申请人:Kaken Pharmaceutical Co., Ltd.
公开号:US04691014A1
公开(公告)日:1987-09-01
A cephalosporin compound having the formula: ##STR1## wherein R.sub.1 is a hydroxy group, a lower alkanoyloxy group or a lower alkoxycarbonyloxy group, R.sub.2 is a hydrogen atom, a hydroxy group, a lower alkanoyloxy group or a lower alkoxycarbonyloxy group, R.sub.3 is a hydrogen atom, a halogen atom, a lower alkyl group, a lower alkenyl group, a lower alkoxy group or --CH.sub.2 R.sub.7 (wherein R.sub.7 is a hydrogen atom, an azido group, a lower alkanoyloxy group, a carbamoyloxy group, a substituted or unsubstituted pyridinium group or a substituted or unsubstituted heterocyclic thio group), R.sub.4 is a hydrogen atom or a carboxy-protecting group, each of R.sub.5 and R.sub.6 is a hydrogen atom or a lower alkyl group, or R.sub.5 and R.sub.6 form a cycloalkylidene group together with the carbon atom to which they are attached, and m is 0 to 1, or a pharmaceutically acceptable salt thereof.
一种头孢菌素化合物,其化学式为:##STR1##其中R.sub.1是一个羟基、一个较低的烷酰氧基团或一个较低的烷氧羰氧基团,R.sub.2是一个氢原子、一个羟基、一个较低的烷酰氧基团或一个较低的烷氧羰氧基团,R.sub.3是一个氢原子、一个卤素原子、一个较低的烷基团、一个较低的烯基团、一个较低的烷氧基团或--CH.sub.2 R.sub.7(其中R.sub.7是一个氢原子、一个叠氮基、一个较低的烷酰氧基团、一个氨甲酰氧基团、一个取代或未取代的吡啶基团或一个取代或未取代的杂环硫基团),R.sub.4是一个氢原子或一个羧基保护基团,R.sub.5和R.sub.6中的每一个是一个氢原子或一个较低的烷基团,或R.sub.5和R.sub.6与它们附着的碳原子一起形成一个环烷基亚基团,m为0至1,或其药用可接受盐。