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公开(公告)号:US4616080A
公开(公告)日:1986-10-07
申请号:US627321
申请日:1984-07-02
申请人: Ta-Sen Chou , Robert E. Lakin
发明人: Ta-Sen Chou , Robert E. Lakin
IPC分类号: C07D501/00 , A61K31/545 , C07D20060101 , C07D403/00 , C07D501/46 , C07D501/56
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。