (10 mL) and beat at 90°C. After 10 minutes, cool to ambient temperature,
dilute with dichloromethanc, load onto a 10 g SCX cartridge, wash with dichloromethane,
methanol, water, methanol, elute with ammonia solution (2N NH3 in methanol, 80 mL)
and remove solvent under vacuum. Dissolve in dichloromethane, chromatograph on
silica gel with dichloromethane/metbanol mixtures and add 1M hydrogen chloride in
diethyl ether (0.8 mL) to give 410 mg of 1-(2-{4-[2-(3,5-difluoro-phenyl)-6-memoxy-
naphthalen-1-yloxy]-phenoxy}-ethyl)-piperidine hydrochloride (93%).
Dissolve 1 -(2- {4-[2-(3,5-difluoro-phenyl)-6-methoxy-naphthalen-1-yloxy]-
phenoxy}-ethyl)-pipcridine hydrochloride (410 mg, 0.76 mmol) in dichloromethane (10
mL) and cool in an ice bath. Add boron tribromide (0.22 mL, 2.28 mmol) and stir for 2.5
hours. Add methanol (5 mL), warm to ambient temperature, dilute with dichloromethane
and wash with saturated aqueous sodium bicarbonate, dry with solid magnesium sulfate,
filter and remove solvent under vacuum. Chromatograph on silica gel with.
dichloromethane/methano] mixtures to give 350 mg of the title compound (96%).

Combine 6-(3,5-difluoro-phenyl)-5-[4-(2-piperidin-1-yl-ethoxy)-phenoxy3-
naphthalen-2-ol (300 mg, 0.63 mmol), sodium ethane thiol (530 mg, 6.33 mmol) and 1-
methyl-2-pyrrolidinone (10 mL) and heat to 130°C for 4.5 hours. Cool to ambient
temperature, dilute with dichloromethane, wash with brine and a saturated sodium
bicarbonate solution. Load organic phase onto a 10 g SCX cartridge, wash with
dichloromethane, methanol, elute with ammonia solution (2N NH3 in methanol, 80 mL)
and remove solvent under vacuum, Dissolve in dichloromethane and chromatograph on

silica gel with dichloromethane/methanol mixtures to give 260 mg of the title compound
(74%). Mass spectrum (ion spray): m/z= 560 (M+H).
6-(3,5-Bis-ethanesulfonyl-phenyl)-5-[4-(2-piperidin-1-yl-ethoxy)-phenoxy]-naphthalen-2-
ol
Dissolve the compound of Example 54 (160 mg, 0.29 mmol) in glacial acetic acid
(5 mL). Add an acetic acid solution of 77% mCPBA (300 mg, 1.31 mmol theoretical)
dropwise over 10 minutes and stir at ambient temperature for 1 hour. Remove solvent
under reduced pressure. Partition with dichloromethane and saturated sodium bicarbonate .
solution, dry with solid magnesium sulfate, filter and chromatograph on silica gel with
dichloromethane/memanol mixtures to give 130 mg of the title compound (72%). Mass
spectrum (ion spray): m/z= 624 (M+H).
Example 56
6-(3,5-Bis-ethanesulfonyl-phenyl)-5-[4-(2-piperidin-1-yl-ethoxy)-phenoxy]-naphthalen-2-
ol Hydrochloride
Dissolve the compound of Example 55 in dichloromethane and add 1N HCl in
Et2O (0.180 mL). Evaporate to dryness to give the title compound.
Preparation 18
{4-[2-(4-Methanesulfonyl-phenyl)-6-metlioxy-naphthalen-1 -yloxy]-phenyl}-carbamic
acid tert-butyl ester
Heat a solution of 6-methoxytetralone (9.6 g, 54 mmol), 4-bromothioanisole (25
mL, 123 mmol), sodium tert-butoxide (20.9 g, 217 mmol), palladium (D) acetate (610 mg,
2.72 mmol), racemic 2,2'-bis(diphenylphosphino)-1,1'-binaphthyl (1.8 g, 2.72 mmol) and
toluene (150 mL) at reflux for 18 hours, then cool to ambient temperature and evaporate
to dryness under reduced pressure. Dissolve the residue in dichloromethane and wash
with aqueous hydrochloric acid (1N), filter through celite and chromatograph twice on

silica gel with hexane/ethyl acetate mixtures to give 2.41 g of 6-methoxy-2-(4-
n)ethylsulfanyl-phenyl)-naphthalen-1-ol (15%).
Stir a solution of 6-methoxy-2-(4-methylsulfanyl-phenyl)-naphthalen-1 -ol (1.98 g,
6:68 mmol), 4-fluoro-nitrobenzene (0.78 mL, 7.34 mmol) and phosphazene base P4-t-
butyl (6.7 mL of 1M in hexane, 6.7 mmol) in N,N-dimethylformamide (30 mL) at
ambient temperature for 4 hours. Dilute the reaction with dichloroxnetfaane, wash with 1N
aqueous hydrochloric acid, water, dry with solid magnesium sulfate and chromatograph
on silica gel with hexane/ethyl acetate mixtures to give 2.18 g of 6-methoxy-2-(4-
methylsulfanyl-phenyl)-1-(4-nitro-phenoxy)-naphthalene (78%)
Add 77% mCPBA (340 mg, 2.00 mmol) to a solution of 6-methoxy-2-(4-
methylsulfanyl-phenyl)-1-(4-nitro-phenoxy)-naphthalene (270 mg, 0.66 mmol) in
dichloromethane (10 mL). Stir the reaction for 30 minutes, wash with saturated sodium
carbonate solution, dry with solid magnesium sulfate and filter through a 1 inch pad of
silica gel to give 290 mg of 2-(4-methanesulfonyl-phenyl)-6-methoxy-1-(4-nitro-
phenoxy)-naphthalene (98%).
Heat a solution of 2-(4-methanesulfonyl-phenyl)-6-methoxy-1-(4-nitro-phenoxy)-
naphthalene (1.67 g, 3.7 mmol), ammonium formate (4.7 g, 74 mmol), wet 20%
palladium hydroxide on carbon (420 mg, 25 wt%) and absolute ethanol (80 mL) at reflux
for 1 hour, then cool to ambient temperature, filter and evaporate to dryness under
reduced pressure. Partition the residue with dichloromethane/water. Dry the organic
layer with solid magnesium sulfate and chromatograph on silica gel with
dichloromethane/methanol mixtures to give 1.15 g of 4-[2-(4-methanesulfonyl-phenyl)-6-
methoxy-naphthalen-1-yloxy]-phenylamine (75%).
Heat a solution of 4-[2-(4-methanesulfonyl-phenyI)-6-methoxy-naphthalen-1-
yloxy]-phenylamine (170 mg, 0.41 mmol) and di-tert-butyl dicarbonate (140 mg, 0.66
mmol) in tetrahydrofuran (10 mL) at reflux for 4 hours, then cool to ambient temperature
and evaporate to dryness under reduced pressure. Chromatograph the residue on silica gel
with dichloromethane/ethyl acetate mixtures to give 210 mg of {4-[2-(4-methanesulfonyl-
phenyl)-6-methoxy-naphthalen-1-yloxy]-phenyl}-carbamic acid tert-butyl ester (97%).


Heat a solution of {4-[2-{4-methanesulfony]-phenyl)-6-methoxy-naphthalen-1-yloxy]-
phenyl}-carbamic acid tert-butyl ester (200 mg, 0.38 mmol), 2-chloroethyl-1-piperidine
hydrochloride (100 mg, 0.57 mmol) and 60% sodium hydride (38 mg, 0.94 mmol) in
N,N-dimethylformamide to 60°C and stir for 18 hours. Add potassium tert-butoxide (760
mg, 0.67 mmol) and 2-chloroethyl-1-piperidine hydrochloride (46 mg, 0.25 mmol) and
stir for an additional 2 hours, then cool to ambient temperature. Dilute the reaction with
dichloromethane, wash with saturated sodium bicarbonate, dry with magnesium sulfate
and chromatograph on silica gel with dichloromethane/methanol mixtures to give 120 mg
of the title compound (50%). Mass spectrum (ion spray): m/z= 631.3 (M+H).
Example 58
6-(4-Methahesulfonyl-phenyl)-5-[4-(2-piperidin-1-yl-ethylamino)-phenoxy]-naphthalen-
2-ol Dihydrochloride
Add 4M HCl/dioxane (3 mL, 12 mmol) to a solution of the compound of Example
57 (110 mg, 0.17 mmol) in dichlorometbane (3 mL) and stir the reaction for 40 minutes,
then evaporate to dryness under reduced pressure. Dissolve the residue in
dichloromethane (4 mL) and add boron tribromide (0.068 mL, 0.72 mmol). Stir the
reaction for 3.5 hours, then add aqueous saturated sodium bicarbonate (5 mL) and allow
the phases to separate. Dry the organic layer with solid magnesium sulfate and
chromatograph on silica gel with dichloromethane/methanol mixtures. Evaporate the
fractions containing product to dryness and redissolve in 5% methanol/dichloromethane

(3 mL). Add lM hydrogen chloride in diethyl ether (0.28 mL) then evaporate the solution
under reduced pressure to give 82 mg of the title compound (77%). Mass spectrum (ion
spray): m/z= 517.5 (M+H).

Using procedures similar to Preparation 18 and Example 58, convert {4-[2-(4-
methanesulfonyl-phenyl)-6-methoxy-naphthalen-1-yloxy]-phenyl}-carbamicacid tert-
butyl ester (200 mg, 0.39 mmol) and 2-(hexamethyleneimino)-ethyl chloride
hydrochloride (140 mg, 0.70 mmol) to 77 mg of the title compound (37%). Mass
spectrum (ion spray): m/z= 531 (M+H).
Preparation 19
4-[2-(4-Methanesulfonyl-phenyl)-6-memoxy-naphthalen-1 -yloxy]-phenol
Add 4-fluoro-benzaldehyde (2.20 mL, 20.3 mmol) to a solution of 6-methoxy-2-
(4-methylsulfanyl-phenyl)-naphthalen-1-ol (3.0 g, 10.1 mmol) and 60% sodium hydride
(400 mg, 10.1 mmol) in 1 -methyl-2-pyrrolidinone (30 mL). Heat the reaction to 170°C
for 70 minutes, then cool to ambient temperature. Dilute the reaction with ethyl acetate
(200 mL) and wash twice with 5% aqueous lithium chloride (500 mL), brine, 1N aqueous
hydrochloric acid, dry with solid magnesium sulfate and chromatograph on silica gel with
dichloromethane/hexane mixtures to give 1.29 g of 4-[6-methoxy-2-(4-methylsulfanyl-
phenyl)-naphthalen-1 -yloxy]-benzaldehyde (32%).
Combine 4-[6-methoxy-2-(4-memylsulfenyl-phenyl)-naphthalen-1-yloxy]-
benzaldehyde (970 mg, 2.49 mmol), sodium perborate monohydrate (2.5 mmol) and

glacial acetic acid (16 mL). Stir for 4 hours at ambient temperature, men evaporate to
dryness under reduced pressure. Partition with dichloromethane 50% saturated aqueous
sodium bicarbonate solution. Wash the organic layer with brine, dry with solid
magnesium sulfate, filter and chromatograph on silica gel with dichloromethane/methanol
mixtures to give 280 mg of the title compound (27%). Mass spectrum (ion spray): m/z=
419 (M-1).

Stir a solution of 4-[2-(4-methanesulfonyl-phenyl)-6-methoxy-naphthalen-1-
yloxy]-phenol (160 mg, 0.39 mmol), 2-(hexamethyleneimino)-ethyl chloride
hydrochloride (140 mg, 0.69 mmol), 60% sodium hydride (47 mg, 1.18 mmol) and N,N-
dimethylformamide (2 mL) for 18 hours at ambient temperature, then evaporate under
reduced pressure. Dissolve the residue in dichloromethane and wash with water, dry with
solid magnesium sulfate and chromatograph on silica gel with dichloromethane/methanol
mixtures. Combine the fractions containing product and add IN hydrogen chloride in
diethyl ether (0.30 mL). Concentrate the resulting solution under reduced pressure to give
160 mg of the title compound (69%). Mass spectrum (ion spray): m/z= 546 (M+H).

Example 61
5-[4-(2-Azepin-1 -yl-ethoxy)-phcnoxy]-6-(4-mcthanesulfonyl-phenyl)-naphthalen-2-ol
Hydrochloride
Convert the compound of Example 60 (160 mg, 0.27 mmol) to 5-[4-(2-a2epin-1-
yl-ethoxy)-phenoxy]-6-(4-methanesulfonyl-phenyl)-naphthalen-2-ol using a procedure
similar to Preparation 15 (85%). Dissolve the free base in dichloromethane, add 1N HCl
in Et2O (0.250 mL) then concentrate to give 140 mg of the title compound. Mass
spectrum (ion spray): m/z* 532 (M+H).
Preparation 20
N-tert-Butyl-4-(4,4,5,5-tetramethyl-[1,3,2]dioxaborolan-2-yl)-benzenesulfonamide
Place t-butylamine (4.32 mL, 41.1 mmol), triethylamine (8.15 mL, 58.7 mmol)
and dichloromethane (75 mL) in a 3-neck round bottom flask. Cool this stirring solution
to 0°C and add a solution of 4-bromobenzenesulfonyl chloride (10.0 g, 39.1 mmol) in
dichloromethane (50 mL). Add additional dichloromethane (25 mL) and stir the reaction
overnight, allowing it to warm to ambient temperature. Evaporate the reaction in vacuo.
Suspend the resulting white solid in ethyl acetate and filter it. Concentrate the filtrate in
vacuo and purify the resulting residue by flash chromatography (silica gel; 50%-80%
gradient CH2Cl2 in hexanes) to provide 9.85 g of 4-bromo-N-tert-butyl-
benzenesulfonamide (86%).
Place 4-bromo-N-tert-butyl-benzcnesulfonamide (2.00 g, 6.84 mmol),
bis(pinacolato)diboron (2.09 g, 8.21 mmol), PdCl2(dppf)2CH2Cl2 (175 mg, 0.24 mmol),
potassium acetate (2.02 g, 20.5 mmol) and anhydrous dimethyl sulfoxide (25 mL) in a
round bottom flask. Put the reaction in an oil bath and stir it at 90°C for 7.5 hours. Cool
the purple colored reaction to ambient temperature, quench with ample water and extract
the resulting aqueous mixture into dichloromethane. Wash the combined extracts with
water and brine; then dry (sodium sulfate) and evaporate them in vacuo. Purify the
resulting dark solid on a flash column (silica gel; 0%-5% gradient of EtOAc in CH2Cl2)
to provide 2.00 g of the title compound (86%).


