[EN] PROCESS FOR PREPARATION OF CHIRAL AMLODIPINE SALTS<br/>[FR] PROCEDE DE PREPARATION DE SELS CHIRAUX D'AMLODIPINE
申请人:COUNCIL SCIENT IND RES
公开号:WO2005049571A1
公开(公告)日:2005-06-02
A process for the preparation of pharmaceutically acceptable salts of chiral Amlodipine namely S(-) Amlodipine and R(+) Amlodipine without isolation of the chiral free base wherein the product has optical purity ranging between 96-99% is described in the present invention. The process comprises resolving RS amlodipine base using L(+) or D(-) tartaric acid followed by reaction of the separated tartrate salt with an organic acid to obtain the salt corresponding to the acid used in ee ranging from 96-99%.
本发明描述了一种制备手性氨氯地平的药物可接受盐的过程,即S(-)氨氯地平和R(+)氨氯地平的盐,无需分离手性自由基,其中产品的光学纯度在96-99%之间。该过程包括使用L(+)或D(-)酒石酸分离RS氨氯地平碱,随后将分离的酒石酸盐与有机酸反应,以获得与所使用酸相对应的盐,其ee在96-99%之间。