Title of Invention

AN IMPROVED PROCESS FOR PRODUCING N-[3-(3-CYANOPYRAZOLO[1,5-a] PYRIMIDIN-7yl) PHENY1] N-ETHYLACETAMIDE (ZALEPLON)

Abstract A process for producing Zaleplon comprising: (a)reacting N-[3-[3-arylamino)-1-oxo-2-propeny1)pheny1]-N-ethy1 acetamide with 3-amino-4-cyanopyrazole hydrochloride in aqueous acetic acid containing acids. (b)water in to the said acetic in the range of 10% to 90% and preferably between 30 to 60%; and (c)The temperature of reaction mixture ranging from 0(0)C-50(0)C preferably at temperature ranging between 25(0)-35(0)C.
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Documents:

798-MUM-2004-CANCELLED PAGES(25-6-2010).pdf

798-MUM-2004-CLAIMS(25-6-2009).pdf

798-MUM-2004-CLAIMS(28-7-2004).pdf

798-MUM-2004-CLAIMS(AMENDED)-(17-11-2009).pdf

798-MUM-2004-CLAIMS(AMENDED)-(25-6-2010).pdf

798-MUM-2004-CLAIMS(GRANTED)-(23-3-2011).pdf

798-MUM-2004-CLAIMS(MARKED COPY)-(1-10-2009).pdf

798-MUM-2004-CLAIMS(MARKED COPY)-(25-6-2010).pdf

798-MUM-2004-CORRESPONDENCE(1-10-2009).pdf

798-MUM-2004-CORRESPONDENCE(18-8-2007).pdf

798-MUM-2004-CORRESPONDENCE(21-6-2010).pdf

798-MUM-2004-CORRESPONDENCE(25-6-2009).pdf

798-MUM-2004-CORRESPONDENCE(25-6-2010).pdf

798-MUM-2004-CORRESPONDENCE(26-8-2009).pdf

798-MUM-2004-CORRESPONDENCE(IPO)-(25-3-2011).pdf

798-MUM-2004-CORRESPONDENCE(IPO)-(25-6-2009).pdf

798-MUM-2004-DESCRIPTION(COMPLETE)-(25-6-2009).pdf

798-MUM-2004-DESCRIPTION(GRANTED)-(23-3-2011).pdf

798-MUM-2004-DESCRIPTIONCOMPLETE)-(28-7-2004).pdf

798-MUM-2004-FORM 1(1-10-2009).pdf

798-MUM-2004-FORM 1(17-11-2009).pdf

798-MUM-2004-FORM 1(28-7-2004).pdf

798-MUM-2004-FORM 18(20-8-2007).pdf

798-MUM-2004-FORM 2(COMPLETE)-(28-7-2004).pdf

798-MUM-2004-FORM 2(GRANTED)-(23-3-2011).pdf

798-MUM-2004-FORM 2(TITLE PAGE)-(17-11-2009).pdf

798-MUM-2004-FORM 2(TITLE PAGE)-(26-8-2009).pdf

798-MUM-2004-FORM 2(TITLE PAGE)-(28-7-2004).pdf

798-MUM-2004-FORM 2(TITLE PAGE)-(GRANTED)-(23-3-2011).pdf

798-MUM-2004-FORM 3(26-8-2009).pdf

798-MUM-2004-OTHER DOCUMENT(25-6-2009).pdf

798-MUM-2004-PETITION UNDER RULE 137(17-11-2009).pdf

798-MUM-2004-REPLY TO EXAMINATION REPORT(17-11-2009).pdf

798-MUM-2004-SPECIFICATION(AMENDED)-(1-10-2009).pdf

798-MUM-2004-SPECIFICATION(AMENDED)-(17-11-2009).pdf

798-MUM-2004-SPECIFICATION(AMENDED)-(25-6-2009).pdf

798-MUM-2004-WO INTERNATIONAL PUBLICATION REPORT(28-7-2004).pdf


Patent Number 246991
Indian Patent Application Number 798/MUM/2004
PG Journal Number 12/2011
Publication Date 25-Mar-2011
Grant Date 23-Mar-2011
Date of Filing 28-Jul-2004
Name of Patentee CENTAUR PHARMACEUTICALS PVT LTD
Applicant Address 279, New Ashirwad No.5, Ram Mandir Road, Goregaon((W),MUMBAI-400 104,
Inventors:
# Inventor's Name Inventor's Address
1 ANIL MAHADEV NAIK 279, New Ashirwad No.5, Ram Mandir Road, Goregaon((W),MUMBAI-400 104,
2 SHRIKANT DATTATRAYA SAWANT Indian Nationals
3 SUPRIYA SAMAR DESAI Indain Nationals
PCT International Classification Number C07D 487/04, C07 487/00
PCT International Application Number N/A
PCT International Filing date
PCT Conventions:
# PCT Application Number Date of Convention Priority Country
1 NA