Add the compound of Preparation 1 (335 mg, 0.64 mmol), N-tert-butyl-4-(4,4,5,5-
tetramemyl-[1,3,2]dioxaborolan-2-yl)-benzenesulfonamide (650 mg, 1.92 mmol) and
acetonitrile (6 mL) to a round bottom flask containing cesium fluoride (875 mg, 5,79
mmol) and acetonitrile (6 mL). To this mixture, add a sonicated suspension of palladium
(II) acetate (14 mg, 0.064 mmol) and tricyclohexylphosphine (27 mg, 0.096 mmol) in
acetonitrile (2 mL). Add additional acetonitrile (2 mL) and place the reaction in an oil
bath at 90°C. Stir the reaction for 20 minutes at 90°C. Cool the reaction to ambient
temperature and then filter it through a pad of Celite (rinse with ample, hot ethyl acetate).
Wash the filtrate With 50% aqueous sodium carbonate, saturated aqueous ammonium
chloride, water and brine; then dry (sodium sulfate) and evaporate the filtrate in vacuo.
Purify the resulting solid on a 25M silica column (2%-4% MeOH gradient in CH2Cl2) to
provide 315 mg of the title compound (84%). MS (1S+) m/e 589 (M + 1).
Example 63
N-tert-Butyl-4-{6-hydroxy-1-[4-(2-piperidin-l -yl-ethoxy)-phenoxy]-naphthalen-2-yl} -
benzenesulfonamide Hydrochloride
Place the product of Example 62 (30 mg, 0.051 mmol), sodium ethanethiolate (43
mg, 0.51 mmol) and dimethylformamide (2 mL) in a round bottom flask, at room
temperature. Place the reaction in a 90°C oil bath and stir it for 3 hours, then cool it to
ambient temperature. Quench the room temperature reaction with brine and extract it into
ethyl acetate. Wash the combined extracts with saturated aqueous sodium bicarbonate,
water and brine; then dry (sodium sulfate) and concentrate the extracts in vacuo. Purify
the crude material on a Chromatotron (silica gel; 6%-10% MeOH gradient in CH2Cl2).

Dissolve the purified solid in methanol (4 mL) and add a 1.0 M hydrochloric acid in
diethyl ether solution (0.10 mL) to it Shake the resulting solution for two minutes at
room temperature and then evaporate it in vacuo to give 25 mg of the title compound
(80%). MS (IS+) m/e 575 (M + 1 - HO).
Preparation 21
N,N-Dimethyl-4-(4,4,5,5-tetramethyl-[ 1,3,23dioxaborolan-2-yl)-benzenesulfonamide
Place dimethylamine (5.25 mL of a 2.0 M solution in THF, 10.4 mmol),
triethylamine (2.04 mL, 14.68 mmol) and dichloromethane (30 mL) in a round bottom
flask. Cool this solution to 0°C, while stirring, and add a solution of 4-
bromobenzenesulfonyl chloride (2.5 g, 9.78 mmol) in dichloromethane (30 mL). Add
additional dichloromethane (10 mL) and stir the reaction overnight, letting it warm to
ambient temperature. Concentrate the reaction in vacuo. Take up the resulting solid in
ethyl acetate and filter. Evaporate the filtrate in vacuo and dry the resulting solid by
vacuum to give 2.50 g of 4-bromo-N,N-dimethyl-benzenesulfonamide (97%).
Place 4-bromo-N,N-dimethyl-benzenesulfonamide (1.00 g, 3.77 mmol),
bis(pinacolato)diboron (1.15 g, 4.53 mmol), PdCl2(dppf)2CH2Cl2 (97 mg, 0.13 mmol),
potassium acetate (1.11 g, 11.32 mmol) and anhydrous dimethyl sulfoxide (12 mL) in a
round bottom flask. Put the reaction in an oil bath and stir at 90°C for 8 hours. Cool the
purple colored reaction to ambient temperature, quench with ample water and extract the
resulting aqueous mixture into dichloromethane. Wash the combined extracts with water
and brine; then dry (sodium sulfate) and evaporate the extracts in vacuo. Purify the
resulting solid on a flash column (silica gel; 2%-5% gradient of EtOAc in CH2Cl2, load
material in CH2Cl2) to provide 900 mg of the title compound (77%).


In a round bottom flask add the compound of Preparation 1 (175 mg, 0.33 mmol),
N,N-dimethyl-4-(4,4,5,5-tetramethyl-[1,3,2]dioxaborolan-2-yl)-benzenesulfonamide (311
mg, 0.99 mmol), acetonitrile (7 mL) and cesium fluoride (455 mg, 2.99 rnmol). To this
mixture add a sonicated suspension of palladium (II) acetate (8 mg, 0.033 mmol) and
tricyclohexylphosphine (14 mg, 0.050 mmol) in acetonitrile (1 mL), followed by
additional acetonitrile (3 mL). Place the reaction in a 90°C oil bath and stir for 10
minutes, then add more acetonitrile (3 mL). Heat the reaction at 90°C, with stirring, for
10 more minutes. Cool the reaction to ambient temperature and filter it through a pad of
Celite (rinse with ample, hot ethyl acetate). Wash the filtrate with 50% aqueous sodium
carbonate, saturated aqueous ammonium chloride and brine; then dry (sodium sulfate) and
evaporate it in vacuo. Purify the resulting solid on a Chromatotron (silica gel; 3%-8%
MeOH gradient in CH2Cl2) to obtain 160 mg of the title compound (87%). MS (IS+) m/e
561 (M+l).
Example 65
4-{6-Hydroxy-1-[4-(2-piperidin-1-yl-ethoxy)-phenoxy3-naphthalen-2-yl}-N,N-dimethyl-
benzenesulfonamide Hydrochloride
In a round bottom flask place the product of Example 64 (120 mg, 0.214 mmol),
dichloromethane (5 mL) and a 1.0 M hydrochloric acid in diethyl ether solution (0.43 mL,
0.43 mmol). Shake mis solution at ambient temperature for 2 minutes then evaporate it in
vacuo. After drylng on vacuum, add dichloromethane (10 mL) and place this solution in
an ice bath with stirring. Add a solution of 1.0 M boron tribromide in dichloromefcane

(0.750 mL, 0.750 mmol) and stir the reaction for 3-4 hours, keeping the temperature
between 0°C-10°C. Quench the reaction over saturated aqueous sodium bicarbonate then
extract it into ethyl acetate. Wash the combined extracts with saturated aqueous sodium
bicarbonate, water and brine; then dry (sodium sulfate) and evaporate them in vacuo.
Purify the crude solid on a Chromatotron (silica gel; 5%-l 1% MeOH gradient in CH2Cl2:
loaded with 7% MeOH/CHCl3). Dissolve the purified material in methanol (5 mL) and
add a 1.0 M hydrochloric acid in diethyl ether solution (0.43 mL). Shake the resulting
solution for two minutes at room temperature then evaporate it in vacuo to give 96 mg of
the title compound (77%). MS (IS+) m/e 547 (M + 1 - HCl).
Preparation 22
4-(4,4,5,5-Tetramethyl-[1,3,2]dioxaborolan-2-yl)-benzenesulfonic acid 2,2-dimethyl-
propyl ester
Add 4-bromobenzenesulfonyl.chloride (2.20 g, 8.61 mmol) and pyridine (30 mL)
to a round bottom flask. At ambient temperature, with stirring, add neopentyl alcohol
(1.39 mL, 12.91 mmol). After stirring the reaction overnight at ambient temperature
quench the reaction with saturated aqueous sodium bicarbonate and extract it with ethyl
acetate. Wash the combined extracts with saturated aqueous sodium bicarbonate, 0.05 N
aqueous hydrochloric acid and brine, then dry (sodium sulfate), and concentrate in vacuo.
Purify the resulting material on a flash column (silica gel; 30%-50% gradient of CH2Cl2
in hexanes) to provide 2.24 g of 4-bromo-benzenesulfonic acid 2,2-dimethyl-propyl ester
(85%).
Place 4-bromo-benzenesulfonic acid 2,2-dimethyl-propyl ester (1.00 g, 3.26
mmol), bis(pinacolato)diboron (1.07 g, 4.23 mmol), PdCl2(dppf)2CH2Cl2 (90mg, 0.12
mmol), potassium acetate (1.04 g, 10.6 mmol) and anhydrous dimethyl sulfoxide (12 mL)
in a round bottom flask. Put the reaction in an oil bath and stir at 90°C for 1 to 1.5 hours.
Cool the reaction to ambient temperature, quench with ample water and extract the
resulting aqueous mixture into dichloromethane. Wash the combined extracts with water
and brine; then dry (sodium sulfate) and evaporate them in vacuo. Purify the resulting
solid on a flash column (silica gel; gradient 10% bexane/CH2Cl2 to 100% CH2Cl2 to
5%EtOAc/CH2Cl2) to provide 950 mg of the title compound (82%).


In a round bottom flask add the compound of Preparation 3 (50 mg, 0.078 mmol),
4-(4,4,5,5-tetramethyl-[1,3,2}dipxaborolan-2-yl)-benzenesulfonic acid 2,2-dimethyl-
propyl ester (83 mg, 0.24 mmol) and acetonitrile (2 mL). To this solution add a sonicated
suspension of palladium (II) acetate (2 mg, 0.008 mmol) and tricyclohexylphosphine (3
mg, 0.012 mmol), cesium fluoride (107 mg, 0.71 mmol) in acetonitrile (1 mL). Place the
reaction in an oil bath at 90°C, and stir for 20 minutes. Then cool the reaction to ambient
temperature and filter it through a pad of Celite (rinse with ample, hot ethyl acetate).
Wash the filtrate with 50% aqueous sodium carbonate, saturated aqueous ammonium
chloride and brine; then dry (sodium sulfate) and evaporate it in vacuo. Purify the
resulting solid on a Chromatotron (silica gel; 2%-6% MeOH gradient in CH2Cl2) to obtain
320 mg of the title compound (60%). MS (IS+) m/e680 (M + 1).

To a round bottom flask add the product from Example 66 (42 mg, 0.062 mmol),
ammonium formate (29 mg, 0.464 mmol), 10% Pd/C (6 mg, -15% by weight) and MeOH

(5 mL). Heat the mixture at reflux for 35 minutes. Cool the reaction to ambient
temperature and filter it through a pad of Celite, then rinse the Celite with hot ethyl
acetate and hot methanol. Evaporate the filtrate in vacuo and purify the resulting residue
by radial chromatography over silica (2-5% MeOH gradient in CH2Cl2) to provide 27 mg
of 4-{6-hydroxy-1-[4-(2-piperidin-1-yl-ethoxy)-phenoxy]-naphthalen-2-yl}-
benzenesulfonic acid 2,2-dimethyl-propyl ester (74%). Dissolve the free base (6.7 mg) in
CH2Cl2 (3 mL) and add 0.023 mL (2 equivalents (eq.)) of a 1.0M solution of hydrochloric
acid in diethyl ether. Shake this solution for 1-2 minutes at ambient temperature and
evaporate it in vacuo to provide 7.1 mg of the title compound. MS (IS+) m/e 590 (M + 1 -
HCl).
Example 68
N-tert-Butyl-4- {6-methoxy-1-[4-(2-piperidin-1-yl-ethoxy)-phenoxy]-naphtbalen-2-yl} -N-
methyl-benzenesulfonamide
To a stirring room temperature solution of the product of Example 62 (79 mg,
0.013 mmol) in dimethylfonnamide (5 mL) add 60% sodium hydride (6 mg, 0.15 mmol).
Stir this mixture at ambient temperature for 10 minutes and then add iodomethane (0.014
mL, 0.15 mmol). Stir the reaction for 30 minutes at ambient temperature then quench it
with brine. Extract the resulting aqueous mixture into ethyl acetate. Wash the combined
extracts with brine; dry (sodium sulfate) and concentrate them in vacuo. Purify the
resulting material on a Chromatotron (silica gel; 3%-10% MeOH gradient in CH2Cl2) to
obtain 47 mg of the title compound (68%). MS (IS+) m/e 603 (M + 1).


In a round bottom flask place the product of Example 68 (80 mg, 0.13 mmol) and
trifluoroacetic acid (5 mL). Heat this solution at reflux for 15-20 minutes then cool to
ambient temperature. Quench the reaction mixture by pouring it over saturated aqueous
sodium bicarbonate men extract into ethyl acetate. Wash the combined extracts with
saturated aqueous sodium bicarbonate, water and brine; then dry (sodium sulfate) and
evaporate in vacuo. Purify the resulting material on a Chromatotron (silica gel; 4%-8%
MeOH gradient in CH2Cl2) to obtain 63 mg of the title compound (89%). MS (IS+) m/e
547 (M + 1).
Example 70
4- {6-Hydroxy-1-[4-(2-piperidin-1-yl-ethoxy)-phenoxy3-naphthalen-2-yl} -N-
methyl-benzenesulfonamide Hydrochloride
In a round bottom flask place the product of Example 69 (85 mg, 0.146 mmol),
dichloromethane (5 mL) and a solution of 1.0 M hydrochloric acid in diethyl ether (0.150
mL, 0.150 mmol). Shake this solution at ambient temperature for 2 minutes and men
evaporate it in vacuo. After drylng in vacuo, add dichloromethane (6 mL) and place this
solution in an ice bath with stirring. Add a solution of 1.0 M boron tribromide in
dichloromethane (0.32 mL, 0.32 mmol) and stir the reaction for 2-3 hours, keeping the
temperature between 0°C-10°C. Quench the reaction over saturated aqueous sodium
bicarbonate then extract it into ethyl acetate. Wash the combined extracts with saturated
aqueous sodium bicarbonate, water and brine; then dry (sodium sulfate) and evaporate in
vacuo. Purify the crude solid on a Chromatotron (silica gel; 6%-10% MeOH gradient in
CH2Cl2). Dissolve the purified material in methanol (5 mL) and add a solution of 1.0 M

hydrochloric acid in diethyl ether (0.30 mL). Shake the resulting solution for two minutes
at room temperature then evaporate in vacuo to give 71 nag of the title compound (85%).
MS (IS+) m/e 533 (M + 1 - HCl).

Add triethylamine (80 μL, 0.574 mmol) to a solution of the compound of Example
3 (103 mg, 0.186 mmol) in THF (5mL). Cool the solution to 0°C and add 4-
dimethylaminopyridine (10 mg, 0.082 mmol) followed by dropwise addition of isobutyric
anhydride (40 μL, 0.241 mmol). Allow the solution to warm to room temperature over 2
hours. Add additional isobutyric anhydride (200 μL, 1.206 mmol) and stir overnight at
room temperature. Dilute the solution with EtOAc (20 mL), and wash with 1N HCl,
saturated NaHCO3, and brine. Dry the organic layer over Na2SO4, filter and concentrate
in vacuo. Purify the crude residue by radial chromatography (80% CH2Cl2:18% EtOAc:
2% EtOH) to yleld 82 mg of isobutyric acid 6-(4-methanesulfonyl-phenyl)-5-[4-(2-
piperidin-1-yl-ethoxy)-phenoxy3-naphthalen-2-yl ester. Dissolve the free base in THF (5
mL) and add HCl (1.0M in Et2O, 0.4 mL, 0.4 mmol) to the solution. Concentrate the
solution in vacuo and crystallize the residue from Et2O/EtOH to afford 53 mg of the title
compound. MS (ion spray): 588 (M+H-HCl).

