申请人:MEIJI SEIKA KAISHA LTD.
公开号:EP0723965A1
公开(公告)日:1996-07-31
A cephalosporin derivative which has a substituted or unsubstituted 2-(5-thiazolyl)vinyl group at the 3-position and is represented by the following formula (I)
wherein X is CH or N, R1 is an amino group or a protected amino group, R2 is a hydrogen atom or a hydroxyimino-protecting group, R3 is a hydrogen atom, a salt-forming cation or a carboxyl-protecting group, R4 is a hydrogen atom, and R5 is a hydrogen atom, a lower alkyl group, a halo-(lower)alkyl group or a halogen atom, is now synthetised as a cephem compound which exhibits excellent antibacterial activities and is useful as a therapeutic agent for various bacterial infections.
一种头孢菌素衍生物,其 3-位上有一个取代或未取代的 2-(5-噻唑基)乙烯基,并由下式(I)表示
其中 X 是 CH 或 N,R1 是氨基或受保护的氨基,R2 是氢原子或受保护的羟基亚氨基,R3 是氢原子、成盐阳离子或受保护的羧基,R4 是氢原子,R5 是氢原子、低级烷基、卤代(低级)烷基或卤素原子,现在合成了一种头孢菌素化合物,它具有优异的抗菌活性,可作为各种细菌感染的治疗剂。