申请人:Lucky, Ltd.
公开号:US05605895A1
公开(公告)日:1997-02-25
The present invention relates to a cephalosporin compound represented by the following general formula (I), its pharmaceutically acceptable non-toxic salt, physiologically hydrolyzable ester, hydrate or solvate, or isomers thereof, which is useful as an antibiotic agent: ##STR1## in which R.sup.1 represents hydrogen or an amino-protecting group, R.sup.2 and R.sup.3 can be identical or different and each represent hydrogen or a hydroxy-protecting group, or R.sup.2 and R.sup.3 together can form a diol-protecting cyclic group, R.sup.4 represents hydrogen or a carboxyl-protecting group, R.sup.5 represents hydrogen, C.sub.1-4 alkyl, alkoxycarbonyl, carboxyl or sulfomethyl, R.sup.6 represents hydrogen, amino or substituted amino, and R.sup.7 represents C.sub.1-4 alkyl, amino or substituted amino, or R.sup.5 and R.sup.6 together with the carbon atoms to which they are attached can form a 3 to 7-membered cyclic group, or R.sup.6 and R.sup.7 together with the carbon and nitrogen atoms to which they are attached can form a 3 to 7-membered heterocyclic ring which may optionally contain additional heteroatoms such as nitrogen and/or oxygen and which may be substituted with the substituents selected from C.sub.1-4 alkyl, amino and substituted amino, and Q represents CH or N.
本发明涉及一种头孢菌素化合物,其通式如下(I),其药学上可接受的非毒性盐,生理可水解酯,水合物或溶剂化物,或其异构体,用作抗生素药剂:##STR1##其中,R.sup.1代表氢或氨基保护基,R.sup.2和R.sup.3可以相同也可以不同,每个代表氢或羟基保护基,或R.sup.2和R.sup.3可以共同形成二醇保护环状基团,R.sup.4代表氢或羧基保护基,R.sup.5代表氢,C.sub.1-4烷基,烷氧基羰基,羧基或磺甲基,R.sup.6代表氢,氨基或取代氨基,R.sup.7代表C.sub.1-4烷基,氨基或取代氨基,或R.sup.5和R.sup.6与它们连接的碳原子可以形成3到7成员的环状基团,或R.sup.6和R.sup.7与它们连接的碳和氮原子可以形成3到7成员的杂环环,该环可以选择性地含有其他杂原子,如氮和/或氧,并且可以用选择的取代基取代,所述取代基选自C.sub.1-4烷基,氨基和取代氨基,Q代表CH或N。