Example 72
6-(4-Methanesulfonyl-phenyl)-5-[4-(2-piperidin-1-yl-ethoxy)-phenoxy]-naphthalen-2-ol
Methancsulfonate
Heat approximately 1.0 g of the compound of Example 3 in a solvent mixture
consisting of 3 mL of 3A-ethanol and 5 mL ethyl acetate to provide a thin slurry. Add
methanesulfonic acid (185 mg) jn.l mL of 3A-ethanol to the hot slurry. Cool and stir for
approximately 1 hour upon reaching room temperature. Filter the slurry and rinse with
ethyl acetate. Vacuum dry the filter cake at 45°C over 2-3 days to recover approximately
1.11 g of the title compound.
Example 73
6-(4-Methanesulfonyl-phenyl)-5-[4-(2-piperidin-1-yl-ethoxy)-phenoxy]-naphthalen-2-ol
Succinate
Heat approximately 1.0 g of the compound of Example 3 in a solvent mixture
consisting of 10 mL of ethyl acetate and 1 mL 3A-ethanol. Add succinic acid (228 mg) to
the hot slurry to provide a thin slurry. Add 2 mL of additional 3A-ethanol. Briefly reheat
the slurry back to reflux, then cool to room temperature and allow the mixture to stir
15-30 minutes before filtering. Rinse the filter cake with ethyl acetate and vacuum dry at
45°C over 2-3 days to recover approximately 1.23 g of the title compound.

Preparation 23
Trifluoromethanesulfonic acid 6-methoxy-1-[4-(2-piperidin-1-yl-ethoxy)-benzoyl]-
naphthalen-2-yl ester
Dissolve 2,6-dimethoxynaphthalene (1.0 eq.) in CH2Cl2 (5 volume eq.) at ambient
temperature in a dry round bottom flask equipped with stir bar, temperature probe and N2
line. Cool the solution to 0 °C with an ice bath, and add 4-(2-piperidin-1-yl-ethoxy)-
benzoyl chloride (1.1 eq.). Add aluminum chloride (2.0 eq.). Once the reaction is
determined to be complete, quench the reaction slowly with 1 N NaOH and dilute with
additional water and CH2C12. Wash the aqueous layer with CH2Cl2 (20 xnL). Combine
the organic extracts and wash with brine and dry (Na2SO4). Recrystallize the crude
product from methanol to give (2,6-dimethoxy-naphthalen-1-yl)-[4-(2-piperidin-1-yl-
ethoxy)-phenyl]-methanone.
Dissolve(2,6-dimemoxy-naphthalen-1-yl)-[4-(2-piperidin-1-yl-ethoxy)-phenyl]-
methanone in CH2Cl2 (10 volume eq.) in a 3-neck round bottom flask equipped with a
pressure equalizing addition funnel, stirbar, and N2 source. Cool the flask in an ice/brine
bath and add 1.0 M BCl3 solution in CH2Cl2 (1.2 eq.) dropwise. The reaction solution
turns dark red and the temperature initially increases to 5 °C. After about 1 hour, quench
the reaction with methanol (S eq.) and allow to warm to room temperature. Dilute the
organic solution with CH2Cl2 (one volume eq.) and add a1.0M NaHCO3 solution (5
volume eq.) and stir for one hour. Separate the aqueous and organic layers. Wash the
aqueous layer with CH2Cl2 (one volume) and combine the organic layers. Wash with
saturated NH4Cl and dry over Na2SO4. Purify the product via column chromatography
(50/1 silica gel) eluting with CH2Cl2/hexanes (3/1) to yleld (2-hydroxy-6-methoxy-
naphthalen-1-yl)-[4-(2-piperidin-1-yl-ethoxy)-phenyl]-methanone.
Dissolve (2-hydroxy-6-memoxy-naphthalen-1 -yl)-[4-(2-piperidin-1 -yl-ethoxy)-
phenyl]-methanone in CH2Cl2 (10 volumes) in a three neck round bottom flask equipped
with a stir bar and N2 source and chill to 0°C in an ice/brine bath. Add pyridine (1.3 eq.).
Add trifluoromethanesulfonyl chloride (1.2 eq.) via syringe over 15 minutes. After about
15 minutes, quench the reaction with H2O (10 volumes), wash with 1 N aqueous HCl (5
volumes) and 1.0 N aqueous NaHCO3, and dry over Na2SO4. Obtain the title compound
in quantitative yleld after concentration.


Dissolve trifluoro-methanesulfonic acid 6-methoxy-1-[4-(2-piperidin-1-yl-
ethoxy)-benzoyl]-naphthalen-2-yl ester (555 nag, 1.0 mmol), 4-
methansulfonylphenylboronic acid (310 mg, 1.55 mmol), Pd(OAc)2 (23.9 mg, 0.11
mmol), Ph3P (54.2 mg, 0.21 mmol) and Na2CO3 (2.5 mL, 2M in water) in ethyleneglycol
dimethyl ether (DME, 30 mL). Reflux the mixture for 2 hours and add additional
Pd(OAc)2 (25.2 mg) and Ph3P (58.9 mg). Reflux for 2 hours then dilute the reaction
mixture with water and extract with chloroform. Dry the organic phase over Na2SO4,
filter and concentrate. Purify the crude material by loading on an SCX column and
eluting with 2M NH3/MeOH to afford 569 mg of the title compound (101 %). LCMS: m/z
= 544 (M+H)+
Example 75
[6-Hydroxy-2-(4-methanesulfonyl-phenyl)-naphthalen-1 -yl]-[4-(2-piperidin-1 -yl-ethoxy)-
phenyl]-memanone Hydrochloride
Add pyridine hydrochloride (4.0 g) to the compound of Example 74 (100 mg, 0.18
mmol). Purge the vessel with nitrogen, cap it, and heat to 200°C for 4 hours. Cool to
room temperature and dilute with saturated aqueous NaHCO3. Extract with 25%
isopropanol (i-PrOH) in CHC13, dry over Na2SO4 and concentrate in vacuo. Purify using
an SCX column (eluting with 2M NH3/MeOH) followed by flash chromatography (0-10%
MeOH/CHCl3). Dissolve the product in 1:1 CH3CN/1M aqueous HCl and lyophrilize to
yleld 70.3 mg of the title compound (68%). LCMS: m/z = 530 (M+H)+.

Example 76
[2-(4-Methanesulfonyl-pheny])-6-methoxy-naphthalen-1-yl]-[4-(2-piperidin-1 -yl-ethoxy)-
phenyl]-methanol
Dissolve the compound of Example 74 (200 mg, 0.37 mmol) in THF (30 mL).
Add lithium aluminum hydride (LAH, 70.3 mg). Quench with ice and water. Acidify
with 1M aqueous HCl and make the solution slightly basic with aqueous NaHCO3.
Extract with 25% i-PrOH in CHCl3. Purify the erode product using an SCX column
eluting with 2M NH3/MeOH to afford 185 mg of the title compound (92%) LCMS: m/z
= 546 (M+H)+
Example 77
[2-(4-Methanesulfonyl-phenyl)-6-methoxy-naphthalen-1-yl]-[4-(2-piperidin-1-yl-ethoxy)-
phenylj-methane
Dissolve the compound of Example 76 (185.2 mg, 0.33 mmol), Et3SiH (0.3 mL,
1.88 mmol) and TFA (0.3 mL, 3.8 mmol) in CH2Cl2 (30 mL). Stir at room temperature
for 1 hour. Quench with saturated aqueous NaHCCb and extract with 25% i-PrOH in
CH2Cl2. Dry over Na2SO4, filter and concentrate. Purify the crude material by flash
chromatography (0 - 5% MeOH/CH2Cl2 to afford 1.18 g of the title compound (63%).
LCMS: m/z = 530 (M+H)+
Example 78
6-(4-Methanesulfonyl-phenyl)-5-[4-(2-piperidin-1-yl-emoxy)-benzyl]-naphthalen-2-ol
Hydrochloride
Add pyridine hydrochloride (4 g) to the compound of Example 77 (110 mg, 0.21
mmol). Purge with nitrogen, cap the vessel and heat to 200°C for 2 hours. Cool the
reaction mixture and dilute with saturated aqueous NaHCO3. Extract with CH2Cl2, dry
over Na2SO4, filter and concentrate. Purify the crude product by flash chromatography
(0-10% MeOH/CH2Cl2). Dissolve the product in 1:1 CH3CN/IM aqueous HCl and
lyophilize to afford 92 mg of the title compound (80%). LCMS: m/z = 516 (M+H)+-HC1.

Preparation 24
5-Bromo-1,3-difluoro-2-methanesulfonyl-benzene
Dissolve 1,3-difluorobenzene (3.5 g, 30.7 mmol) into THF (100 mL). Cool the
mixture to -78°C and add n-butyl lithium (19 mL, 30.7 mmol). Stir for 20 minutes and
add dimethyldisulfide (3 mL, 3.38 mmol). Remove the cooling bath and warm to room
temperature. Pour the reaction mixture into ice (10 g) and add diethyl ether (100 mL).
Separate the layers and wash the organic layer with brine (20 mL). Dry with MgSO4,
filter, and concentrate in vacuo to give 4.3 g of l,3-difluoro-2-methylsulfanyl-benzene
(88%).
Combine 1,3-difluoro-2-methylsulfanyl-benzene (4.3 g, 27 mmol), iron (300 mg,
5.4 mmol), bromine (1.4 mL, 27 mmol), aluminium chloride (400 mg, 3.0 mmol) and
dichloromethane (100 mL), at 0°C. Stir the reaction mixture at room temperature for 2
hours. Add saturated sodium thiosulfate solution (20 mL) and diethyl ether (100 mL).
Separate the layers and wash the organic layer with brine (20 mL). Dry with MgSO4,
filter and concentrate in vacuo. Chromatograph the residue on a column eluting the
material with diethyl ether in hexane (0 to 5%) to give 1.1 g of 5-bromo-l ,3-difluoro-2-
methylsulfanyl-benzene (17%).
Combine 5-bromo-1,3-difluoro-2-methylsulfanyl-benzene (1.1 g, 4.6 mmol),
oxone (11 g, 18.4 mmol) and methanol (20 mL). Stir for 12 hours. Filter the suspension
and evaporate the filtrate. Dissolve the residue in dichloromethane (100 mL) and add
water (100 mL). Separate the organic layer and wash with brine (50 mL). Dry with
MgSO4, filter and concentrate in vacuo. Chromatograph the residue on a column eluting
the material with diethyl ether in hexane (0 to 5%) to give 497 mg of the title compound
(40%).


Combine palladium (II) acetate (13 mg, 0.06 mmol), tricyclohexylphosphine (27
mg, 0.10 mmol), cesium fluoride (518 mg, 3.4 mmol,) and acetonitrile (10mL). Stir for 5
minutes. Add the compound of Preparation 1 (200 mg, 0.38 mmol) and
bis(neopentylglycolato)diboron (129 mg, 0.57 mmol). Heat to 90°C for 1 minute and add
5-bromo-1,3-difluoro-2-methanesulfonyl-benzene (113 mg, 0.42 mmol) in acetonitrile (4
mL). Stir at 90°C for 10 minutes. Cool to room temperature and dilute the solution with
ethyl acetate (20 mL) and wash with saturated aqueous NaHCO3 (10 mL). Separate the
layers, wash the organic layer with brine (10 mL), dry with MgSO4, filter, and concentrate
in vacuo. Chromatograph the residue on a column eluting the material with methanol in
dichloromethane (0 to 5%) to give 150 mg of the title compound (69%): mass spectrum
(ion spray): m/z = 568.3 (M+H).
Example 80
6-(3,5-Difluoro-4-methanesulfonyl-phenyl)-5-[4-(2-piperidin-1-yl-ethoxy)-phenoxy]-
naphthalen-2-ol Hydrochloride
Dissolve the compound of Example 79 in ethyl acetate (10 mL) and diethyl ether
(5 mL). Add 2M HCl in diethyl ether (0.1 mL, 0.2 mmol). Concentrate the slurry and dry
in vacuo. Dilute the residue in dichforomethane (5.0 mL) and blanket with nitrogen.
Cool the solution to 0°C with an external ice bath. Add BBr3 (0.1 mL, 1.1 mmol) and stir
for 1 hour. Quench with water (1.0 mL) and dilute with dichloromethane (10 mL).
Separate the layers, wash the organic layer with saturated aqueous NaHCO3 (10 mL) and
brine (10 mL). Dry with MgSO4, filter, and concentrate in vacuo. Chromatograph the

residue on a column eluting the 6-(3,5-difluoro-4-methanesuIfonyl-phenyl)-5-[4-(2-
piperidin-1-yl-ethoxy)-phenoxy]-naphthalen-2-ol with a step gradient of
methanol/dichloromethane (0 to 5%). Dissolve the free base in diethyl ether (5.0 mL) and
ethyl acetate (6.0 mL).. Add 2M HCl in diethyl ether (0.1 mL, 0.2 mmol). Collect the
precipitate on filter paper and rinse with diethyl ether to give 31 mg of the title compound
(20%): mass spectrum (ion spray): m/z: 554.3 (M+H-HCl).
Preparation 25
Acetic acid 5-[4-(2-piperidin-1-yl-ethoxy)-phenoxy]-6-trifluoromethanesulfonyloxy-
naphthalen-2-yl ester
Dissolve the compound of Preparation 2 (800 mg, 1.33 mmol) in CH2Cl2 (20 mL)
under N2 and cool to OºC. Add Et3N (670 mg, 6.63 mmol) and Ac2O (200 mg, 1.99
mmol) drop wise to the reaction mixture. Stir the solution for 3 hours. Add water (100
mL) and extract the aqueous layer with CH2Cl2 (3 X 100 mL). Combine the organic
layers and dry with Na2SO4. Filter and concentrate to give 860 mg of the title compound
as colorless oil (100%).

Combine Pd(OAc)2 (46 mg, 0.20 mmol), tricyclohexylphosphine (95 mg, 0.34
mmol), and CsF (1.85 g, 12.26 mmol) in CH3CN (20 mL) under N2. Stir the reaction
mixture for 5 minutes. Add acetic acid 5-[4-(2-piperidin-1-yl-ethoxy)-phenoxy]-6-
trifluoromethanesulfonyloxy-naphthalen-2-yl ester (730 mg, 1.36 mmol) and
bis(neopenty] glycolato)diboron (460 mg, 2.04 mmol) to the reaction mixture. Heat to

90ºC and stir for about 5 minutes. Add trifluoro-methancsulfonic acid 4-
methanesulfonyl-3-methoxy-phenyl ester (500 mg, 1.5 mmol) and continue to heat the
mixture for two hours. Cool to room temperature, add water (100 mL), and extract the
aqueous layer with CH2Cl2 (3 X 100 mL). Combine the organic layers and dry "with
Na2SO4, filter and concentrate. Purify by flash column chromatography (silica gel, 0 to
5% MeOH/CH2Cl2) to give 260 mg of the title compound (33%): mass spectrum (ion
spray): m/z = 590.4 (M+H).
Example 82
6-(4-Methanesulfonyl-3-methoxy-phenyl)-5-[4-(2-piperidin-1-yl-ethoxy)-phenoxy]-
naphthalen-2-ol Hydrochloride
Dissolve the compound of Example 81 (210 mg, 0.36 mmol) in MeOH (4 mL).
Add NaHCO3 (60 mg, 0.72 mmol) and stir the reaction mixture for 12 hours at room
temperature. Filter and remove the solvent under reduced pressure. Purify the residue by
flash column chromatography (silica gel, 2 to 10% MeOH-NH4OH (10/1, v/v)CH2Cl2) to
give 150 mg of 67(4-methanesulfonyl-3-methoxy-phenyl)-5-[4-(2-piperidin-1-yl-ethoxy)-
phenoxy]-naphthalen-2-ol (75%). Dissolve the free base (150 mg, 0.27 mmol) in CH2Cl2
(5 mL) and cool to -78°C. Add 2M HCl in diethyl ether (0.2 mL) and stir the solution for
5 minutes. Remove the solvent under reduced pressure to give a solid. Dry the solid at
room temperature overnight in vacuo to give 140 mg of the title compound (87%): mass
spectrum (ion spray): m/z = 548.1 (M+H-HCl).
Preparation 26
2-(4-propylsulfany]-phenyl)-boronic acid
Dissolve 4-bromo-benzenethiol (2.0 g, 10.6 mmol) in dry dimemylformamide (50
mL) and cool to 0°C under nitrogen. Add sodium hydride (305 mg, 12.7 mmol) in
portions. After the vigorous gas evolution stops, add l-bromo-propane (1.4 mL, 15.9
mmol) and stir the reaction mixture overnight at room temperature. Slowly pour the
reaction into water (400 mL) and extract with diethyl efter (2 x 150 mL). Wash the
combined organic layers with water (100 mL). Dry the organic layer with sodium sulfate,

filter and concentrate in vacuo to yleld 2.7 g of l-bromo-4-propylsulfanyl-benzene
(quantitative yleld).
Dissolve 1-bromo-4-propylsulfanyl-benzene (2.7g, 11.6 mmol) in dry
tetrahydrofuran (100 mL) and cool the solution to -78°C. Add 2.5 M butyllithium in
hexanes (5.1 mL, 12.8 mmol) dropwise and allow the reaction mixture to warm to -40°C.
Stir for 30 minutes and cool the reaction to -78°C. Add triisopropyl borate (8.0 mL, 34.8
mmol) and allow the reaction mixture to slowly warm to room temperature. Add 10%
aqueous potassium hydroxide (100 mL, 179 mmol) and stir overnight. Slowly pour the
reaction mixture into a mixture of concentrated HCl and ice. Extract the aqueous solution
with dichloromethane, dry with sodium sulfate and concentrate in vacuo to yleld 1.9 g of
the title compound (86%).

