Simplified process of forming crystalline ceftazidime pentahydrate
    1.
    发明授权
    Simplified process of forming crystalline ceftazidime pentahydrate 失效
    结晶头孢他啶五水合物的简化方法

    公开(公告)号:US4616080A

    公开(公告)日:1986-10-07

    申请号:US627321

    申请日:1984-07-02

    CPC分类号: C07D501/46 Y02P20/55

    摘要: Ceftazidime pentahydrate in crystalline form is provided in a one-step process comprising acidic removal of protecting groups from an amino-protected and carboxy-protected ceftazidime, separation of aqueous phase after addition of a water-immiscible organic solvent, and precipitation of pentahydrate by adjusting pH of aqueous phase from about 3.5 to about 4.5.

    摘要翻译: 以一步法提供结晶形式的头孢他啶五水合物,其包括从氨基保护的和羧基保护的头孢他啶中除去保护基,加入水不混溶的有机溶剂后水相的分离,以及通过调节五水合物的沉淀 水相的pH为约3.5至约4.5。