Title of Invention

"NEW PHENYLAMIDINE DERIVATIVES, PROCESSES FOR THEIR PREPARATION AND THEIR USE AS PHARMACEUTICALS"

Abstract The invention relates to new phenylamidine derivatives, processes for preparing them and their use as pharmaceutical compositions. The phenylamidines; according to the invention correspond to the general formula I
Full Text New phenylamidine derivatives, processes for
preparing them and their use as pharmaceutical
compositions
The invention relates to new phenylamidine derivatives,
processes for preparing them and their use in
pharmaceutical compositions. The phenylamidines
according to the invention correspond to the general
formula I
(Formula Removed)
wherein
A denotes X1-CmH2m-X2-, in which m is an integer 2, 3,
4, 5 or 6
or
and
j denotes O, NH or NCH3 ;
X2 denotes 0, NH, NCH3 or
- 2 -
X3 denotes -Xi-CnH2n- in which n is an integer 1 or 2;
X4 denotes -Cn-Han-Xj.-, wherein n is an integer 1 or 2;
R! denotes Cs.7-cycloalkyl, Arl7 OArlf CH2-Ar2;
CR4R5Ar3, or C(CH3)2R6;

R2 denotes H, Cx.6-alkyl; OH, halogen, or
O-fCj.g)-alkyl;
R3 denotes H, or C^.g-alkyl;
R4 denotes C^-alkyl, CF3, CH2OH, COOH, or
COO(C^4) -alkyl;
R5 denotes H, Cx-4-alkyl, or CF3 and
R4 and R5 may also together form a C4_6-alkylene group;
R6 denotes CH2OH, COOH, COO (C^) alkyl, CONR9R10, or
CH2NR9R10;
R7 denotes H, halogen, OH, C^.g-alkyl or C^g
R8 denotes H, halogen, OH, C^.g-alkyl or C-L.g
R9 denotes H, Ci-g-alkyl, phenyl, phenyl- (C^
CORllf COORllf CHO, CONH2/ CONHRu, S02-(C^g-
S02-phenyl, wherein the phenyl ring may be mono- or
polysubstituted by halogen, CF3, C1.4-alkyl, OH, or
C1_4-alkoxy;
R10 denotes H or C-L.g-alkyl and
R9 and R10 together may represent a C4.6-alkylene group;
RH denotes Ci.g-alkyl, C5.7-cycloalkyl, aryl,
heteroaryl, aralkyl or heteroaryl- (C^gwherein
the aryl or heteroaryl groups may be monoor
polysubstituted by Cl, F, CF3, C^-alkyl, OH or
C^-alkoxy;
denotes an optionally mono- or polysubstituted aryl
group, with the exception of an unsubstituted
phenyl group or a phenyl group which is
monosubstituted by halogen, C-^-alkyl or
C1_4-alkoxy;
Ar2 denotes an optionally mono- or polysubstituted aryl
group, with the exception of an unsubstituted
phenyl group;
Ar3 denotes an optionally mono- or polysubstituted aryl
group
with the proviso that
R cannot represent an unsubstituted phenyl group
bound via a C^-alkylene unit;
optionally in the form of individual optical isomers,
mixtures of the individual enantiomers, or racemates and
in the form of the free bases or the corresponding acid
addition salts with pharmacologically acceptable acids.
Preferred compounds according to general formula I are
those wherein
A denotes X1-Cm-H2m-X2 in which m is an integer 2
and
is 0;
X2 is
X3 denotes -X.i-CnK2n- _ wherein n is an integer 1 or 2 ;
X4 denotes -CnE2li-X.i- wherein n is an integer 1 or 2 ;
R! denotes C5_7-cycloalkyl , Arl7 OArx, CH2-Ar2;
CR4R5Ar3/ or C(CH3)2R6;
R2 denotes H, C^g-alky!, OH, Cl , or 0- (C^) -alkyl ;
R3 denotes H, or C^.g-alkyl;
R4 denotes C1.4-alkyl, CF3, or CH2OH;
R5 denotes H, C1.4-alkyl, CF3, or CH2OH and
R4 and R5 together may also form a C4_6-alkylene group;
R6 denotes CH2OH, COOH, COO (C^) alkyl, CONR9R10/ or
CH2NR9R10;
R7 denotes H, F, Cl , Br, OH, CVg-alkyI or C1_6-
R8 denotes H, F, Cl, Br, OH, C^.g-alkyl or C1_6-alkoxy;
R9 denotes H, or Cg-alkyl;
R10 denotes H or C-g-alkyl and
R9 and R10 together may also represent a C4_6-alkylene
group ;
Art denotes an optionally mono- or polysubstituted aryl
group, other than an unsubstituted phenyl group or a
phenyl group which is monosubstituted by halogen,
Ci-4-alkyl or C1_4-alkoxy;
Ar2 denotes an optionally mono- or polysubstituted aryl
group, with the exception of an unsubstituted phenyl
group;
Ar3 denotes an optionally mono- or polysubstituted aryl
group
with the proviso that
R! cannot represent an unsubstituted phenyl group
bound via a C1.4-alkylene unit;
optionally in the form of the individual optical
isomers, mixtures of the individual enantiomers or
racemates and in the form of the free bases or the
corresponding acid addition salts with pharmacologically
acceptable acids.
Particularly preferred compounds of general formula I
are those wherein
and
Xj is 0;
X3 denotes X1-CH2;
X4 denotes CE2-'K1;
R! denotes C5.7-cycloalkyl , Arlf OArlf CH2-Ar2;
CR4R5Ar3/ or C(CH3 ) 2R6 ;
R2 denotes H, OH, or 0- (C^g) -alkyl ;
fR3 denotes H;
R4 denotes CH3, or CH2OH;
R5 denotes H, CH3, or CH2OH and
R4 and R5 together may also denote a C4.6-alkylene group;
R6 denotes CH2OH, COOH, COO (C^) -alkyl , CONR9R10, or
CH2NR9R10;
R7 denotes H;
R8 denotes H;
R9 denotes H, or C^g-alkyl;
R10 denotes H or C^.g-alkyl and
R9 and R10 together may also denote a C4.6-alkylene group;
-L denotes an aryl group optionally mono- or
polysubstituted by hydroxy or by hydroxy and
Ar2 denotes an aryl group optionally mono- or
polysubstituted by hydroxy or by hydroxy and
Cj _6 -alkyl;
Ar3 denotes an aryl group optionally mono- or
polysubstituted by hydroxy or by hydroxy and
optionally in the form of the individual optical
isomers, mixtures of the individual enantiomers or
racemates and in the form of the free bases or the
corresponding acid addition salts with pharmacologically
acceptable acids.
Unless specifically stated otherwise, the general
definitions are used as follows:
C^-Alkyl, Ci.g-alkyl and C-^g-alkyl, respectively,
generally denote branched or unbranched hydrocarbon
groups having 1 to 4, 6 or 8 carbon atoms respectively.
These may optionally be substituted by one or more
halogen atoms, preferably fluorine, which may be the
same or different from one another. The following
hydrocarbon groups are mentioned by way of example:
methyl, ethyl, propyl, 1-methylethyl (isopropyl) , nbutyl,
1-methylpropyl, 2-methylpropyl, 1,1-
dimethylethyl, pentyl, 1-methylbutyl, 2-methylbutyl , 3-
methylbutyl, 1, 1-dimethylpropyl, 1, 2-dimethylpropyl ,
2 , 2-dimethylpropyl, 1-ethylpropyl, hexyl, 1-
methylpentyl, 2-methylphenyl, 3-methylpentyl, 4-
methylpentyl, 1, 1-dimethylbutyl, 1, 2-dimethylbutyl, 1,3-
dimethylbutyl, 2 , 2-dimethylbutyl, 2 , 3-dimethylbutyl ,
3,3-dimethylbutyl, 1-ethylbutyl, 2-ethylbutyl, 1,1,2-
trimethylpropyl, 1, 2, 2-trimethylpropyl, 1-ethyl-lmethylpropyl
and 1- ethyl -2-methylpropyl . Unless
otherwise specified, lower alkyl groups having 1 to 4
carbon atoms such as methyl, ethyl, propyl, isopropyl,
n-butyl, 1-methylpropyl, 2-methylpropyl or 1,1-
dimethylethyl are preferred.
Aryl generally denotes an aromatic group having 6 to 10
carbon atoms, the aromatic group may also be substituted
by one or more lower alkyl groups, trifluoromethyl
groups, cyano groups, alkoxy groups, nitro groups, amino
groups and/or one or more halogen atoms - which may be
identical or different; the preferred aryl group is an
optionally substituted phenyl group, the preferred
substituents being halogen (such as fluorine, chlorine
or bromine) and hydroxyl.
Aralkyl generally denotes a C7.14-aryl group bound via an
alkylene chain, in which the aromatic group may be
substituted by one or more lower alkyl groups, alkoxy
groups, nitro groups, amino groups and/or one or more
halogen atoms, which may be identical or different.
Aralkyl groups having 1 to 6 carbon atoms in the
aliphatic part and 6 carbon atoms in the aromatic part
are preferred.
Unless otherwise stated, the preferred aralkyl groups
are benzyl, phenethyl and phenylpropyl or 2-phenylisopropyl.
Alkoxy generally represents a straight-chained or
branched Cl.e-hydrocarbon group bound via an oxygen atom.
A lower alkoxy group having 1 to 3 carbon atoms is