Combine 2-(4-propylsulfanyl-pnenyl)-boronic acid (168 mg, 0.85 mmol), the
compound of Preparation 1 (150 mg, 0.28 mmol) and cesium fluoride (214 mg, 1.4 mmol)
in a flame-dried flask fitted with a reflux condenser and purge with nitrogen. In a
separate dried flask combine palladium (II) acetate (6.2 mg, 0.03 mmol) and
tricyclohexylphosphine (12 mg, 0.04 mmol). Add dry acetonitrile (3 mL) and sonicate for
10 minutes under nitrogen. Add the catalyst mixture to the solids and plunge the flask
into a 90°C oil bath. After 30 minutes cool the suspension to room temperature and filter
through celite. Concentrate the filtrate in vacuo. Chromatograph the resultant residue on
a SiO2 column with methanol in dichloromethane (2%) to give 77 mg of the title
compound (51%): mass spectrum (ion spray): m/z = 528.3 (M+H).

Example 84
6-(4-propylsulfanyl-phenyl)-5-[4-(2-piperidin-1-yl-ethoxy)-phcnoxy]-naphthalen-2-ol
Dissolve the compound of Example 83 (77 mg, 0.15 mmol) in dichloromethane (2
mL). Add 2M HCl in diethyl ether (0.15 mL, 0.29 mmol) and stir for 1 minute. Remove
the solvent in vacuo and place on a high vacuum pump for 20 minutes. Dissolve the foam
in dry dichloromethane (2 mL) and cool to 0°C. Add BBr3 (70 ΜL, 0.73 mmol) dropwise.
Stir for 30 minutes, quench by pouring into saturated aqueous sodium bicarbonate (10
mL) and extract with dichloromethane (2x10 mL). Dry the combined organic layers
with sodium sulfate and concentrate in vacuo. Chromatograph the residue on a SiO2
column with methanol in dichloromethane (5%) to yleld 58 mg of the title compound
(78%): mass spectrum (ion spray): m/z - 514.3 (M+H).
Example 85
5-[4-(2-Piperidin-1 -yl-ethoxy)-phenoxy3-6-[4-(propane-1 -sulfonyl)-phenyl]-naphthalen-2-
ol
Dissolve the compound of Example 84 (58 mg, 0.11 mmol) in glacial acetic acid
(1.1 mL) and add sodium perborate (33 mg, 0.33 mmol). Stir the reaction mixture
overnight and pour into saturated aqueous sodium bisulfite (10 mL). Extract with
dichloromethane (2X10 mL) and wash the combined organic layers with saturated
aqueous sodium bicarbonate (10 mL). Dry the organic layer with sodium sulfate, filter
and concentrate in vacuo. Chromatograph the residue on a SiO2 column with methanol in
dichloromethane (5%) to yleld 28 mg of the title compound (47%): mass spectrum (ion
spray) m/z - 546.3 (M+H).
Example 86
5-[4-(2-Piperidin-l -yl-ethoxy)-phenoxy]-6-[4-(propane-1-sulfonyl)-phenyl]-naphthalen-2-
ol Hydrochloride
Dissolve the compound of Example 85 (28 mg, 0.05 mmol) in dry
dichloromethane (1 mL) and add 2M HCl in diethyl ether (0.10 mL, 0.20 mmol). Stir at

room temperature for 10 minutes. Remove the solvent with a stream of nitrogen and dry
the solids in a vacuum oven at 50°C overnight to yleld 27.9 mg of the title compound
(93%): mass spectrum (ion spray) m/z = 546.3 (M+H-HCl).
Preparation 27
1-{2-[4-(6-Benzyloxy-2-bromo-benzo[b]thiophen-3-yloxy)-phenoxy]-ethyl}-piperidine
Dissolve 6-methoxy-benzo[b]thiophene (J. Med. Chem. 32:2548,1989; 26.1 g,
146 mmol) in DMF (500 mL). Add ethanethiol sodium salt (37 g, 440 mmol)and heat to
150°C with stirring overnight. Add additional ethanethiol sodium salt (12.8 g, 152 mmol)
and continue to heat at 150°C overnight. Concentrate in vacuo to ¼ volume. Partition
reaction mixture between ethyl acetate (500 mL) and water (500 mL), separate layers,
wash organic layer with water (2 X 500 mL), brine (500 mL), and dry with magnesium
sulfate. Filter and concentrate in vacuo to give 8 g of benzo[6]thiophen-6-ol. Back
extract aqueous layers with ethyl acetate (3 X 1000 mL) wash organics with brine, and dry
with magnesium sulfate. Concentrate in vacuo to obtain an additional 15 grams of
baizo[b]thiophen-6-ol. Distill off remaining DMF to yleld 22.7 g (100%) of
benzo[b]thiophen-6-ol.
Dissolve benzo[b]thiophen-6-ol (10 g, 67 mmol) in pyridine (300 mL). Add 2,2-
dirnethyl-propionyl chloride (38 mL, 308 mmol) dropwise, and stir at room temperature
for 8 hours. Concentrate in vacuo to ¼ volume, partition between ethyl acetate (250 mL)
and water (250 mL). Separate layers, wash organic layer with water (250 mL) and brine
(200 mL). Dry with magnesium sulfate, filter, and concentrate in vacuo to give 15 g of
2,2-dimethyl-propionic acid benzo[b]thiophen-6-yl ester (98%).
Dissolve 2,2-dimethyl-propionic acid benzo[b]tbiophen-6-yl ester (22.0 g, 94.0
mmol) in dichloromethane (500 mL). Add bromine (12.6 mL, 244 mmol), dropwise, and
stir at room temperature for 2 hours. Add the reaction mixture into saturated aqueous
sodium thiosulfate (500 mL). Separate the layers and extract the aqueous layer with
dichloromethane (500 mL). Combine the organic layers and wash with brine (100 mL).
Dry with magnesium sulfate, filter, and concentrate in vacuo to give the crude solid
material. Wash the solid with hexane (20 mL), diethyl ether (20 mL) and
dichloromethane (20 mL). Dry in vacuo to give 30 g (81%) of 2,2-dimethyl-propionic
acid 2,3-dibromo-benzo[b]thiophen-6-yl ester.

Dissolve 2,2-dimethyl-propionic acid 2,3-dibromo-benzo[b]thiophen-6-yl ester
(32 g, 82 mmol) in ethanol (725 mL), add 50% aqueous solution of potassium hydroxide
(39 mL, 328 mmol) and heat to reflux for 4 hours. Concentrate in vacuo to ¼ volume,
partition between ethyl acetate (500 mL) and saturated aqueous ammonium chloride (500
mL), separate layers, wash organic with saturated aqueous ammonium chloride (2x 500
mL), and brine (300 mL). Dry with sodium sulfate, filter, and concentrate in vacuo to
give 25.5 g of 2,3-dibromo-benzo[b]thiophen-6-ol (100%).
Add a solution of 2,3-dibromo-benzo[b]thiophen-6-ol (43.9 g, 143 mmol) in DMF
(1000 mL), dropwise, to a suspension of sodium hydride in DMF (1.5 L) at 0°C. Stir for
20 minutes, add benzyl bromide (17mL, 143 mmol). Remove ice bath, and stir at room
temperature for 2 hours. Pour reaction mixture into water (8 L) and ethyl acetate (4 L)
and stir overnight Separate layers and wash organic layer with water (3 X 800 mL) and
brine (800 mL). Dry with sodium sulfate, filter, and concentrate in vacuo to give 52.4 g
of 6^benzyloxy-2,3-dibromo-1Denzo[b]thiophene (92%).
Dissolve 6-benzyloxy-2,3-dibromo-benzo[b]tbiophene (20 g, 50 mmol) in
dichloromethane (88 mL) and add trifluoroacetic acid (88 mL). Stir for 10 minutes,.tben
add 30% aqueous solution of hydrogen peroxide (5.1 mL, 50 mmol) and stir for 4 hours.
Add solid sodium bisulfite (2.2 g, 21 mmol), dilute with water (30 mL), stir for 15
minutes, and then concentrate in vacuo. Partition residue between dichloromethane (150
mL) and saturated aqueous sodium bicarbonate (150 mL), separate layers, wash organic
layer with additional saturated aqueous sodium bicarbonate (150 mL) and brine (100 mL).
Dry with sodium sulfate, filter, and concentrate in vacuo. Chromatograph on a SiO2
column eluting with 100% dichloromethane to give 12.8 g of 6-benzyloxy-2,3-dibromo-
benzo[b]thiophene 1-oxide (62%).
Dissolve 6-benzyloxy-2,3-dibromo-benzo[b]thiophene 1-oxide (5.9 g, 14.2 mmol)
in THF (120 mL). Add a suspension of 4-(2-piperidin-1-yl-ethoxy)-phenol (3.14 g, 14.2
mmol) and potassium tert-butoxide (1.75 g, 15.6 mmol) in THF (120 mL) and stir at 45°C
for 1 hour. Partition reaction mixture between dichloromethane (400 mL) and saturated
aqueous NH4CI (400 mL) and separate. Wash the organic layer with saturated aqueous
NH4Cl (400 mL) and brine. Dry with sodium sulfate, filter, and concentrate in vacuo.
Chromatograph the residue on a SiO2 column eluting with methanol in dichloromethane

(0 to 5%) to giro -5.9 g of 1-{2-[4-(6-benzyloxy-2-bromo-1-oxo-1H-1λ4-
benzo[b]thiophen 3~yloxy)-phenoxy]-^yl}-piperidine (88%).
Dissolve 1-{2-[4-(6-benzyloxy-2-bromo-1-Dxo-1H-1λ4-benzo[b]thiophen-3-
yloxy)-phenoxy] ethyl}-piperidine (22.36 g, 40.3 mmol) in methanol (160 mL) and
chloroform (80 mL)- Add a 30% solution of titanium trichloride in aqueous HCl (31.4
mL, 80.6 mmol) and stir at ambient temperature for 2 hours. Quench reaction mixture
with saturated aqueous sodium bicarbonate (500 mL) and dilute with dichlorornethane
(500 mL). Separate layers and wash the organic layer with saturated aqueous sodium
bicarbonate (500 mL), water (500 mL), and brine (500 mL). Dry with sodium sulfate,
filter and concentrate in vacuo. Chromatograph the residue on a SiO2 column eluting
with methanol (containing 10% NH4OH) in dichloromethane (0 to 2%) to give 19.2 g of
the title compound (88%).

Dissolve 1 - (2 -[4-(6-benzyloxy-2-bromo-benzo[b]thiophen-3-yloxy)-phenoxy]-
ethyl}-piperidine (700 mg, 1.3 mmol) in dioxane (13 mL) and 10% aqueous sodium
carbonate (6.9 mL, 6.5 mmol) and add 4-(ethanesulphonyI)benzene boronic acid (430 mg,
2 mmol) and Pd(PPh3)4 (150 mg, 0.13 mmol). Heat to 70°C and stir overnight. Dilute
with diethyl ether (25 mL) and water (25 mL), filter through Cehte, and separate layers.
Extract the aqueous layer with diethyl ether (50 mL). Combine the organic layers and
wash with water (50 mL; and brine (50 mL). Dry with sodium sulfate, filter, and
concentrate in vacuo. Chromatograph residue on a SiO2 column eluting with methanol in

dichloromethane (0 to 5%) to give 400 mg of the title compound (49%): mass spectrum
(ion spray): m/z = 628.3 (M+H).
2-(4-Ethanesulfonyl-pheny])-3-[4-(2-piperidin-1-yl-ethoxy)-phenoxy]-ben2o[b]thic)phen-
6-ol
Dissolve the compound of Example 87 (400 mg, 0.64 mmol) in methanol (7 mL)
and ethyl acetate (7 mL): Add ammonium formate (521 mg, 8.3 mmol) and palladium
hydroxide (240 mg) and heat to reflux for 5 hours. Filter the reaction mixture and
concentrate in vacuo to give 300 mg of the title compound (86%): mass spectrum (ion
spray): m/z = 538 (M+H).
Example 89
2-(4-Ethanesulfonyl-phenyl)-3-[4-(2-piperidin-1-yl-ethoxy)-phenoxy]-benzo[b]thiophen-
6-ol Hydrochloride
Dissolve the compound of Example 88 (300 mg, 0.56 mmol) in dichloromethane
(10 mL) and methanol (0.5 mL). Add 2M HCl in diethyl ether (0.4 mL) and stir for 10
minutes. Concentrate in vacuo and dry the solids in a vacuum oven at 50°C overnight to
give 224 mg of the title compound (71%): mass spectrum (ion spray): m/z = 538 (M+H).


