[EN] PROCESSES FOR THE PREPARATION OF ZOLPIDEM AND ITS HEMITARTRATE<br/>[FR] NOUVEAU POLYMORPHE D'HEMITARTRATE DE ZOLPIDEM
申请人:RANBAXY LAB LTD
公开号:WO2006008636A3
公开(公告)日:2006-08-17
[EN] NOVEL POLYMORPH OF ZOLPIDEM HEMITARTRATE<br/>[FR] NOUVEAU POLYMORPHE D'HEMITARTRATE DE ZOLPIDEM
申请人:RANBAXY LAB LTD
公开号:WO2006008636A2
公开(公告)日:2006-01-26
The invention relates to the preparation of a non-hygroscopic polymorphic form of zolpidem hemitartrate, designated as Form I, and pharmaceutical compositions including it. The invention also relates to use of the compositions for treating anxiety, sleep disorders and convulsions. The invention also relates to a process for the preparation of zolpidem or pharmaceutically acceptable salts thereof by condensing 3-bromo-N,N-dimethyl-4-oxo-4-p-tolyl-butyramide wih 2-amino-5-methylpyridine in a polar aprotic solvent.