preferred. The methoxy group is particularly preferred.
Unless otherwise stated, amino denotes an NH2 function
which may optionally be substituted by one or two
Ci.e-alkyl, aryl or aralkyl groups, which may be
identical or different.
Alkylamino represents, by way of example, methylamino,
ethylamino, propylamino, 1-methylene-ethylamino,
butylamino, 1-methylpropylamino, 2-methylpropylamino or
1, l-dimethylethylamino.
Dialkylamino denotes, for example, dimethylamino,
diethylamino, dipropylamino, dibutylamino, di-(1-
methylethyl)amino, di-(1-methylpropyl)amino, di - 2 -
methylpropylamino, ethylmethylamino or
methylpropylamino.
Cycloalkyl generally denotes a saturated or unsaturated
cyclic hydrocarbon group having 5 to 9 carbon atoms
which may optionally be substituted by a halogen atom or
a number of halogen atoms, preferably fluorine, which
may be the same or different. Cyclic hydrocarbon groups
having 3 to 6 carbon atoms are preferred. Examples
include cyclopropyl, cyclobutyl, cyclopentyl,
cyclopentenyl, cyclohexyl, cyclohexenyl, cycloheptyl,
cycloheptenyl, cycloheptadienyl, cyclooctyl,
cyclooctenyl, cyclooctadienyl and cyclononinyl.
Heteroaryl, within the scope of the above definition,
generally represents a 5- to 6-membered ring which may
contain oxygen, sulphur and/or nitrogen as heteroatoms
and onto which another aromatic ring may be fused. 5-
and 6-membered aromatic rings which contain an oxygen, a
sulphur and/or up to two nitrogen atoms and which are
optionally benzocondensed are preferred.
Examples of particular heterocyclic systems include:
acridinyl, acridonyl, alkylpyridinyl, anthraquinonyl,
ascorbyl, azaazulenyl, azabenzanthracenyl,
azabenzanthrenyl, azachrysenyl, azacyclazinyl,
azaindolyl, azanaphthacenyl, azanaphthalenyl, azaprenyl,
azatriphenylenyl, azepinyl, azinoindolyl, azinopyrrolyl,
benzacridinyl, benzazapinyl, benzofuryl,
benzonaphthyridinyl, benzopyranonyl, benzopyranyl,
benzopyronyl, benzoquinolinyl, benzoquinolizinyl,
benzothiepinyl, benzothiophenyl, benzylisoquinolinyl,
bipyridinyl, butyrolactonyl, caprolactamyl, carbazolyl,
carbolinyl, catechinyl, chromenopyronyl,
chromonopyranyl, cumarinyl, cumaronyl,
decahydroquinolinyl, decahydroquinolonyl,
diazaanthracenyl, diazaphenanthrenyl, dibenzazapinyl,
dibenzofuranyl, dibenzothiophenyl, dichromylenyl,
dihydrofuranyl, dihydroisocumarinyl,
dihydroisoquinolinyl, dihydropyranyl, dihydropyridinyl,
dihydropyridonyl, dihy^dropyronyl, dihydrothiopyranyl,
diprylenyl, dioxanthylenyl, oenantholactamyl, flavanyl,
flavonyl, fluoranyl, fluoresceinyl, furandionyl,
furanochromanyl, furanonyl, furanoquinolinyl, furanyl,
furopyranyl, furopyronyl, heteroazulenyl,
hexahydropyrazinoisoquinolinyl, hydrofuranyl,
hydrofuranonyl, hydroindolyl, hydropyranyl,
hydropyridinyl, hydropyrrolyl, hydroquinolinyl,
hydrothiochromenyl, hydrothiophenyl, indolizidinyl,
indolizinyl, indolonyl, isatinyl, isatogenyl,
isobenzofurandionyl, isobenzfuranyl, isochromanyl,
isoflavonyl, isoindolinyl, isoindolobenzazapinyl,
isoindolyl, isoquinolinyl, isoquinuclidinyl, lactamyl,
lactonyl, maleimidyl, monoazabenzonaphthenyl,
naphthalenyl, naphthimidazopyridindionyl,
naphthindolizinedionyl, naphthodihydropyranyl,
naphthofuranyl, naphthyridinyl, oxepinyl, oxindolyl,
oxolenyl, perhydroazolopyridinyl, perhydroindolyl,
phenanthracquinonyl, phthalideisoquinolinyl,
phthalimidyl, phthalonyl, piperidinyl, piperidonyl,
prolinyl, parazinyl, pyranoazinyl, pyranoazolyl,
pyranopyrandionyl, pyranopyridinyl, pyranoquinolinyl,
pyranopyrazinyl, pyranyl, pyrazolopyridinyl,
pyridinethionyl, pyridinonaphthalenyl,
pyridinopyridinyl, pyridinyl, pyridocolinyl,
pyridoindolyl, pyridopyridinyl, pyridopyrimidinyl,
pyridopyrrolyl, pyridoquinolinyl, pyronyl, pyrrocolinyl,
pyrrolidinyl, pyrrolizidinyl, pyrrolizinyl,
pyrrolodioazinyl, pyrrolonyl, pyrrolopyrimidyl,
pyrroloquinolonyl, pyrrolyl, quinacridonyl, quinolinyl,
quinolizidinyl, quinolizinyl, quinolonyl, quinuclidinyl,
rhodaminyl, spirocumaranyl, succinimidyl, sulpholanyl,
sulpholenyl, tetrahydrofuranyl, tetrahydroisoquinolinyl,
tetrahydropyranyl, tetrahydropyridinyl,
tetrahydrothiapyranyl, tetrahydrothiophenyl,
tetrahydrothipyranonyl, tetrahydrothipyranyl, tetronyl,
thiaphenyl, thiachromanyl, thiadecalinyl,
thianaphthenyl, thiapyranyl, thiapyronyl,
thiazolopyridinyl, thienopyridinyl, thienopyrrolyl,
thienothiophenyl, thiepinyl, thiochromenyl,
thiocumarinyl, thiopyranyl, triazaanthracenyl,
triazinoindolyl, triazolopyridinyl, tropanyl, xanthenyl,
xanthonyl, xanthydrolyl, adeninyl, alloxanyl,
alloxazinyl, anthranilyl, azabenzanthrenyl,
azabenzonaphthenyl, azanaphthacenyl, azaphenoxazinyl,
azapurinyl, azinyl, azoloazinyl, azolyl, barbituric
acid, benzazinyl, benzimidazolethionyl,
benzimidazolonyl, benzisothiazolyl, benzisoxazolyl,
benzocinnolinyl, benzodiazocinyl, benzodioxolanyl,
benzodioxolyl, benzopyridazinyl, benzothiazepinyl,
benzothiazinyl, benzothiazolyl, benzoxazinyl,
benzoxazolinonyl, benzoxazolyl, cinnolinyl, depsidinyl,
diazaphenanthrenyl, diazepinyl, diazinyl,
dibenzoxazepinyl, dihydrobenzimidazolyl,
dihydrobenzothiazinyl, dihydrooxazolyl,
dihydropyridazinyl, dihydropyrimidinyl,
dihydrothiazinyl, dioxanyl, dioxenyl, dioxepinyl,
dioxinonyl, dioxolanyl, dioxolonyl, dioxopiperazinyl,
dipyrimidopyrazinyl, dithiolanyl, dithiolenyl,
dithiolyl, flavinyl, furopyrimidinyl, glycocyamidinyl,
guaninyl, hexahydropyrazinoisoquinolinyl,
hexahydropyridazinyl, hydantoinyl, hydroimidazolyl,
hydroparazinyl, hydropyrazolyl, hydropyridazinyl,
hydropyrimidinyl, imidazolinyl, imidazolyl,
imidazoquinazolinyl, imidazothiazolyl,
indazolebenzopyrazolyl, indoxazenyl, inosinyl,
isoalloxazinyl, isothiazolyl, isoxazolidinyl,
isoxazolinonyl, isoxazolinyl, isoxazolonyl, isoxazolyl,
lumazinyl, methylthyminyl, methyluracilyl, morpholinyl,
naphthimidazolyl, oroticyl, oxathianyl, oxathiolanyl,
oxazinonyl, oxazolidinonyl, oxazolidinyl, oxazolidonyl,
oxazolinonyl, oxazolinyl, oxazolonyl,
oxazolopyrimidinyl, oxazolyl, perhydrocinnolinyl,
perhydropyrroloazinyl, perhydropyrrolothiazinyl,
perhydrothiazinonyl, perimidinyl, phenazinyl,
phenothiazinyl, phenoxathiinyl, phenoxazinyl,
phenoxazonyl, phthalazinyl, piperazindionyl,
piperazinodionyl, polyquinoxalinyl, pteridinyl,
pterinyl, purinyl, pyrazinyl, pyrazolidinyl,
pyrazolidonyl, pyrazolinonyl, parazolinyl,
pyrazolobenzodiazepinyl, pyrazolonyl,
pyrazolopyrimidinyl, pyrazolotriazinyl, pyrazolyl,
pyridazinyl, pyridazonyl, pyridopyrazinyl,
pyridopyrimidinyl, pyrimidinethionyl, pyrimidinyl,
pyrimidioriyl, pyrimidoazepinyl, pyrimidopteridinyl,
pyrrolobenzodiazepinyl, pyrrolodiazinyl,
pyrrolopyrimidinyl, quinazolidinyl, quinazolinonyl,
quinazolinyl, quinoxalinyl, sultamyl, sultinyl,
sultonyl, tetrahydrooxazolyl, tetrahydropyrazinyl,
tetrahydropyridazinyl, tetrahydroquinoxalinyl,
tetrahydrothiazolyl, thiazepinyl, thiazinyl,
thiazolidinonyl, thiazolidinyl, thiazolinonyl,
thiazolinyl, thiazolobenzimidazolyl, thiazolyl,
thienopyrimidinyl, thiazolidinonyl, thyminyl,
triazolopyrimidinyl, uracilyl, xanthinyl, xylitolyl,
azabenzonaphththenyl, benzofuroxanyl, benzothiadiazinyl,
benzotriazepinonyl, benzotriazolyl, benzoxadiazinyl,
dioxadiazinyl, dithiadazolyl, dithiazolyl, furazanyl,
furoxanyl, hydrotriazolyl, hydroxytrizinyl, oxadiazinyl,
oxadiazolyl, oxathiazinonyl, oxatriazolyl, pentazinyl,
pentazolyl, petrazinyl, polyoxadiazolyl, sydonyl,
tetraoxanyl, tetrazepinyl, tetrazinyl, tetrazolyl,
thiadiazinyl, thiadiazolinyl, thiadiazolyl,
thiadioxazinyl, thiatriazinyl, thiatriazolyl,
thiatriazolyl, triazepinyl, triazinoindolyl, triazinyl,
