The present invention discloses a rapid resolution process of racemic clopidogrel base followed by conversion of the resolved (S) isomer to crystalline Clopidogrel bisulfate Form I. The invention also discloses novel racemization process of the unwanted (R) isomer of clopidogrel base. The invention further discloses an improved process for preparation of acid addition salts of clopidogrel.
本发明揭示了一种快速分离消旋
氯吡格雷碱的过程,随后将分离得到的(S)异构体转化为结晶的
氯吡格雷双
硫酸盐I型。该发明还揭示了一种新的消旋
氯吡格雷碱不需要的(R)异构体的消旋过程。该发明进一步揭示了一种改进的制备
氯吡格雷酸加成盐的过程。