[EN] IMPROVED PROCESS FOR PREPARATION OF CLOPIODOGREL BISULFATE CRYSTALLINE FORM-1<br/>[FR] PROCEDE AMELIORE DE PREPARATION DE LA FORME CRISTALLINE 1 DU BISULFATE DE CLOPIDROGEL
申请人:PHARMAZELL GMBH
公开号:WO2011055378A1
公开(公告)日:2011-05-12
An improved process for preparing crystalline form-1 of (S)-methyl 2-(2-chlorophenyl)-2-6, 7-dihydrothieno[3, 2-c] pyridine-5(4H)-yl}acetate bisulfate (clopidogrel bisulfate) of formula I is provided The preparation comprises the straight conversion of an uncyclized material of (S)-methyl 2-[2- (thiophen-2-yl)ethylamino]-2-(2-chlorophenyl)acetate hydrochloride into clopidogrel bisulfate crystalline form-1 without any degradation of clopidogrel base
提供了一种改进的方法,用于制备式I的(S)-甲基2-(2-氯苯基)-2-6,7-二氢噻吩[3,2-c]吡啶-5(4H)-基}乙酸甲酯双硫酸盐(氯吡格雷双硫酸盐)的晶型1。该制备方法包括将(S)-甲基2-[2-(噻吩-2-基)乙基氨基]-2-(2-氯苯基)乙酸盐酸盐的未环化物直接转化为晶型1的氯吡格雷双硫酸盐,而不会降解氯吡格雷基础物质。