triazolinedionyl, triazolinyl, triazolyl, trioxanyl,
triphenodioxazinyl, triphenodithiazinyl,
trithiadiazepinyl, trithianyl or trioxolanyl.
Particularly preferred heteroaryl groups include, for
example, thienyl, furyl, pyridyl, pyrimidyl, pyrazinyl,
pyridazinyl, quinolyl,, isoquinolyl, quinazolyl,
quinoxalyl, thiazolyl, benzothiazolyl, isothiazolyl,
.oxazolyl, benzoxazolyl, isoxazolyl, imidazolyl,
benzimidazolyl, pyrazolyl and indolyl.
The new compounds may be prepared by a variety of
methods, which comprise a further feature of the
invention. The following procedures may be used to
prepare compounds of the invention:
1) Imidoesters of formula II
(Figure Removed)
(wherein Rx to R4, A and B are as hereinbefore
defined and -OR or -SR denote the residue of an
alcohol or thiol preferably in which R denotes a
Ci.g-alkyl or benzyl group) may be reacted with
ammonia.
The reaction is conveniently carried out in an
organic solvent at temperatures between about 0°C
and the boiling temperature of the reaction
mixture, preferably between ambient temperature and
about 100°C or boiling temperature, if this is
lower. Suitable solvents are polar solvents such
as methanol, ethanol and propanol.
If the starting materials are sufficiently acidstable,
the reaction may be carried out via the
corresponding acid imide chlorides instead of the
imido esters.
2) In order to prepare compounds of formula I wherein
A is linked via 0 or S to at least one of the ring
systems:
(a) a phenol or thiophenol of formula III
wherein Z denotes OH or SH and R17 R2 and R3 are as
hereinbefore defined, is reacted with a compound of
general formula IV
[IV)
wherein A is as hereinbefore defined and L denotes
a nucleofugic leaving group, or
(b) a phenol or thiophenol of formula V
(Figure Removed)
wherein Z is as hereinbefore defined, is reacted
with a compound of formula VI:
(Figure Removed)
wherein A, Rt, R2, R3 and L are as hereinbefore
defined.
The reaction is carried out in aprotic solvents
such as dimethylsulphoxide, dimethylformamide,
acetonitrile or alcohols such as methanol, ethanol
or propanol using a base (metal carbonate, metal
hydroxide, metal hydride) at temperatures between
about 0 and 140°C or the boiling temperature of the
reaction mixture.
The phenols or thiophenols may also be used in the
form of salts, e.g. the alkali metal salts. The
nucleofugic leaving group may be, for example, a
halogen such as Br or Cl.
3) An amidoxime of formula VII
NOH
(VII)
wherein A and Rt to R3 are as hereinbefore defined,
is reduced.
Catalytic hydrogenation, particularly with Raney nickel
in a lower alcohol such as methanol, is preferred as a
method for reducing the amidoxime.
Appropriately, the amidoxime of the formula (VII) is
dissolved in methanol with the addition of the
calculated quantity of the particular acid the salt of
which is desired as an end product, and hydrogenated at
ambient temperature under slight pressure, e.g. 5 bar,
until the uptake of hydrogen has ceased.
The starting materials may be obtained from known
compounds by conventional methods.
Thus, the starting materials for process 1) may be
obtained from the corresponding nitriles by reacting
with HCl via the step of the imide chlorides or directly
by reacting with C^g-alcohols or benzyl alcohol, for
example, in the presence of an acid such as HCl.
Reacting the nitriles with H2S in solvents such as
pyridine or dimethylformamide in the presence of a base
such as triethylamine with subsequent alkylation or
benzylation also results in compounds of formula II.
Starting from carboxylic acid amides, which moreover
correspond to the compounds of formula II by reacting
with a trialkyloxonium salt such as triethyloxoniumtetrafluoroborate
in a solvent such as dichloromethane,
tetrahydrofuran or dioxane at temperatures of between 0
and 50°C, preferably at ambient temperature, compounds
of formula II are obtained.
In order to prepare the starting materials of general
formula VII, the corresponding amidoximes may be reacted
instead of amidines in a process analogous to process 1)
or 2), or by analogous reaction of corresponding
nitriles, from which the starting materials of general
formula VII are finally obtained by the addition of
hydroxylamine.
It has been found that the compounds of formula I are
characterised by their versatility in therapeutic
applications. Particular mention should be made of
those applications in which the LTB4-receptorantagonistic
properties play a part. These include, in
particular, arthritis, asthma, chronic obstructive lung
diseases, e.g. chronic bronchitis, psoriasis, ulcerative
colitis, gastro- or enteropathy induced by non-steroidal
antiphlogistics, cystic fibrosis, Alzheimer's disease,
shock, reperfusion damage/ischaemia, atherosclerosis and
multiple sclerosis.
The new compounds may also be used to treat illnesses or
conditions in which the passage of cells from the blood
through the vascular endothelium into the tissue is of
importance (e.g. metastasis) or diseases and conditions
in which the combination of LTB4 or another molecule
(such as 12-HETE) with the LTB4-receptor affects cell
proliferation (such as chronic myeloid leukaemia).
The new compounds may be used in conjunction with other
active substances, e.g. those used for the same
indications, or with antiallergics, secretolytics, (32-
adrenergics, steroids administered by inhalation,
antihistamines and/or PAF-antagonists. They may be
administered topically, orally, transdermally, nasally,
parenterally or by inhalation.
The activities may be investigated pharmacologically and
biochemically using tests such as those described in
WO 93/16036, pages 15 to 17, which are thus incorporated
herein by reference.
The therapeutic or prophylactic dose is dependent not
only on the potency of the individual compounds and the
body weight of the patient but also on the nature and
gravity of the condition being treated. For oral use
the dose is between 10 and 500 mg, preferably between 20
and 250 mg. For administration by inhalation, the dose
given to the patient is between about 0.5 and 25,
preferably between about 2 and 20 mg of active
substance.
Solutions for inhalation generally contain between about
0.5 and 5% of active substance. The new compounds may
be administered in conventional preparations, e.g. as
tablets, coated tablets, capsules, lozenges, powders,
granules, solutions, emulsions, syrups, aerosols for
inhalation, ointments and suppositories.
The Examples which follow show some possible
formulations for the preparations:
Examples of formulations
1. Tablets
Composition:
Active substance according to the
invention 20 parts by weight
Stearic acid 6 parts by weight
Glucose 474 parts by weight
The ingredients are processed in the usual way to form
tablets weighing 500 mg. If desired, the content of
active substance may be increased or reduced and the
quantity of glucose reduced or increased accordingly.
2. Suppositories
Composition:
Active substance according to the
invention 1000 parts by weight
Powdered lactose 45 parts by weight
Cocoa butter 1555 parts by weight
The ingredients are processed in the usual way to form
suppositories weighing 1.7 g.
3. Powders for inhalation
Micronised powdered active substance (compound of
formula I; particle size approximately 0.5 to 7 /xm) are
packed into hard gelatine capsules in a quantity of
5 mg, optionally with the addition of micronised
lactose. The powder is inhaled from conventional
inhalers, e.g. according to DE-A 33 45 722, to which
reference is hereby made.
(Figure Removed)

