申请人:Imperial Chemical Industries plc
公开号:US05049558A1
公开(公告)日:1991-09-17
A cephalosporin derivative of the formula I: ##STR1## in which X is ##STR2## represents one of C-7 acyl groups known in the cephalosporin art, R3 is hydrogen or methoxy, R4 is hydrogen, optionally substituted alkyl or allyl, and R5 is an aromatic heterocyclic ring system which is linked via carbon, and which contains a quaternized nitrogen atom.
一种化学式为I的头孢菌素衍生物:##STR1## 其中X为##STR2## 代表头孢菌素领域已知的C-7酰基之一,R3为氢或甲氧基,R4为氢,可选择地取代的烷基或烯丙基,R5是通过碳链连接的含有季铵氮原子的芳香杂环环系统。