Sonicate a suspension of palladium (II) acetate (103 mg, 0.46 mmol) and .
tricyclohexylphosphine (193 mg, 0.69 mmol) in acetonitrile (3 mL) for 10 minutes. In a
separate flask, add a solution of 1-{2-[4-(6-benzyloxy-2-bromo-benzo[b]thiophen-3-
yloxy)-phenoxy]-ethyl}-piperidine (containing a 2,7-dibrominated impurity; 250 mg, 0.46
mmol) and 4-(metbanesulphonyl) benzene boronic acid (276 mg, 1.38 mmol) in
acetonitrile (6 mL) to cesium fluoride (629 mg, 4.14 mmol). Add the sonicated catalyst
mixture, and heat to 90°C for 1 hour. Concentrate in vacuo and partition the residue
between ethyl acetate (20 mL) and saturated aqueous sodium bicarbonate (20 mL). Wash
the organic layer with saturated aqueous ammonium chloride (30 mL) and brine (20 mL).
Dry with sodium sulfate, concentrate in vacuo, and chromatograph the residue on a SiO2
column eluting with methanol in dichloromethane (0 to 5%) to give 220 mg of the title
compound-contaminated with the byproduct arising from cross-coupling at both the 2-
and 7-positions. Separate this mixture by preparative HPLC to yleld 85 mg of the title
compound (30%): mass spectrum (ion spray): m/z = 614 (M+H).
Example 91
2-(4-Methanesulfonyl-phenyl)-3-[4-(2-piperidin-1-yl-ethoxy)-phenoxy]-
benzo[b]thiophen-6-ol
Dissolve the compound of Example 90 (85 mg, 0.14 mmol) in methanol (14 mL)
and ethyl acetate (14 mL). Add ammonium formate (262 mg, 4.2 mmol) and palladium
hydroxide (90 mg) and heat to reflux for 1 hour. Filter the reaction mixture and
concentrate in vacuo. Partition the residue between ethyl acetate:methanol (5:1,6 mL)
and saturated aqueous sodium bicarbonate:brine (1:1,6 mL). Wash the organic layer with
brine, and dry with sodium sulfate. Concentrate in vacuo to give 50 mg of the title
compound (6S%): 1H NMR (CDCl3): δ 7.85 (s, 4H), 7.18 (d, J = 8.2 Hz, 1H), 7.14-7.12
(m, 1H), 6.78-6.74 (m, 3H), 6.59-6.55 (m, 2H), 4.07 (t, J = 5.4 Hz, 2H), 3.05 (s, 3H),
2.92-2.88 (m, 2H), 2.69 (bs, 4H), 1 .74-1.68 (m, 4H), 1.50 (bs, 2H).

Example 92
2-(4-Methanesulfonyl-phenyl)-3-[4-(2-piperidin-1 -yl-ethoxy)-phenoxy]-
benzo[b]thiophcn-6-ol Hydrochloride
Dissolve the compound of Example 91 (50 mg, 0.09 mmol) in ethyl acetate (1
mL), dilute with diethyl ether (5 mL), and immediately place into an ice bath and add 2M
HCl in diethyl ether (0.07 mL). Collect the precipitate on filter paper and rinse with
diethyl ether. Dry the solid in a vacuum oven overnight at 60°C to give 19 mg of the title
compound (38%): mass spectrum (ion spray): m/z - 524 (M+H).

Dissolve 1-{2-[4-(6-benzyloxy-2-bromo-benzo[b]thiophen-3-yloxy)-phenoxy]-
ethyl}-piperidine (350 mg, 0.65 mmol) and 3-fluoro-4-methariesulfonyl-phenyl-boronic
acid (213 mg, 0.98 mmol) in dioxane (10 mL) and add 10% aqueous sodium carbonate (9
mL) and Pd(PPh3)4 (75 mg, 0.065 mmol). Heat to reflux for 3 hours. Partition the
reaction mixture between dichloromethane (20 mL) and saturated aqueous ammonium
chloride (20 mL). Wash the organic layer with brine (30 mL), dry with sodium sulfate,.
and concentrate in vacuo. Chromatograph the residue on a SiO2 column eluting with
methanol in dichloromethane (0 to 5%) to give 150 mg of the title compound
contaminated with a 2-H reduced byproduct. Take the mixture on to the next step without
further purification.

Example 94
l-(3-Fluoro-4-methanesulfonyl-phenyl)-3-[4(2-piperidin-1-yl-ethoxy)-phenoxy]-
benzo[b]thiophen-6-ol Trifluoroacetate
Dissolve the compound of Example 93 (150 mg, 0.24 mmol) in methanol (2 mL)
and ethyl acetate (2 mL). Add ammonium formate (300 mg, 4.8 mmol) and palladium
hydroxide (150 mg) and heat to reflux overnight. Filter the reaction mixture and
concentrate in vacuo. Chromatograph the residue on a SiO2 column eluting with
methanol in dichloromethane (0 to 10%) to give 80 mg of the title compound,
contaminated with the debenzylated 2-H reduced byproduct from the previous step.
Separate this mixture by preparative HPLC to yleld 13 mg of the title compound (8%):
mass spectrum (ion spray): m/z = 542 (M+H).

Sonicate a suspension of palladium (II) acetate (146 mg, 0.65 mmol) and
tricyclohexylphosphine (273 nig, 0.98 mmol) in acetonitrile (4 mL) for 10 minutes. In a
separate flask, add a solution of l-{2-[4-(6-benzyloxy-2-bromo-benzo[b]thiophen-3-
yloxy)-phenoxy]-ethyl}-piperidine (350 mg, 0.65 mmol) and 4,4,5,5-tetramethyl-2-{4-
trifluoromethanesulfonyl-phenyl)-[1,3,2]dioxaborolane (531 mg, 2.0 mmol) in acetonitrile
(9 mL) to cesium fluoride (889 mg, 5.9 mmol). Add the sonicated catalyst mixture, and
heat to 90°C for 2 hours. Concentrate in vacuo and partition the residue between ethyl
acetate (20 mL) and saturated aqueous sodium bicarbonate (20 mL). Combine the organic

layer with saturated aqueous ammonium chloride (20 mL) and filter. Wash the organic
layer with brine (20 mL), dry with sodium sulfate, and concentrate in vacuo.
Chromatograph the residue on a SiO2 column eluting with methanol in dichloromethane
(0 to 3%) to give 240 mg of the title compound (55%) contaminated with
tricyclohexylphosphine oxide. 1H NMR (CDCl3): 5 8.03-7.95 (m, 4H), 7.45-7.33 (m,5H),
7.32 (d, J = 2.3 Hz, 1H), 729 (d, J = 8.9 Hz, 1H), 6.96 (dd, J = 9.0,2.2 Hz, 1H), 6.89-6.79
(m, 4H), 5.13 (s, 2H), 4.03 (t, J = 6.0 Hz, 2H), 2.73 (t, J = 6.0 Hz, 2H), 2.48 (bs, 4H),
1.96-1.18 (complex multiplet obscured by P(O)Cy3,6H).
Example 96
3-[4-(2-Piperidin-1-yl-ethoxy)-phenoxy]-2-(4-trifluoromethanesulfonyl-phenyl)-
benzo[b]thiophen-6-ol
Dissolve the compound of Example 95 (contaminated with P(O)Cy3; 240 mg, 0.36
mmol) in methanol (4 mL) and ethyl acetate (4 mL). Add ammonium formate (113 mg,
1.8 mmol) and palladium hydroxide (60 mg) and heat to reflux for 3 hours. Filter and
concentrate in vacuo. Chromatograph the residue on a SiO2 column eluting with
methanol in dichloromethane (0 to 4%) to give 100 mg of the title compound (47%): 1H
NMR (CDCl3): 5 7.94 (s, 4H), 7.20 (d, J = 8.8 Hz, 1H), 7.14 (d, J = 2.2 Hz, 1H), 6.79-
6.76 (m, 2H), 6.75 (dd, J = 8.8, 2.2 Hz, 1H), 6.63-6.58 (m, 2H), 4.03 (t, J = 5.8 Hz, 2H),
2.80 (t, J = 5.8 Hz, 2H), 2.57 (bs, 4H), 1.68-1.61 (m, 4H), 1.49-1.44 (m, 2H).
Example 97
3-[4-(2-Piperidin-1-yl-ethoxy)-phenoxy]-2-(4-trifluoromethanesulfonyl-phenyl)-
benzo[b]thiopben-6-ol Trifluoroacetate
Dissolve the compound of Example 96 (100 mg, 0.17 mmol) in ethyl acetate (2
mL), dilute with diethyl ether (10 mL) and place in an ice bath. Immediately add 2M HCl
in diethyl ether (0.13 mL) and collect the solids on filter paper. Purify by preparative
HPLC to yleld 37 mg of the title compound (29%): mass spectrum (ion ispray): m/z = 578
(M+H).

Preparation 28
6-Methoxy-2-(4-methanesulfonylphenyl)-1-(4-iodophenoxy)naphthalene
Place 6-methoxy-1-tetralone (1 eq.), 4-bromothioanisole (2.5 eq.), palladium
acetate (0.01 eq.), 2-dicyclohexylphosphino-2'-(N,N-dimethylamino)biphenyl (0.02 eq.)
and toluene in a 3 neck flask equipped with a mechanical stirrer, reflux condenser,
nitrogen purge and a temperature probe. Add sodium tert-butoxide (4 eq.) and heat the
slurry to reflux. After about 2-4 hours, cool the reaction to room temperature and add 3M
aqueous HCl along with tetrahydrofuran. Stir the biphasic reaction mixture for 30
minutes before filtration and separation of the layers. Concentrate the organic layer to
isolate 6-methoxy-2-(4-methylthiophenyl)naphthalene-1-ol by filtration.
Place sodium hydride (1.05 eq.) in dry dimethylformamide in a 3 neck flask
equipped with a mechanical stirrer, addition funnel with nitrogen purge, and a
temperature probe under nitrogen. Charge the addition funnel with 6-methoxy-2-(4-
methylthiophenyl)naphthalene-1-ol (1 eq.) dissolved in dry dimethylformamide. Add this
solution dropwise to the stirred sodium hydride solution at a rate that holds the
temperature below 35°C. Stir the reaction mixture for 30 minutes before adding
4-fluoronitrobenzene with additional dry dimethylformamide. Heat the solution to 60°C.
Once the reaction is complete, cool the flask and add water slowly to cause precipitation
of the product. Filter the crude product and wash with water and then methyl tert-butyl
ether. Dry the filter cake in a vacuum oven to give 6-methoxy-2-(4-methylthiophenyl)-1-
(4-nitrophenoxy)naphthalene.
Place meta-chloroperbenzoic acid (2.5 eq.) and methylene chloride in a 3 neck
flask equipped with a mechanical stirrer, addition funnel with nitrogen purge, and a
temperature probe. Charge the addition funnel with 6-methoxy-2-(4-methylthiophenyl)-1-
(4-nitrophenoxy)naphthalene (1 eq.) dissolved in methylene chloride. Add this solution
dropwise to the stirred slurry of perbenzoic acid at 10°C. Upon completion of the
addition, stir the solution for 30 minutes. Upon reaction completion, add 1N aqueous
NaOH slowly holding the temperature at or below 25°C. Separate the layers and
concentrate the organic layer. Purify the crude reaction concentrate on silica gel eluting
with methylene chloride to afford 6-methoxy-2-(4-methanesulfonylphenyl)-1-(4-
nitrophenoxy)naphthalene.

Place 6-methoxy-2-(4-methanesulfonylphenyl)-1-(4-nitrophenoxy)naphthalene in
a hydrogenation vessel with 3 volumes of dirnethylformamide and 5% Pd/C catalyst.
Pressurize the vessel with hydrogen and once the reaction is deemed complete, remove
the catalyst by filtering over Hyflo. To the filtrate add 1N aqueous HCl to precipitate the
crude product. Filter the precipitate, wash with 1N aqueous HCl and place the filter cake
in a vacuum drylng oven to give 6-methoxy-2-(4-methanesulfonylphenyl)-1-(4-
aminophenoxy)naphthalene hydrochloride.
Place 6-methoxy-2-(4-methanesulfonylphenyl)-1 -(4-aminophenoxy)naphthalene
hydrochloride (1 eq.), iodine (0.6 eq.), copper iodide (1.05 eq.) and acetonitrile in a 3 neck
flask equipped with a mechanical stirrer, addition runnel, nitrogen purge and temperature
probe. Charge the addition funnel with isoamylnitrite (1.1 eq.) in acetonitrile and add this
mixture dropwise at 20°C or below. After the addition, stir the mixture for 1 hour. Once
the reaction is complete, add saturated sodium thiosulfate and methylene chloride to the
mixture and stir for 1 hour. Filter the reaction mixture and separate the layers.
Concentrate the organic layer to form a solid. Purify the solid on silica gel to afford the
title compound.
Alternative Preparation of the compound of Example 1
Place 6-methoxy-2-(4-methanesulfonylphenyl)-1 -(4-iodophenoxy)naphthalene (1
eq.), cesium carbonate (2 eq.), 1,10-phenanthroline (0.2 eq.), of copper iodide (0.1 eq.)
and 1-piperidineethanol (5 volumes) in a 3 neck flask equipped with a mechanical stirrer,
a reflux distillation head, and a temperature probe. Evacuate the system and back fill with
nitrogen 3 times, then heat to 170°C. After the reaction is complete, cool the flask to
80°C and place the system under vacuum to remove piperidineethanol by distillation.
Release the vacuum and cool the flask to 50°C at which time add 0.5N aqueous NaOH.
Cool the flask to less than 35°C and add methylene chloride. Separate the layers and add
methyl tert-butyl ether to the organic layer. Concentrate the organic layer to form a
precipitate. Filter the precipitate, wash it with methyl tert-butyl ether then dry it in a
vacuum oven. Dissolve the precipitate in methylene choride and purify-on silica gel to
afford the title compound.

Preparation 29
5-Bromo-2-methanesulfonyl-1,3-dimethyl-benzene
Add 5-bromo-2-fluoio-1,3-dimethyl-benzene (3.5 g, 17.2 mmol) to
dimethylformamide (DMF, 30 mL) at ambient temperature followed by sodium
thiomethoxide (1.32 g, 17.9 mmol). Heat at 50°C for 8 hours and dilute with water (10
mL) and diethyl ether (100 mL). Separate the layers, wash the organics with brine, and
dry with magnesium sulfate before concentrating to a residue. Chromatograph the residue
on a SiO2 column eluting with diethyl ether (20%) in hexane to give 566 mg (14%) of 5-
bromo-.1,3-dimethyl-2-methylsulfanyl-benzene.
Dissolve 5-bromo-1,3-dimethyl-2-methylsulfanyl-benzene (555 mg, 2.42 mmol)
in methanol (30 mL) and treat with oxone (6.0 g, 9.8 mmol). Stir the mixture at ambient
temperature for 1 hour. Filter the suspension through silica gel and elute with CH2Cl2
(100 mL). Evaporate the filtrate to give 316 mg (50 %) of the title compound.