Example of synthesis
Amidoxime: X = para-C(=NOH)NH2
2.0 g of the nitrile of the above formula (X = para-CN)
are placed in 40 ml of ethanol, refluxed and a mixture
of 1 g of Na2C03 in 5 ml of water and 1.24 g of
hydroxylamine x HCl is added dropwise. After 5 hours'
refluxing the solvent is distilled off, the residue is
stirred with 50 ml of water, extracted 3 x with 50 ml of
ethyl acetate and the combined organic phases are dried.
After filtering, the substance is evaporated down in
vacuo and the residue is purified by flash
chromatography (silica gel 60, CH2Cl2/methanol 9:1). The
product is dissolved in ethanol, acidified with
ethanolic HCl and precipitated as the hydrochloride
using ether. The oil obtained is crystallised with
ethyl acetate. Yield: 2.0 g of white crystals.
4-[[3-[[4-[1-(4-Hydroxyphenyl)-1-methylethyl]phenoxy]-
methyl]phenyl]methoxy]benzolcarboximidamide
hydrochloride (X = para-C(=NH)-NH2)
2.0 g of the amidoxime of the above formula (X = para-
C(=NOH)~NH2) are dissolved in 50 ml of methanol and
hydrogenated with 5 g of methanol-moistened Raney nickel
with the addition of 1 ml of 20% ammonium chloride
solution for 5 hours under normal pressure and at
ambient temperature. The nickel is suction filtered and
the solution is filtered through kieselguhr. After
concentration by evaporation in vacuo, the residue is
stirred with 50 ml of water. The crystals are suction
filtered and recrystallised twice from ethanol/ether.
Yield: 1.0 g of the amidine compound (the above formula,
X = para-C(=NH)-NH2 as hydrochloride, m.p. 234-236°C.
The following compounds are also obtained, inter alia,
using this procedure:
(Table Removed)
Surprisingly, the compounds in the Example and in the
Table have outstanding Kt values which are largely within
the range from 0.2 to 0.7 nmol/1 (RB.LTB4/U937 cells).



