Separation of cephalosporin isomers
    2.
    发明公开
    Separation of cephalosporin isomers 无效
    Abtrennung头孢菌素 - Isomere。

    公开(公告)号:EP0658558A1

    公开(公告)日:1995-06-21

    申请号:EP94118048.1

    申请日:1994-11-15

    IPC分类号: C07D501/24 A61K31/545

    CPC分类号: C07D501/00

    摘要: Process of depleting 7-amino-3-[(E)-2-(4-methyl-5-thiazolyl)vinyl]-3-cephem-4-carboxylic acid in Z/E mixtures of 7-amino-3-[2-(4-methyl-5-thiazolyl)vinyl]-3-cephem-4-carboxylic acid

    a) by subjecting an amine salt of a Z/E mixture of 7-amino-3-[2-(4-methyl-5-thiazolyl)vinyl]-3-cephem-4-carboxylic acid to crystallization and converting this amine salt into 7-amino-3-[2-(4-methyl-5-thiazolyl)vinyl]-3-cephem-4-carboxylic acid, or
    b) by subjecting the Z/E mixture to chromatography.

    摘要翻译: 将7-氨基-3- [2-(4-甲基-5-噻唑基)乙烯基] -3-头孢烯-4-羧酸在7-氨基-3- [2 - (4-甲基-5-噻唑基)乙烯基] -3-头孢烯-4-羧酸a)通过将7-氨基-3- [2-(4-甲基-5 - - 噻唑基)乙烯基] -3-头孢烯-4-羧酸结晶并将该胺盐转化为7-氨基-3- [2-(4-甲基-5-噻唑基)乙烯基] -3-头孢烯-4-羧酸 酸,或b)通过使Z / E混合物进行色谱分离。 ZO