Combine palladium (II) acetate (13 mg, 0.06 mmol), tricyclohexylphosphine (27
mg, 0.10 mmol), cesium fluoride (518 mg, 3.4 mmol,) and acetonitrile (10 mL). Stir for 5
minutes. Add the compound of Preparation 1 (200 mg, 0.38 mmol) and
bis(neopentylglycolato)diboron (129 mg, 0.57 mmol). Heat to 90°C for 1 minute and add
5-bromo-2-methanesulfonyl-1,3-dimethyl-benzene (110 mg, 0.42 mmol) in acetonitrile (4
mL). Stir at 90°C for 10 minutes. Cool to room temperature and dilute the solution with
ethyl acetate (20 mL) and wash with saturated aqueous NaHCO3 (10 mL). Separate the
layers, wash the organic layer with brine, dry with MgSO4, filter, and concentrate in

vacuo. Chromatograph the residue on a SiO2 column eluting with methanol (4%) in
dichloromethane to give 180 nig (76%) of the title compound. Mass spectrum (ion
spray): m/z = 560.3 (M+H).
Example 99
6-(3,5-Dimemyl-4-methylsulfonyl-phenyl)-5-[4-(2-piperidin-1-yl-ethoxy)-phenoxy]-
naphthalen-2-ol Hydrochloride
Dissolve the compound of Example 98 (180 mg, 0.32 mmol) in dichloromethane
(5 mL) and add 2.0 M hydrochloric acid in diethyl ether solution (0.4 mL, 0.8 mmol). Stir
this solution at ambient temperature for 2 minutes then evaporate in vacuo. After drylng
under vacuum, add dichloromethane (5 mL) and place this solution in an ice bath with
stirring. Add boron tribromide (0.1 mL, 1.1 mmol) and stir the reaction for 1 hour at
ambient temperature. Add saturated aqueous sodium bicarbonate (1 mL) and dilute with
CH2Cl2 (20 mL). Separate the layers and wash the organic layer with saturated aqueous
sodium bicarbonate and brine; then dry (magnesium sulfate) and evaporate in vacuo.
Chromatograph the residue on a SiO2 column eluting with methanol (4%) in
dichloromethane to give the free base (40 mg) of the title compound: mass spectrum (ion
spray): m/z = 560.3 (M+H). Dissolve the free base in EtOAc (2 mL) and Et2O (2 mL);
and add 2M HCl in Et2O (0.40 mL, 0.80 mmol). Stir at room temperature for 10 minutes.
Remove the solvent in vacuo and dry the solid under vacuum to yleld 30 mg (18%) of the
title compound. Mass spectrum (ion spray) m/z = 546.4 (M+H-HCl).
Preparation 30
4-Bromo-1 -methanesulfonyl-2-methylsulfanyl-benzene
Dissolve 4-bromo-2-fluoro-1-methanesulfpnyl-benzene (340 mg, 1.34 mmol) into
DMF (8 mL) and treat with sodium thiomethoxide (103 mg, 9.8 mmol). Stir at room
temperature for 2 days. Add water (10 mL) and CH2Cl2 (20 mL). Separate the layers and
wash the organic layer with aqueous lithium chloride (10 %), then dry (magnesium
sulfate) and evaporate in vacuo. Chromatograph the residue on a SiO2 column eluting
with EtOAc (20 %) in hexane to give 286 mg (76 %) of the title compound.


Combine palladium (II) acetate (13 mg, 0.06 mmol), tricyclohexylphosphine (27
mg, 0.10 mmol), cesium fluoride (518 mg, 3.4 mmol,) and acetonitrile (10 mL). Stir for 5
minutes. Add the compound of Preparation 1 (200 mg, 0.38 mmol) and
bis(neopentylglycolato)diboron (129 mg, 0.57 mmol). Heat to 90°C for 1 minute and add
4-bromo-1-methanesulfonyl-2-methylsulfanyl-benzene (118 mg, 0.42 mmol) in
acetonitrile (4 mL). Stir at 90°C for 10 minutes. Cool to room temperature and dilute the
solution with EtOAc (20 mL) and wash with saturated aqueous NaHCO3 (10 mL).
Separate the layers, wash the organic layer with brine (10 mL), dry with MgSO4, filter,
and concentrate in vacuo. Chromatograph the residue on a SiO2 column eluting with
methanol (4 %) in dichloromethane to give 150 mg (64 %) of the title compound. Mass
spectrum (ion spray): m/z = 578.3 (M+H).
Example 101
6-(4-Methanesulfonyl-3-methylsulfanyl-phenyl)-5-[4-(2-piperidin-1 -yl-ethoxy)-phenoxy]-
naphthalen-2-ol Hydrochloride
Dissolve the compound of Example 100 (150 mg, 0.26 mmol) in dichloromethane
(3 mL) and add 2.0 M hydrochloric acid in diethyl ether (0.2 mL, 0.4 mmol). Stir this
solution at ambient temperature for 2 minutes then evaporate in vacuo. After drylng in
vacuo, add dichloromethane (5 mL) and place this solution in an ice bath with stirring.
Add boron tribromide (0.1 mL, 1.1 mmol) and stir the reaction for 1 hour at ambient
temperature. Add saturated aqueous sodium bicarbonate (1 mL) and dilute with CH2Cl2
(20 mL). Separate the layers and wash the organic layer with saturated aqueous sodium

bicarbonate and brine; then dry (magnesium sulfate) and evaporate z>; vacuo.
Chromatograph the residue on a SiO2 column eluting with methanol (4%) in
dichloromethane to give 40 mg of the freebase of the title compound. Mass spectrum (ion
spray): m/z = 564.2 (M+H). Dissolve the free base in EtOAc (2 mL) and Et2O (2 mL),
and add 2M HCl in Et2O (0.40 mL, 0.80 mmol). Stir at room temperature for 10 minutes.
Remove the solvent in vacuo and dry the solid in a.vacuum to yleld 30 mg (19 %) of the
title compound. Mass spectrum (ion spray) m/z = 564.3 (M+H-HCl).
Preparation 31
2-(4-Cyclopropanesulfonyl-phenyl)-4,5,5-tetramethyl-[1,3,2]dioxaborolane
Dissolve 4-bromo-benzenethiol (2.00 g, 10.6 mmol) in dry DMSO (50 mL) under
a nitrogen atmosphere. Add potassium tert-butoxide (1.30 g, 11.7 mmol) and stir until
dissolved. Add cyclopropyl bromide (2.6 mL, 31.8 mmol) and heat the reaction to 80 °C
for 2 days. Cool to room temperature and pour the reaction into water (500 mL), Extract
the aqueous layer with Et2O (2 x 200 mL) and wash the combined organic layers with
water (100 mL). Dry over sodium sulfate and concentrate in vacuo. Chromatograph the
residue on a SiO2 column eluting the material with bexanes to give 1.73 g of l-bromo-4-
cyclopropylsulfanyl-benzene (72%).
Dissolve l-bromo-4-cyclopropylsulfanyl-benzene (1.73 g, 7.55 mmol) in dry
methylene chloride (75 mL). Slowly add mCPBA (4.8 g, 18.8 mmol, 68%) in portions to
control a mild exotherm. After stirring for 1 hour, filter the resultant precipitate. Wash
the filtrate with 1N NaOH (50 mL) and dry the organic layer with sodium sulfate.
Concentrate in vacuo to yleld 2.0 g of 1-bromo-4-cyclopropanesulfonyl-benzene (100%).
Dissolve l-bromo-4-cyclopropanesu]fonyl-benzene(500mg, 1.91 mmol),
bis(pinacolato)diboron (577 mg, 2.29 mmol), potassium acetate (513 mg, 5.70 mmol) and
PdCl2(dppf)-CH2Cl2 (46 mg, 0.057 mmol) in dry DMSO (10 mL) under a nitrogen
atmosphere. Heat the mixture to 80°C for four hours. Cool the reaction to room
temperature and pour into water (100 mL). Extract the aqueous phase with Et2O (2 x 50
mL) and wash the combined organic layers with water (50 mL). Dry over sodium sulfate
and concentrate in vacuo. Chromatograph the residue on a SiO2 column eluting the
material with EtOAc in hexanes (10 to 40%) to give 200 mg of the title compound (34%).


Combine 2-(4-cyclopropanesulfonyl-phenyl)-4,5,5-tetramethyl-
[1,3,2]dioxaborolane (200 mg, 0.65 mmol), the compound of Preparation 1 (150 mg, 0.28
mmol) and cesium fluoride (214 mg, 1.4 mmol) in dried flask fitted with a reflux
condenser. In a separate flask combine palladium (II) acetate (6.2 mg, 0.028 mmol) and
tricyclohexylphosphine (11.7 mg, 0.042 mmol). Add acetonitrile (3.0 mL) and sonicate
for 10 minutes under nitrogen. Add the catalyst solution to the solids and heat in an 80°C
oil bath for 20 minutes. Cool the suspension to room temperature and filter through
packed celite. Rinse the celite with acetonitrile and evaporate. Chromatograph the
residue on a SiO2 column eluting the material with methanol in dichloromethane (0 to
5%) to give 120 mg of the title compound (77%). Mass spectrum (ion spray): m/z =
558.3 (M+H).
Example 103
6-(4-Cyclopropanesulfonyl-phenyl)-5-[4-(2-piperidin-1-yl-ethoxy)-phenoxy]-naphtha3en-
2-ol Hydrochloride
Dissolve 1-(4-(2-(piperidin-1-yl)ethoxy)phenoxy)-2-(4-
cyclopropanesulfonylphenyl)-6-methoxy-naphthalene (120 mg, 0.21 mmol) in methylene
chloride (2 mL) and add 2M HCl in Et2O (210 uL, 0.42 mmol) and concentrate. Dissolve
the resultant foam in dry methylene chloride (3 mL) and cool to 0°C under nitrogen. Add
BBr3 (99 μL, 1.05 mmol) dropwise and stir for 20 minutes. Pour the reaction into
saturated sodium bicarbonate (10 mL) and extract with methylene chloride (2x10 mL).

Dry the combined organic layers with sodium sulfate and concentrate to a yellow solid.
Chromatograph the residue on a SiO2 column eluting the material with methanol in
dichloromethane (2 to 10%) to give 99 mg of the free base of the title compound (87%).
Dissolve the free base in methylene chloride and add 2M HCl in Et2O (200 μL, 0.40
mmol). Evaporate the solvent and dry at 45°C ( of the title compound (69%): Mass spectrum (ion spray): m/z = 544.3 (M+H-HCl).
Preparation 32
4-Bromo-3-(4-methanesulfonyl-phenyl)-7-methoxy-1,2-dihydro-naphthalene
Add 6-mcthoxytetralone (1.0 eq.), 4-bromophenyl-methyl-sulfone (1.02 eq.),
Pd(OAc)2 (0.025 eq.), DPEphos ligand [(Oxydi-2,l-phenylene) bis(diphenylphosphine)]
(0.026 eq.) and toluene (12 vols) to a three-neck flask equipped with a reflux condenser
and nitrogen vent purge. Then add sodium t-butoxide (2.5 eq.) in one portion. The
reaction mixture exotherms to approximately 40°C and forms a heterogeneous yellow
mixture. Heat the heterogeneous yellow reaction mixture to 75°-80°C for 1-2 hours. Cool
the yellow slurry to room temperature and slowly quench the reaction with water (12
vols), keeping the temperature below 40°C. Cool the aqueous slurry to room temperature
and stir for 2 to 3 hours. Filter the slurry over polypropylene and wash the solids with
water (3x2 vols). Dry the resulting filter cake in a vacuum overnight at 50° C to provide
crude 2-(4-rnethanesulfonyl-phenyl)-6-methoxy-3,4-dihydro-2H-naphthalen-1-one (91%).
Add 2-(4-methanesulfonyl-phenyl)-6-methoxy-3,4-dihydro-2H-naphthalen-1-one
(1.0 eq.), hyflo (20 wt%), and toluene (7.5 vols) to a three neck flask with a reflux
condenser and nitrogen vent purge. While stirring at room.temperature, add PBr3 (1.75
eq.) in one portion. Heat the reaction to reflux (~110° C) overnight allowing it to vent
through a caustic scrubber. After refluxing for 15 hours, cool the yellow solution to 45°C
and slowly add THF (20 vols). Stir this mixture for 30 minutes at 45° and filter it, while
warm, over a pad of Hyflo. Wash the pad with 45°C THF (2x2 vols). Concentrate the
filtrate at reduced pressure to remove all of the THF. Carefully add water (7.5 vols) to the
remaining mixture keeping the temperature below 40°C. Cool the slurry to room
temperature and stir it for 2 to 3 hours. Filter the slurry over a polypropylene pad and

wash it with water (2x2 vols). Dry the resulting filter cake in a vacuum oven overnight at
50°C to provide the title compound (74%).

Place the compound of preparation 32 (1.0 eq.), 4-(2-piperidinylethoxy)phenol
(1.5 eq.), Cs2CO3 (2.5 eq.) and CuCl (0.2 eq.) into a RB flask equipped with magnetic
stirrer and condenser. Add toluene (7.5 vols) and de-gas the reaction mixture by vacuum
and nitrogen alternation four times. Heat the reaction to reflux for 4—5 hours. Then cool
the reaction to ambient temperature and pour it into a mixture of concentrated ammonia
solution (1.0 vols), 1N NaOH (5.0 vols), and ethyl acetate (7.5 vols). Vigorously shake
the mixture and after the layers separate, discard the aqueous layer and wash the organic
layer again with a mixture of ammonia (1.0 vols) and 1N NaOH (5.0 vols), brine (5.0
vols). Dry the organic layer over MgSO4, and then concentrate it. Dissolve the resulting
solid in acetone (2.0 vols) and add hexanes (3.0 vols) as the anti-solvent. After allowing
this mixture to stand for 1~2 hours, collect the precipitated material by filtration and allow
it to dry, to provide the title compound (80%). MS (ES+) m/e 534 (M + H)+.

Example 105
6-(4-Methanesulfonyl-phenyl)-5-[4-(2-piperidin-1 -yl-ethoxy)-phenoxy]-7,8-dihydro-
naphthalen-2-ol
In a round bottom flask place the compound of Example 104 (50 mg, 0.094
mmol), sodium emanethiolate (88 mg, 1.05 mmol) and dimethylformamide (4 mL) in a
round bottom flask, at room temperature. Place the reaction in a 95°C oil bath and stir it
for 4 hours, then cool it to ambient temperature. Quench the room temperature mixture
with brine and extract it into ethyl acetate. Wash the combined extracts with brine; then
dry (sodium sulfate) and concentrate them in vacuo. Purify the crude material on a
Chromatotron (sihca gel; 5%-12% MeOH gradient in CH2Cl2) to give 7 mg of the title
compound (14%). MS (IS+) m/e 520 (M + 1).
Preparation 33
1-Bromo-2-(4-methanesulfonylphenyl)-6-methoxynaphthalene
To a 3-neck flask equipped with a reflux condenser and nitrogen vent purge, add
6-methoxytetralone (1.0 eq.), 4-bromopbenyl-methyl-sulfone (1.02-1.05 eq.), Pd(OAc)2
(0.025 eq.), DPEphos ligand (0.026 eq.) and toluene 10-12 volumes. Add sodium t-
butoxide (2.5 eq.) in one portion and allow mixture to exotherm to ~40°C. Heat to 75° to
80° C. Upon the reaction completion, as judged by HPLC analysis, cool to room
temperature. Add 12 volumes water slowly keeping the temperature hours. Filter over polypropylene pad and wash with water (3x2 volumes). Dry the filter
cake overnight at 50° C to give 2-(4-methanesulfonylphenyl)-6-methoxytetralone.
Combine 2-(4-methanesulfonylphenyl)-6-methoxytetralone (1.0 eq.), hyflo
(20%/weight), and toluene (7.5 volumes). Add PBr3 (1.5-1.75 eq.) in one portion while
stirring at room temperature. Heat contents to reflux (-110° C) overnight Upon reaction
completion, as judged by HPLC analysis (usually 15 hours), cool solution to 45°C and
slowly add 20 volumes THF. Stir for 30 minutes at 45° and filter warm over a pad of
hyflo. The pad is washed with 2x2 volumes THF at 45° C. Concentrate filtrate to
approximately 7 volumes. Add 7.5 volumes water to the remaining mixture keeping the
temperature below 40° C. (NOTE: initial addition of water is very exothermic with large

evolution of HBr). Cool slurry to room temperature and stir for 2 to 3 hours. Filter over a
polypropylene pad and wash with 2x2 volumes water. Dry filter cake overnight at 60°C
under vacuum to give 1-bromo-2-(4-methanesulfonylphenyl)-3,4-dihydro-6-
methoxynaphthalene.
Combine 1-bromo-2-(4-methanesulfonylphenyl)-3,4-dihydro-6-
methoxynaphthalene and 2,3-dichloro-5,6-dicyano-l,4-benzoquinone (DDQ, 1.8 equiv.).
in 10 volumes acetonitrile and 5 volumes of THF. Under nitrogen atmosphere, heat
reaction contents to 73-75°C. Monitor reaction progress by GC analysis until reaction
completion. Additional DDQ (0.2-0.3 equiv.) may be required for reaction completion.
Cool contents to ambient temperature and add 10 volumes 1N sodium hydroxide. Stir for
approximately 1 hour and filter. Rinse filter cake with 2 volumes water, 3x5 volumes
50% acetonitrile/water and finally 3 volumes methanol. Vacuum dry the filter cake at
65°C to give the title compound.
Alternative Preparation of the compound of Example 2
Charge 1-bromo-2-(4-methanesulfonylphenyl)-6-methoxynaphthalene, 4-(2-
piperidinylethoxy)phenol (2.0 equiv), cesium carbonate (2.0-2.1 equiv.) and copper
chloride (0.15 equiv.) to 12 volumes of diglyme. Evacuate flask for ~ 2 minutes, then
purge with nitrogen. Repeat evacuation/nitrogen purge 3 times. Heat the contents to
130°C until reaction completion as judged by HPLC analysis. Upon reaction completion,
cool contents to near ambient temperature and add 12 volumes of ammonium hydroxide
and stir for approximately 30 minutes. Filter to remove solids and wash solids with 9
volumes, of 30% MeOH/NH4OH, slurrylng the solids on the filter support. Wash solids
with 2 X 9 volumes of 30% NH4OH/MeOH, slurrylng solids on filter support. Wash with
4 volumes methanol. Vacuum dry filter cake at 60°C to give the free base of the title
compound. Slurry the free base in 9 volumes of toluene and heat the slurry to 70-75°C.
Dissolve 1.1 equivalents of hydrogen chloride gas in 2 volumes of ethanol. Add the
ethanolic HCl solution to the hot toluene slurry. Cool solution to ambient temperature
and stir 1-2 hours. Filter and wash with a small amount of toluene. Vacuum dry the filter
cake at 65°C to give the title compound.