Claims
1. Compounds of general formula I
NH,
(Formula Removed)
wherein
A denotes X1-CmH2m-X2/ in which m is an integer 2, 3,
4, 5 or 6
or
and
x denotes 0, NH or NCH3;
X2 denotes 0, NH, NCH3 or
X3 denotes ~Xi-CnU2n- in which n is an integer 1 or 2 ;
X4 denotes -Cn-H^-X!-, wherein n is an integer 1 or 2;
R! denotes C5.7-cycloalkyl, Arl r OArl7 CH2-Ar2;
CR4R5Ar3, or C(CH3 ) 2R6 ;
R2 denotes H, C^g-alkyl, OH, halogen, or O- ( C alkyl;
R3 denotes H, or C^g-
R4 denotes C^-alkyl, CF3, CH2OH, COOH, or
000(0!. 4) -alkyl;
R5 denotes H, C1_4-alkyl, or CF3 and
^,1
R4 and R5 may also together form a C4_6-alkylene group;
R6 denotes CH2OH, COOH, COO (C^ ) -alkyl, CONR9R10, or
CH2NR9R10;
R7 denotes H, halogen, OH, C-^g-alkyl or C^.g-alkoxy;
Re denotes H, halogen, OH, C-^g-alkyl or C^g-
R9 denotes H, C^g-alkyl, phenyl, phenyl- (C-^g-
CORu, COOR11; CHO, CONH2 , CONHRllf SO2- (C^g-
SO2 -phenyl, wherein the phenyl ring may be mono- or
polysubstituted by halogen, CF3, C1.4-alkyl/ OH,
C1.4-alkoxy;
R10 denotes H or C^.g-alkyl and
R9 and R10 together may represent a C4.6-alkylene group;
denotes Ci.g-alkyl, C5.7-cycloalkyl, aryl,
heteroaryl, aralkyl or heteroaryl- (Ci^gwherein
the aryl or heteroaryl groups may be monoor
polysubstituted by Cl, F, CF3, Cx^-alkyl, OH or
C1_4-alkoxy;
denotes an optionally mono- or polysubstituted aryl
group, with the exception of an unsubstituted
phenyl group or a phenyl group which is
monosubstituted by halogen, C1.4-alkyl or
Ar2 denotes an optionally mono- or polysubstituted aryl
group, with the exception of an unsubstituted
phenyl group;
Ar3 denotes an optionally mono- or polysubstituted aryl
group
,t
with the proviso that
R! cannot represent an unsubstituted phenyl group
bound via a C1_4-alkylene unit;
optionally in the form of individual optical isomers,
mixtures of individual enantiomers, or racemates and in
the form of the free bases or the corresponding acid
addition salts with pharmacologically acceptable acids.
2. Compounds according to general formula I wherein
A denotes X1-Cm-H2m-X2 in which m is the integer 2
and
Xj_ is O;
X2 is
X3 denotes X^Cy^ wherein n is the integer 1 or 2;
X4 denotes C^n'^i wherein n is the integer 1 or 2;
R! denotes C5.7-cycloalkyl, Arlf OAr^ CH2-Ar2;
CR4R5Ar3, C(CH3)2R6;
R2 denotes H, Ci.g-alkyi, OH, Cl, O- (d.6) -alkyl ;
R3 denotes H, Ci. 6- alkyl;
R4 denotes C^-alkyl, CF3/ CH2OH;
R5 denotes H, C^-alkyl, CF3, CH2OH and
R4 and R5 together may also form a C4_6-alkylene group;
R6 denotes CH2OH, COOH, COO (^.4) alkyl, CONR9R10,
CH2NR9R10;
R7 denotes H, F, Cl, Br, OH, C^g-alkyl or C1_6-alkoxy;
R8 denotes H, F, Cl, Br, OH, C^g-alkyl or C1_6-alkoxy;
R9 denotes H, Ci.g-alkyl;
R10 denotes H or Ci.g-alkyl and
R9 and R10 together may also represent a C4_6-alkylene
group ;
x denotes an optionally mono- or polysubstituted aryl
group, with the exception of the unsubstituted phenyl
group and the phenyl group which is monosubstituted by
halogen, C^-alkyl and monosubstituted by C1.4-alkoxy;
Ar2 denotes an optionally mono- or polysubstituted
aryl group, with the exception of the unsubstituted
phenyl group ;
Ar3 denotes an optionally mono- or polysubstituted aryl
group
with the proviso that
R! cannot represent an unsubstituted phenyl group
bound via a C1_4-alkylene unit;
optionally in the form of individual optical isomers,
mixtures of individual enantiomers or racemates and /• in
the form of the free bases or the corresponding acid
addition salts with pharmacologically acceptable acids.
3. Compounds according to general formula I wherein
A denotes
and
Xj. is O;
X3 denotes X1-CE2;
X4 denotes
Rx denotes C5.7-cycloalkyl, Arl7 OAr^ CH2-Ar2;
CR4R5Ar3, C(CH3)2R6;
R2 denotes H, OH, 0- (C^g) -alkyl ;
R3 denotes H;
R4 denotes CH3, CH2OH;
R5 denotes H, CH3 , CH2OH and
R4 and R5 together may also denote a C4_6-alkylene group;
R6 denotes CH2OH, COOH, COO (C^) -alkyl , CONR9R10/
R7 denotes H;
R8 denotes H;
R9 denotes H, Ci.g-
R10 denotes H or C^.g-alkyl and
R9 and R10 together may also denote a C4_6-alkylene group;
x denotes an aryl group optionally mono- or
polysubstituted by hydroxy or by hydroxy and
Ar2 denotes an aryl group optionally mono- or
polysubstituted by hydroxy or by hydroxy and
Ar3 denotes an aryl group optionally mono- or
polysubstituted by hydroxy or by hydroxy and
optionally in the form of individual optical isomers,
mixtures of individual enantiomers or racemates and in
the form of the free bases or the corresponding acid
addition salts with pharmacologically acceptable acids.
4 . A process for preparing compounds according to
general formula I, as claimed in claim 1, which
comprises either a) reacting an imido ester of general
formula II
(Formula Removed)
wherein Rx to R4 and A are defined as in claim 1 and -OR
represents the residue of an alcohol with ammonia.
or b) where it is desired to form a compound in which A
is linked to at least one of the ring systems via 0 or
S, either
(i) reacting a phenol or thiophenol of formula III
(Formual Removed)
wherein Z denotes OH or SH and R1; R2 and R3 are as
defined in claim 1, with a compound of general formula
IV
(Formula Removed)
wherein A is defined as in claim 1 and L denotes a
nucleofugic leaving group;
or ii) reacting a phenol or thiophenol of general
formula V
(Figure Removed)
wherein z is defined as in (i) above with a compound of
formula VT
(Formula Removed)
wherein A, R17 Rj, R3 and L are defined as in claim 1;
or c) reducing an amidoxime of general formula (Formula Removed)

