Process for the production of cephalosporins
    2.
    发明公开
    Process for the production of cephalosporins 失效
    生产头孢菌素的方法

    公开(公告)号:EP0908461A1

    公开(公告)日:1999-04-14

    申请号:EP98124140.9

    申请日:1994-10-21

    IPC分类号: C07D501/04 C07D501/18

    CPC分类号: C07D501/00

    摘要: A process for etherifying the hydroxymethyl group in position 3 of a cephalosporin by reaction of a 3-hydroxymethyl cephalosporin with an dioxycarbenium-tetrafluoroborate.

    摘要翻译: 通过使3-羟甲基头孢菌素与四氟硼酸二氧碳鎓反应来醚化头孢菌素3位羟甲基的方法。

    New process for the production of ceftriaxone
    3.
    发明公开
    New process for the production of ceftriaxone 失效
    Verfahren zur Herstellung von Ceftriaxon。

    公开(公告)号:EP0556768A2

    公开(公告)日:1993-08-25

    申请号:EP93102381.6

    申请日:1993-02-16

    IPC分类号: C07D501/36 C07D501/00

    CPC分类号: C07D501/00

    摘要: The invention relates to a new process for the production of the disodium salt hemiheptahydrate of ceftriaxone by reacting 7-amino-3-{[(2,5-dihydro-6-hydroxy-2-methyl-5-oxo-1,2,4-triazin-3-yl)thio]methyl}-3-cephem-4-carboxylic acid with 2-(2-aminothiazol-4-yl)-2-syn-methoximinoacetic acid-(2-benzthiazolyl)thiolester in the presence of a base, characterized in that the reaction and the crystallization of the disodium salt hemiheptahydrate of ceftriaxone are carried out in aqueous acetone.

    摘要翻译: 本发明涉及一种通过7-氨基-3 - {[(2,5-二氢-6-羟基-2-甲基-5-氧代-1,2,4-恶二唑-5-基) 4-三嗪-3-基)t H]]甲基} -3-头孢烯-4-羧酸与2-(2-氨基噻唑-4-基)-2-顺 - 邻甲脒基乙酸 - (2-苯并噻唑基)硫醇酯在 碱的存在,其特征在于头孢曲松二钠盐半水合物的反应和结晶在丙酮水溶液中进行。

    Process for the preparation of cephalosporins
    5.
    发明公开
    Process for the preparation of cephalosporins 失效
    Verfahren zur Herstellung von Cephalosporinen。

    公开(公告)号:EP0649849A1

    公开(公告)日:1995-04-26

    申请号:EP94116660.5

    申请日:1994-10-21

    IPC分类号: C07D501/04 C07D501/18

    CPC分类号: C07D501/00

    摘要: A process for etherifying the hydroxymethyl group in position 3 of a cephalosporin by reaction of a 3-hydroxymethyl cephalosporin with an dioxycarbenium-tetrafluoroborate.

    摘要翻译: 通过3-羟甲基头孢菌素与二氟碳鎓四氟硼酸盐的反应醚化头孢菌素3位的羟甲基的方法。

    New process for the production of ceftriaxone
    6.
    发明公开
    New process for the production of ceftriaxone 失效
    新方法生产CEFTRIAXONE

    公开(公告)号:EP0556768A3

    公开(公告)日:1993-11-24

    申请号:EP93102381.6

    申请日:1993-02-16

    IPC分类号: C07D501/36 C07D501/00

    CPC分类号: C07D501/00

    摘要: The invention relates to a new process for the production of the disodium salt hemiheptahydrate of ceftriaxone by reacting 7-amino-3-{[(2,5-dihydro-6-hydroxy-2-methyl-5-oxo-1,2,4-triazin-3-yl)thio]methyl}-3-cephem-4-carboxylic acid with 2-(2-aminothiazol-4-yl)-2-syn-methoximinoacetic acid-(2-benzthiazolyl)thiolester in the presence of a base, characterized in that the reaction and the crystallization of the disodium salt hemiheptahydrate of ceftriaxone are carried out in aqueous acetone.