Alternative Preparation of the compound of Example 4
Combine 1 -(2- {4-[2-(4-methanesulfonyl-phenyl)-6-methoxy-naphthalen-1-yloxy]-
phenoxy}-ethyl)-piperidine liydrochloride with 5 volumes 1,2-dichloroethane (DCE) and
cool the mixture to trichloride. Stir at ambient temperature until reaction is complete, as judged by HPLC
analysis. Quench reaction contents into 5.6 volumes 3A-ethanol (ethanol denatured with
about 5% methanol) keeping the contents for 1 -3 hours. Filter the solids and rinse the filter cake with 3A-ethanol. Vacuum dry the
filter cake at 65°C to give the title compound. This material may optionally be further
purified by dissolving the isolated product in 9.8 volumes of 3A ethanol and 1.5 volumes
of deionized water at about the reflux temperature of the mixture. Allow the solution to
reflux for approx 30 minutes then allow the mixture to cool to ambient temperature.
Once at ambient temperature, allow the resultant slurry to stir for 1-2 hours at ambient
temperature, then filter and rinse the filter cake with 3A ethanol. This material may
optionally be further purified by dissolving the filter cake in 19 volumes of acetonitrile
and 1.4 volumes of deionized water at reflux: Azeotropically remove the water by
distillation until a total of 12.1 volumes of distillate are removed. Cool the resulting
slurry to ambient temperature, filter and rinse the filter cake with acetonitrile.
Formulation (Pharmaceutical Composition)
Because the compound of formula I contains a basic moiety (i.e., amino), said
compound may be formulated as a pharmaceutical acid addition salt, e.g., as the
hydrochloride salt or as a salt described in, "Handbook of Pharmaceutical Salts:
Properties, Selection and Use", Weinheim, New York: VHCA; Wiley-VCH, 2002. The
compound of formula I, or a pharmaceutical acid addition salt thereof, is preferably
formulated in a dosage unit form, i.e., in an individual delivery vehicle, for example, a
tablet or capsule, prior to administration to the recipient patient. The term "patient"
includes female humans and non-human female animals such as companion animals
(dogs, cats, horses and the like). The preferred patient of treatment is a female human.
Another preferred patient of treatment is a pre-menopausal female human.

The present pharmaceutical compositions are prepared by known procedures using
well-known and readily available ingredients. In making the formulations of the present
invention, the active ingredient (a formula I compound, or a pharmaceutical salt thereof)
will usually be mixed with a carrier, or diluted by a carrier, or enclosed within a carrier
which may be in the form of a capsule, sachet, paper or other container. When the carrier
serves as a diluent, it may be a solid, semisolid or liquid material that acts as a vehicle,
excipient or medium for the active ingredient. Thus, the compositions can be in the form
of tablets, pills, powders, lozenges, sachets, cachets, elixirs, suspensions, emulsions,
solutions, syrups, aerosol (as a solid or in a liquid medium), soft and hard gelatin
capsules, suppositories, sterile injectable solutions and sterile packaged powders.
Some examples of suitable carriers, excipients, and diluents include lactose,
dextrose, sucrose, sorbitol, mannitol, starches, gum acacia, calcium phosphate, alginates,
tragacanth, gelatin, calcium silicate, microcrystalline cellulose, polyvinylpyrrolidone,
cellulose, water syrup, methyl cellulose, methyl and propylhydroxybehzoates, talc,
magnesium stearate and mineral oil. The formulations can additionally include
lubricating agents, wetting agents, e.g., polysorbate 80 or lauryl sulfate, emulsifylng and
suspending agents, preserving agents, sweetening agents or flavoring agents. The
compositions of the invention may be formulated so as to provide quick, sustained or
delayed release of the active ingredient after administration to the recipient patient.
Formulation Examples
10 mg Capsules or Tablets
Add about 156 mg of a bulking agent (lactose, mannitol, or dextrose), about 20
mg of a dismtegrant (microcrystalline cellulose, or starch), about 4 mg of a super
disintegrant (crospovidone, or sodium starch glycollate) about 4 mg of a binder (hydroxy
propyl methyl cellulose or hydroxy propyl cellulose) and about 10 mg of the active
ingredient (e.g., the compound of Example 4) to a granulator and mix to uniformly
distribute the powders. Spray an aqueous granulation solution consisting of povidone,
hydroxy propyl methyl cellulose, or hydroxy propyl cellulose (sufficient to deliver about
2-4% by weight of dry powders) and wetting agent such as polysorbate 80 or sodium
lauryl sulfate (sufficient to deliver between 0.5 and 3% by weight) at a uniform rate onto

the powders while mixing. Wet sieve the granulated material through a screen to disrupt
large agglomerates. Dry the filtered granulated powder by either fluid bed processing or
in a convection oven. Reduce the dried granulated powder to a uniform size by passing
through a co-mill or other suitable apparatus and then transfer the material to a mixer.
Uniformly blend the granulated powder with a lubricant (magnesium stearate, or sodium
stearyl fumurate at about 1% by weight of the total formulation) and additional
disintegrant (about 2 - 4% by weight in the outside powders). Fill the finished powders
into hard gelatin capsules or compress said powder into tablets (followed by film coating
the tablets as described below). The total weight of a capsule or tablet prepared in this
manner is about 200 mg.
45 mg Capsules or Tablets
Add about 162 mg of a bulking agent (lactose, mannitol or starch), about 10 mg of
a disintegrant (crospovidone or sodium starch glycollate), and about 45 mg of the active
ingredient (e.g., the compound of Example 4) to a granulator and mix to uniformly
distribute the powders. Spray an aqueous granulation solution consisting of povidone
(about 35% by weight) and polysorbate 80 (about 10% by weight) at a uniform rate onto
the powders while mixing. Wet sieve the granulated material through a screen to disrupt
large agglomerates. Dry the filtered granulated powder by either fluid bed processing or
in a convection oven. Pass the dried granulated powder through a co-mill or other
suitable apparatus and then transfer the material to a mixer. Uniformly blend the
granulated powder with a lubricant (magnesium stearate; about 1% by weight of the total
formulation) and additional disintegrant (about 2% in the outside powders). Fill the
finished powders into hard gelatin capsules or compress said powder into tablets
(followed by film coating the tablets as described below). The total weight of a capsule or
tablet prepared in this manner is about 230 mg.
Alternatively, to prepare a tablet, add the bulking agent, disintegrant, and the
active ingredient to a mixer and blend to uniformly distribute the powders. Once the
powders are uniformly distributed, add the lubricant and blend again. Transfer the
blended material to a tablet compression machine to prepare the tablets which are
subsequently film coated with an appropriate film forming agent.

Biological Assays
Estrogen Receptor Binding Assay: Representative compounds of the present
invention are screened for binding affinity to both estrogen receptor types (ERα and ERβ).
This competition binding assay measures the compound's ability to displace 3H-estradiol
and generates IC50 and Ki values for both receptor types.
This competition binding assay is run in a buffer containing 50mM Hepes, pH 7.5,
1.5mM EDTA, 150mM NaCl, 10% glycerol, 1mg/mL ovalbumin and 5mM DTT, using
0.025 μCi per well 3H-Estradiol (NEN #NET517 at 118 Ci/mmol, 1 mCi/mL), 10 ng/well
ERa or ERP receptor (PanVera). A compound of the present invention is added at 10
different concentrations. Non-specific binding is determined in the presence of 1 μM of
17-β Estradiol. The binding reaction (140 μl) is incubated for 4 hours at room
temperature, then 70 ul of cold DCC buffer is added to each reaction (DCC buffer
contains per 50 mL of assay buffer, 750 mg of charcoal (Sigma) and 250 mg of dextran
(Pharmacia)). Plates are mixed 8 minutes on an orbital shaker at 4°C. Plates are then
centrifuged at 3,000 rpm at 4°C for 10 minutes. An aliquot of 120 ui of the mix is
transferred to another 96-well, white flat bottom plate (Costar) and 175 ui of Wallac
Optiphase "Hisafe 3" scintillation fluid is added to each well. Plates are sealed and
shaken vigorously on an orbital shaker. After an incubation of 2.5 hours, the plates are
read in a Wallac Microbeta counter. The data is used to calculate an IC50 and %
Inhibition at 10 μM. The Kd for 3H-Estradiol is determined by saturation binding to ERα
and ERβ receptors. The IC50 values for test compounds are converted to Kj using Cheng-
Prusoff equation and the K4 determined by saturation binding assay.
Ishikawa Cell Proliferation Assay: This assay measures cell proliferation (using
an alkaline phosphatase readout) in both an agonist mode in the presence of a compound
of the present invention alone, and in an antagonist mode in which the ability of a
compound of the present invention to block estradiol stimulation of growth is measured.
Ishikawa human endometrial tumor cells are maintained in MEM (minimum
essential medium, with Earle's salts and L-Glutamine, Gibco BRL, Gaithersburg, MD),
supplemented with 10% fetal bovine serum (FBS) (V/V), (Gibco BRL). One day prior to
assay, growth media is changed to assay medium, DMEM/F-12 (3:1) (Dulbecco's

Modified Eagle Medium: Nutrient Mixture F-12, 3:1 Mixture, phenol red-free, Gibco
BRL) supplemented with 5% dextran coated charcoal stripped fetal bovine serum (DCC-
FBS) (Hyclone, Logen, UT), L-Glutamine (2mM), MEM sodium pyruvate (1 mM),
HEPES (N-p-hydroxyethyl]piperazine-N' - [2-ethanesulfonic acid] 2 mM) all from
Gibco BRL). After an overnight incubation, Ishikawa cells are rinsed with Dulbecco's
Phosphate Buffered Saline (1X) (D-PBS) without Ca+2 and Mg+2 (Gibco BRL), and
trypsinized by a 3 minute incubation with 0.25% Trypsin/EDTA, phenol red-free (Gibco
BRL). Cells are resuspended in assay medium and adjusted to 250,000 cells/mL.
Approximately 25,000 cells in a 1 OOul media are added to flat-bottom 96 wells
microculture plates (Costar 3596) and incubated at 37'C in a 5% CO2 humidified
incubator for 24 hours. The next day, serial dilutions of compounds are prepared in assay
medium (at 6 times the final concentration in the assay). The assay is run in dual mode,
agonist and antagonist modes.
For the agonist mode, plates receive 25 μl/well of assay medium followed by 25
μl/well of a diluted compound of the present invention (at 6x the final concentrations).
For the antagonist mode, plates receive 25 |d/well of 6 nM E2 (p-Estradiol, Sigma, St.
Louis, MO) followed by 25 ul/well of a diluted compound of the present invention (at 6x
the final concentrations). After an additional 48-hour incubation at 37ºC in a 5% CO2
humidified incubator, media is aspirated from wells and 100 μl fresh assay medium is
added to each microculture. Serial dilutions of compounds are prepared and added to the
cells as described above. After an additional 72 hour incubation at 37'C in a 5% CO2
humidified incubator, the assay is quenched by removing media and rinsing plates twice
in Dulbecco's Phosphate Buffered Saline (IX) (D-PBS) (Gibco BRL). The plates are
dried for 5 minutes and frozen at -70°C for at least 1 hour. The plates are then removed
from the freezer and allowed to thaw at room temperature. To each well, 100 μl of 1-
Step™ PNPP (Pierce Chemical Company, Rockford, DL) is added. After a 20-minute
incubation, plates are read on a spectophotometer at 405nm.
The data is fitted to a linear interpolation to derive EC50 (for agonist mode) or
IC50 (for antagonist mode) values. For the antagonist mode, a % efficacy for each
compound is calculated versus E2 (1nM) alone. For the agonist mode, a % efficacy for
each compound is calculated versus the response to tamoxifen.