wherein A and Rt to R3 are defined as in claim 1;
followed where necessary or desired, by separation of
any mixture of optical isomers into individual isomers,
and formation of any acid-addition salt or free base
from the free base or acid-addition salt respectively-
5. A process according to part a) of claim 4, wherein
the reaction takes place in a polar organic solvent, at
(Figure Removed)
a temperature between about 0*C and the boiling '
temperature of the reaction mixture. I '
S. A process as claimed in claim 5 wherein the
reaction is carried out in methanol, ethanol orlpropanol
at between ambient temperature and about 10()"C or the
boiling temperature of the;reaction mixture, if I this is
lower
7. A process according to part b)(i) or b}(iij of
claim 4, wherein the reaction is carried out in^an
aprotic solvent in the presence of a base. i
8. A process as claimed in claim 7 wherein the
reaction is carried out in dimethylsulphoxide,
dimethylformamide, acetonitrile or a lower alkahol, and
the base is a metal carbonate, metal hydroxide p:r metal
hydride. i
9. A process according to any of claims 4 b), 7 or 8,
which is carried out at a. tempeirature b«=>t-.weaii Qi ,ind
140°C or between, 0"C and the boiling temperature of the
reaction mixture if this is lower. :
10. A process according to any of claims 4 b) or 7 to
9, wherein the phenols or thiophenols axe used in the
form of their alkali metal salts, and where necessary or
desired, a halogen is used as the nucleofugic leaving
group. XI. A process according to part c) of claim 4/; wherein
the reduction is carried out in the presence of a Raney
nickel catalyst in a lower alkanol solvent, under ah
elevated pressure of approximately 5 bar.

