申请人:Takeda Chemical Industries, Ltd.
公开号:US04971963A1
公开(公告)日:1990-11-20
An antibacterial agent is provided which is a cephem compound of the formula: ##STR1## wherein R.sup.1 is an acyl group; R.sup.2 is a carboxy group which may be esterified; R.sup.3 is a hydrogen atom, a lower alkyl group or cyano group; R.sup.4 is a hydrogen atom or a lower alkyl group, or R.sup.4 together with R.sup.3 is a methylene chain having 2 or 3 carbon atoms; R.sup.5 is a hydrogen atom or a lower alkyl group; A is an optionally substituted bivalent aromatic heterocyclic group which is bonded to a ring-constituting carbon atom with the adjacent sulfur atom; Y is a binding arm, sulfur or oxygen atom, --NH--, --CONH-- or --NHCO--; Z is a binding bond or --NH--; m is an integer of 0 to 4 and n is an integer of 0 to 6, or a pharmacologically acceptable salt thereof.
提供一种抗菌剂,其为以下结构的头孢烯化合物:##STR1## 其中R.sup.1是酰基;R.sup.2是羧基,可能酯化;R.sup.3是氢原子、较低烷基基团或氰基;R.sup.4是氢原子或较低烷基基团,或R.sup.4与R.sup.3一起是具有2或3个碳原子的亚甲基链;R.sup.5是氢原子或较低烷基基团;A是可选地取代的双价芳香杂环基团,与相邻的硫原子连接到构成环的碳原子上;Y是一个结合臂、硫原子或氧原子,--NH--,--CONH--或--NHCO--;Z是一个结合键或--NH--;m是0到4之间的整数,n是0到6之间的整数,或其药理学上可接受的盐。