[EN] AN IMPROVED PROCESS FOR THE PREPARATION OF CLOPIDOGREL BISULFATE FORM-I<br/>[FR] PROCÉDÉ AMÉLIORÉ POUR LA PRÉPARATION DE BISULFATE DE CLOPIDOGREL DE FORME I
申请人:PHARMAZELL GMBH
公开号:WO2014118802A1
公开(公告)日:2014-08-07
The present invention provides an improved process for the preparation of pure Clopidogrel bisulfate Form-I of formula (I), which comprises: reacting S(+)-methyl-2- [2-(thiophen-2-yl)ethylamino]-2-(2-chlorophenyl) acetate hydrochloride (Formula II) with Formaldehyde and R-(-) Camphor sulphonic acid to yield S (+)-Clopidogrel camphor sulfonate salt (Formula III), which is on further treatment with C1-5 carboxylic acid followed by sulphuric acid to get Clopidogrel Form-I.
该发明提供了一种改进的制备纯氯吡格雷双硫酸盐I型的方法,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(式II)与甲醛和R-(-)樟脑磺酸反应,得到S(+)-氯吡格雷樟脑磺酸盐(式III),进一步经过C1-5羧酸和硫酸处理得到氯吡格雷I型。