12. A process according to claim 4 a) or claim 5 in
which, instead of an imidq ester of general formula II,
a corresponding acid imide chloride is used as starting
material.
13. Pharmaceutical preparation which comprises a
compound according to any one of claims X to 3 or an
acid addition salt thereof together with a
pharmaceutically acceptable carrier, excipient or
diluent.
14. Use of a compound according to any one of claims 1
to 3 in a pharmaceutical composition.
15. Use of compounds according to claim 14 as a
pharmaceutical having LTB4-antagonistic activity.
16. Use of a. compound of gene,ral formula. I ap claimed
in claim 1, their stereoisomers and the acid addition
salts thereof for preparing.a drug for the therapeutic
treatment of arthritis, asthma, chronic obstructive lung
disease such as chronic bronchitis, psoriasis?/
ulcerative colitis, gastropathy or enteropathy induced
by non-steroidal antiphlogistics, cystic fibrosis,.
Alzheimer's disease, shock,:reperfusion
damage/ischaemia, atherosclerosis and multiple
sclerosis.
17. A method of treating- a condition requiring
LTB4-antagonistic activity which comprises administering
to a subject an effective amount: of a compound oi:
formula (I) as claimed in claim 1 or a stereoisomer or
acid-addition salt thereof.
18. Compounds of general formula I substantially as hereinbefore
described with reference to the foregoing examples.
19. A process for preparing compounds substantially as
hereinbefore described with reference to the foregoing examples.
20. Pharmaceutical preparation substantially as herein described
with reference to the foregoing examples.


