申请人:Fujisawa Pharmaceutical Company, Ltd.
公开号:US04983596A1
公开(公告)日:1991-01-08
The invention relates to a compound of antimicrobial activity, of the formula: ##STR1## in which R.sup.1 is carboxy or protected carboxy, R.sup.2 is hydroxy(lower)alkyl or protected hydroxy(lower)alkyl, R.sup.3 is hydrogen or lower alkyl, R.sup.4 is 2-fluoroethyl, 2-chloroethyl, 2-fluoropropyl or 4-fluorobutyl, R.sup.5 is hydrogen, lower alkanimidoyl, unsubstituted lower cycloalkenyl or substituted by a group consisting of oxo and amino, or imino-protective group, and A is lower alkylene, or pharmaceutically acceptable salts thereof.
本发明涉及一种具有抗微生物活性的化合物,其化学式为:##STR1## 其中,R.sup.1是羧基或受保护的羧基,R.sup.2是羟基(较低)烷基或受保护的羟基(较低)烷基,R.sup.3是氢或低碳基,R.sup.4是2-氟乙基,2-氯乙基,2-氟丙基或4-氟丁基,R.sup.5是氢,低碳基酰胺基,未取代的低环烷基或由氧代和氨基组成的基团取代的低环烷基,或亚氨基保护基,A是低碳基烷基,或其药学上可接受的盐。