申请人:Kim Eun Sook
公开号:US20080214821A1
公开(公告)日:2008-09-04
Optically pure clopidogrel can be prepared in a high yield by optically resolving a racemic form of the compound of formula (II) using an optically active amine to form the optically active form of the compound of formula (III) or its acid-addition salt; and methylating the compound of formula (III) or its acid-addition salt.
通过使用光学活性胺使化合物的外消旋形式转化为化合物的光学活性形式(III)或其酸盐加成物,并对化合物(III)或其酸盐加成物进行甲基化,可以高产率地制备光学纯的氯吡格雷。