申请人:Eisai Co., Ltd.
公开号:EP0333154A2
公开(公告)日:1989-09-20
A cephem derivative represented by the following formula:
wherein R₁ means a fluorine-substituted lower alkyl and A₁ denotes a cyclic or acyclic ammonio group, or a non-toxic salt thereof, is prepared by reacting a compound represented by the following formula:
wherein A₁ has the same meaning as defined above, with another compound represented by the following formula:
wherein R₁ has the same meaning as defined above, and if necessary, removing the protecting groups. The cephem compounds can be used for the manufacture of pharmaceutical compositions having antibacterial activity.
下式所代表的头孢烷烃衍生物:
其中 R₁ 表示氟取代的低级烷基,A₁ 表示环状或无环状铵基,或其无毒盐,由下式表示的化合物与另一种下式表示的化合物反应制备:
其中 A₁ 的含义与上式定义相同,与下式代表的另一种化合物反应制备:
其中 R₁的含义与上式定义相同,必要时去除保护基团。这些 cephem 化合物可用于制造具有抗菌活性的药物组合物。