Documents:

2669-DEL-1996-Abstract-04-03-2008.pdf

2669-del-1996-abstract-24-04-2008.pdf

2669-del-1996-abstract.pdf

2669-DEL-1996-Claims-04-03-2008.pdf

2669-del-1996-claims-24-04-2008.pdf

2669-del-1996-claims.pdf

2669-DEL-1996-Correspondence-Others-04-03-2008.pdf

2669-del-1996-correspondence-others-15-04-2008.pdf

2669-del-1996-correspondence-others-24-04-2008.pdf

2669-del-1996-correspondence-others.pdf

2669-del-1996-correspondence-po.pdf

2669-DEL-1996-Description (Complete)-04-03-2008.pdf

2669-del-1996-description (complete)-24-04-2008.pdf

2669-del-1996-description (complete).pdf

2669-del-1996-form-1-24-04-2008.pdf

2669-del-1996-form-1.pdf

2669-del-1996-form-18.pdf

2669-del-1996-form-2-24-04-2008.pdf

2669-del-1996-form-2.pdf

2669-del-1996-form-3.pdf

2669-del-1996-form-4.pdf

2669-del-1996-form-5.pdf

2669-del-1996-form-6.pdf

2669-DEL-1996-GPA-04-03-2008.pdf

2669-del-1996-gpa.pdf

2669-DEL-1996-Other Document-04-03-2008.pdf

2669-DEL-1996-Petition-137-04-03-2008.pdf

2669-DEL-1996-Petition-138-04-03-2008.pdf

abstract.jpg


Patent Number 219377
Indian Patent Application Number 2669/DEL/1996
PG Journal Number 25/2008
Publication Date 20-Jun-2008
Grant Date 30-Apr-2008
Date of Filing 02-Dec-1996
Name of Patentee BOEHRINGER INGELHEIM KG.
Applicant Address
Inventors:
# Inventor's Name Inventor's Address
1 ANDREAS DING
2 FRANZ BIRKE
3 HANS JENNWEIN
4 ERNST-OTTO RENTH
5 CHRISTOPHER MEADE
6 KURT SCHROMM
7 RALF ANDERSKEWITZ
PCT International Classification Number C07C 257/18
PCT International Application Number N/A
PCT International Filing date
PCT Conventions:
# PCT Application Number Date of Convention Priority Country
1 195 46 452.4 1995-12-13 Germany