In the agonist mode, the compounds of Examples 3-6, 8,10,12,14,16,18,21,23,
25,27, 29, 32, 34,36,39, 43,46,49, 53,56, 58, 59, 61,63, 65,67,70-73, 75, 78,80, 82,
86, 89, 92, 94, 97,99,101,103 and 105 were tested and were found to be less stimulatory
than tamoxifen. For example, the compound of Example 56 had a relative % efficacy of
71.8%. In the antagonist mode, these same compounds inhibited greater than at least 70%
of the 1nM estradiol response. For example, the compound of Example 16 had an IC50
of 35.2 nM and a % efficacy of 106.7%.
MCF-7 Proliferation Assay- The MCF-7 cell line was derived from a human
breast adenocarcinoma and is used as an indicator of potential antiproliferative activity in
breast epithelium.
MCF-7 breast adenocarcinoma cells (ATCC HTB 22) are maintained in MEM
(minimal essential medium, phenol red-free, Gibco BRL) supplemented with 10% fetal
bovine serum (FBS) (V/V), L-glutamine (2 mM), sodium pyruvate (1 mM), HEPES ((N-
[2-hydroxyethyl]piperazine-N'-[2-ethanesulfonic acid]10 mM}, non-essential amino
acids(0.1mM)and Penicillin Streptomycin(lX). Seven days prior to assay, MCF-7 cells
are switched to assay media which is the same as maintenance medium except
supplemented with 10% dextran-coated charcoal-stripped fetal bovine serum (DCC-FBS)
assay medium in place of 10% FBS. MCF-7 cells are removed from flasks using 1 OX
Trypsin EDTA (phenol red free, Gibco BRL) and diluted to IX in (Ca++/Mg++ free
HBSS (phenol red-free). Cells are adjusted to 80,000 cells/mL in assay medium.
Approximately 8,000 cells (100 μl) are added to each well in 96 well Cytostar T
scintillation plates (Amersham) and incubated at 37°C in a 5% CO2 humidified incubator
for 24 hours to allow cell adherence and equilibration after transfer.
Serial dilutions of a compound of the present invention are prepared in assay
medium at 4x the final desired concentration). A 50 μl aliquot of test compound dilutions
(at 4x the final assay concentration) is transferred to duplicate wells followed by 50 μl .
assay medium for the agonist mode or 50 μl of 40pM of E2 for the antagonist mode to a
final volume of 200 μl. For each of the agonist plates, a basal level (media) and a
maximum stimulated level (with 1μM E2) is determined. For each of the antagonist
plates, a basal level (media) and an E2 (10pM) alone control is determined. After an

additional 48 hours at 37°C in a 5% CO2 humidified incubator, 20μl of assay medium
containing 0.01 μCi of 14C-thymidine (52 mCi/mmol, 50 μCi/μl, Amersham) is added to
each well. The plates are incubated overnight in the same incubator and men counted on
the Wallac Microbeta counter. The data is averaged to calculate an IC50 and % inhibition
@ 1μM for the antagonist mode. For the agonist mode, an ECSO and percent of
maximum E2 stimulation and concentration of maximum stimulation is calculated.
3-Day Rat Uterus Antagonist Assay: This model for uterine antagonism utilizes
immature (3 week old) female rats that are highly sensitive to estrogenic stimulation of
the uterus given that their circulating estrogen levels are prepubertal. The uteri from
immature rats are fully responsive to exogenous estrogen, yet are quiescent in the absence
of exogenous estrogen. Administration of exogenous estrogen to immature rats produces
a reliable elevation of uterine weight, which can be used to study uterine antagonist
effects. The rats are treated with both estradiol and 4 different concentrations of a
compound of the present invention for 3 days and then uterine wet weights are measured.
Nineteen to twenty-one day old (or 45-50g) female rats are orally treated with E2
(0.1 mg/kg, a maximal stimulatory estrogenic stimulus for reliably increasing uterine
weight) and 10,1.0, 0.1 and 0.01 mg/kg test compound for 3 days, 6 rats per group. Test
compounds are dissolved in 20% β-hydroxycyclodextrin and administered by oral gavage
in a volume of 0.2 mL daily (15 min. prior to the ethynyl estradiol gavage). A vehicle
control, E2 alone and £2 + raloxifene are also done as controls. The animals are fasted
overnight following the final dose. On the following morning, the animals are weighed,
then euthanized (by carbon dioxide asphyxiation) and the uteri rapidly collected (via a
mid-line ventral incision) and weighed.
Uterine weight/body weight ratios (UWR) are calculated for each animal. The
percent inhibition of the estrogen-induced response is then calculated by the following
formula: percent inhibition = 100 x (UWRestrogen - UWRtest compound-/UWRestrogen
- UWRcontrol)- ED50 values are derived from a semi-log regression analysis of the
linear aspect of the dose response curve. Both the UWR data and the percent inhibition
data were statistically analyzed by one way analysis of variance (ANOVA) with post-hoc

testing by Fisher's PLSD when indicated by a p ≤0.05. Statistical analyses are performed
using the Statview® 4.0 software package.
The compounds of Examples 4-6,12,14,18, 21,23,27,29,32, 34,39,43,46, 53,
56, 58, 59, 61,65,70, 78, 86, 89,92, 99,101 and 103 were tested in the above assay and
were found to inhibit the estrogen-induced response when administered at 1.0 mg/kg. For
example, the compound of Example 92 had an ED50 of 0.53 mpk and a % antagonism of
62.7%.
4-Day OVXRat Uterine Agonist Assay. In order to assure that a test compound
does not have any partial uterine agonist activity, compounds are administered to mature,
ovariectomized rats.
Seventy-five day old rats are ovariectomized and treatment is started 14 days later
when circulating estradiol levels have reached minimal levels. After 4 days of treatment
with 3 doses of a compound of the present invention, (6 rats per group) body weight,
uterine wet weight and uterine eosinophil peroxidase (EPO) activity are measured.
Cholesterol levels are also measured to compare relative ability to lower cholesterol with
other SERMs. If there is any question of uterine stimulation, histological examination
will determine epithelial cell height.
The compounds of Examples 4 and 14 were tested in the above assay and did not
cause dose-related statistically significant increases in EPO activity.
10-Day Rat Hormone (Ovarian Stimulation) Screen: An initial, first screen for
ovarian toxicity is conducted using a 10-day rat hormone study to measure estradiol and
luteinizing hormone levels after compound administration. This screen is conducted by
administering compound by oral gavage for 10 days to mature (9-10 week old) F344
female rats. Trunk blood is collected by rapid decapitation for evaluation of LH and
estradiol levels approximately 2 hours after the 10th dose. Serum, obtained by
centrifugation, is removed and stored frozen below -60°C until assayed. Serum levels of
LH and estradiol are measured using radioimmunoassay (RIA) methods.
Rat LH primary antibody and reference preparations (rat LH:RP-3) were obtained
from Dr. A. F. Parlow, Director, Pituitary Hormones and Antisera Center, Harbor-UCLA

Medical Center, Torrance, CA. The LH assay upper limits of detection were 30 ng/mL
and the lower limits of detection were 0.1 ng/mL for the 100 pi samples.
E2 Clinical Assays. DiaSorin s.r.l., Saluggia (Vercelli), Italy. The upper limit of
detection was 1000 pg/mL and the lower limit of detection was 5 pg/mL.
The compounds of Examples 4-6, 14, 21 and 103 were tested in the above assay
and did not significantly elevate circulating estradiol or LH levels.
35-Day Ovary-Intact Rat Bone Assay: While previous SERMs, including
raloxifene have shown efficacy in preventing bone loss in OVX rats, the possibility of
interference with estrogen-regulated turnover in ovary-intact rats needs to be addressed.
This assay is done in mature rats with concentrations based on the demonstrated
efficacy in the 3-day assay. Generally, at least three concentrations are chosen based on
multiples of the ED50 generated therein. These multiples are generally 1x, 10x and 30x
the ED50. A compound of the present invention is administered to an OVX rat for 35
days and is compared to control, ovariectomized, and/or GnRH-administered rats.
Femurs, tibiae, uteri, ovaries and serum are taken for further analyses. DEXA (Dual
Energy X-ray Absorptivity), CT (Computed Tomography) and histologic analysis are
done on the long bones to assess any changes. CT scans of the distal femur are done to
calculate BMD (bone mineral density), cross sectional area and BMC (bone mineral
content). Bone strength measurements (load to failure) may also be done to determine
consequences of any bone mass or material changes. Uterine and ovarian histology are
examined to confirm long term dosing effects of uterine efficacy and potential ovarian
stimulation. The serum is analyzed for LH and E2 levels as a possible indicator of
ovarian effects.
Utilities
As an antagonist of estrogen in breast and uterine tissue, the compound of formula
I, or a pharmaceutical acid addition salt thereof, is useful in treating conditions in which
estrogen has been demonstrated to play a causal role therein. As an agonist of estrogen in
skeletal and cardiovascular systems, the compound of formula I, or a pharmaceutical acid
addition salt thereof, is useful in treating conditions in which estrogen has been
demonstrated to play a beneficial role therein.

The terms "treating" and "treat" as used herein, include their generally accepted
meanings, i.e., alleviating, ameliorating, managing, preventing, prohibiting, restraining,
slowing, stopping, or reversing the progression or severity of a pathological condition, or
sequela thereof, described herein. The term "preventing" refers to reducing the likelihood
that the recipient of a compound of formula I, or a pharmaceutical acid addition salt
thereof, will incur or develop any of the pathological conditions, or sequela thereof,
described herein.
The diseases, disorders or conditions for which a compound of formula I. or a
pharmaceutical acid addition salt thereof, is useful in treating include; but are not limited
to, (1) uterine and/or breast cancer, (2) endometriosis; (3) treatment and management of
uterine leiomyoma/leiomyomata and associated symptoms; and (4) osteoporosis.
Treatment of uterine leiomyoma/leiomyomata as described herein, may also reduce
associated symptoms such as pain, urinary frequency, and uterine bleeding..
Dose
As used herein, the term "effective amount" means an amount of a compound of
formula I, or a pharmaceutical acid addition salt thereof, that is capable of treating
conditions, or detrimental effects thereof, described herein.
The specific dose administered is determined by the particular circumstances
surrounding each situation. These circumstances include, the route of administration, the
prior medical history of the recipient, the pathological condition or symptom being
treated, the severity of the condition/symptom being treated, and the age and sex of the
recipient. The recipient patient's physician should determine the therapeutic dose
administered in light of the relevant circumstances.
Generally, an effective minimum daily dose of a compound of the present
invention will exceed about 5 mg. Typically, an effective maximum daily dose will not
exceed about 350 mg. The exact dose may be determined, in accordance with the
standard practice in the medical arts of "dose titrating" the recipient; that is, initially
administering a low dose of the compound, and gradually increasing the dose until the
desired therapeutic effect is observed.

Route of Administration
A compound of formula I, or a pharmaceutical acid addition salt thereof, may be
administered by a variety of routes including the intramuscular, intranasal, intravaginal,
intravenous, oral, rectal, subcutaneous, topical and transdermal routes. A preferred route
of administration is the oral route.
Combination Therapy
The compound of formula I, or a pharmaceutical acid addition salt thereof, may be
used in combination with other drugs that are used in the treatment of the diseases or
conditions for which these compounds are useful. Such other drug(s) may be
administered, by a route and in an amount commonly used therefore, contemporaneously
or sequentially with a salt of the present invention. When a compound of the present
invention is used contemporaneously with one or more other drugs, a pharmaceutical unit
dosage form containing such other drugs in addition to the present compound is preferred.
Accordingly, the pharmaceutical compositions of the present invention include those that
contain one or more other active ingredients. One example of another other active
ingredient that may be combined with a compound of the present invention, either
administered separately or in the same pharmaceutical composition, includes agents
employed in hormone replacement therapy (HRT).

We Claim:
1. A selective estrogen receptor modulators compound containing
phenylsulfonyl group of Formula I:

Wherein:
R1 is methyl, ethyl, cyclopropyl or CF3

or a pharmaceutical acid addition salt thereof.
2. A compound as claimed in claim 1, wherein the compound is

or a pharmaceutical acid addition salt thereof.
A compound as claimed in claim 1, wherein the compound is


or a pharmaceutical acid addition salt thereof.
4. A compound as claimed in claim 1, wherein the compound is

or a pharmaceutical acid addition salt thereof.
5. A compound as claimed in claim 1, wherein the compound is

or a pharmaceutical acid addition salt thereof.
6. A compound as claimed in claim 1, wherein the compound is

or a pharmaceutical acid addition salt thereof.

7. A compound as claimed in claim 1, wherein the compound is

or a pharmaceutical acid addition salt thereof.
8. A compound as claimed in any one or' claims 1-7 which is the hydrochloride
salt.
9. A compound as claimed in any one of claims 1-8, or a pharmaceutical acid
addition salt thereof, used in treating endometriosis and uterine leiomyoma.

The present invention relates to a selective estrogen receptor modulator compound
containing phenylsulfonyl group formula I:

or a pharmaceutical acid addition salt thereof; useful, e.g., for treating endometriosis
and/or uterine leiomyoma/leiomyomata.

Documents:

00071-kolnp-2005 abstract.pdf

00071-kolnp-2005 claims.pdf

00071-kolnp-2005 correspondence-1.pdf

00071-kolnp-2005 correspondence-2.pdf

00071-kolnp-2005 correspondence-3.pdf

00071-kolnp-2005 description(complete).pdf

00071-kolnp-2005 form-1.pdf

00071-kolnp-2005 form-13.pdf

00071-kolnp-2005 form-18.pdf

00071-kolnp-2005 form-2.pdf

00071-kolnp-2005 form-26.pdf

00071-kolnp-2005 form-3.pdf

00071-kolnp-2005 gpa.pdf

00071-kolnp-2005 international publication.pdf

00071-kolnp-2005 international search authority report.pdf

00071-kolnp-2005 others.pdf

00071-kolnp-2005 pct demand form.pdf

00071-kolnp-2005 pct request form.pdf

71-KOLNP-2005-CORRESPONDENCE-1.4.pdf

71-kolnp-2005-granted-abstract.pdf

71-kolnp-2005-granted-assignment.pdf

71-kolnp-2005-granted-claims.pdf

71-kolnp-2005-granted-correspondence.pdf

71-kolnp-2005-granted-description (complete).pdf

71-kolnp-2005-granted-examination report.pdf

71-kolnp-2005-granted-form 1.pdf

71-kolnp-2005-granted-form 13.pdf

71-kolnp-2005-granted-form 18.pdf

71-kolnp-2005-granted-form 2.pdf

71-kolnp-2005-granted-form 26.pdf

71-kolnp-2005-granted-form 3.pdf

71-kolnp-2005-granted-form 5.pdf

71-kolnp-2005-granted-gpa.pdf

71-kolnp-2005-granted-reply to examination report.pdf

71-kolnp-2005-granted-specification.pdf

71-KOLNP-2005-PA.pdf


Patent Number 225991
Indian Patent Application Number 71/KOLNP/2005
PG Journal Number 49/2008
Publication Date 05-Dec-2008
Grant Date 03-Dec-2008
Date of Filing 20-Jan-2005
Name of Patentee ELI LILLY AND COMPANY
Applicant Address LILLY CORPORATE CENTER,CITY OF INDIANAPOLIS, STATE OF INDIANA
Inventors:
# Inventor's Name Inventor's Address
1 DODGE, JEFFREY, ALAN 7110 LANTERN ROAD INDIANAPOLIS,INDIANA 46256
2 FRANK, SCOTT, ALAN 5421 CRANLEY CIRCLE INDIANAPOLIS,INDIANA 46220
3 WALLACE, OWEN, BRENDAN 4341 CHASE CIRCLE, ZIONSVILLE, INDIANA 46077
4 FONG, KIN, CHIU 1226 FREMONT COURT, LOUISVILLE, COLORADO 80501
5 LEWIS, GEORGE, SAL 732 ORCHARD DRIVE, LOUISVILLE, COLORADO 80027
6 DALLY, ROBERT, DEAN 9656 LOGANBERRY LANE, INDIANAPOLIS, INDIANA 46256
7 JONES, SCOTT, ALAN 922 SOUTHWOOD DRIVE, INDIANAPOLIS, INDIANA 46227
8 SHEPHERD, TIMOTHY, ALAN 8705 COUNTRY WOODS COURT, INDIANAPOLIS, INDIANA 46217
9 HUMMEL, CONRAD, WILSON 1767 WEST BARBERRY CIRCLE, LOUISVILLE, COLORADO 80027
PCT International Classification Number A61K 31/4453
PCT International Application Number PCT/IB2003/003349
PCT International Filing date 2003-07-16
PCT Conventions:
# PCT Application Number Date of Convention Priority Country
1 60/397,869 2002-07-22 U.S.A.
2 60/450,233 2003-02-25 U.S.A.