申请人:Senju Pharmaceutical Co., Ltd.
公开号:US05753658A1
公开(公告)日:1998-05-19
Presented is a novel quinolonecarboxylic acid derivative of the formula I and its pharmaceutically acceptable salt: ##STR1## wherein R.sub.1 is hydrogen, halogen or lower alkoxy, R.sub.2 is hydrogen, lower alkyl, lower alkoxy, --NH.sub.2, --NHCOCH.sub.3 or halogen, R.sub.3 is lower alkyl, and z is a group represented by the formula II or III: ##STR2## wherein R.sub.4 and R.sub.5 are identical or different and are hydrogen or lower alkyl. A method of preparation of these compound and a method of treatment of diseases caused by bacterial infection are also presented.
介绍一种新型喹诺酮羧酸衍生物及其药用盐,其化学式为I:##STR1## 其中,R.sub.1为氢、卤素或低碳基氧基,R.sub.2为氢、低碳基、低碳基氧基、--NH.sub.2、--NHCOCH.sub.3或卤素,R.sub.3为低碳基,z为公式II或III所表示的基团:##STR2## 其中,R.sub.4和R.sub.5相同或不同,为氢或低碳基。还提供了这些化合物的制备方法和治疗细菌感染引起的疾病的方法。