申请人:SS Pharmaceutical Co., Ltd.
公开号:US05385900A1
公开(公告)日:1995-01-31
A quinolone carboxylic acid derivative having the following formula (1), ##STR1## wherein R.sup.1 is a hydrogen atom, an alkyl group, an aralkyl group, an ester residual group which can be hydrolyzed in living bodies, R.sup.2 is a hydrogen atom or an amino group which may be substituted by one or two lower alkyl groups, X is a hydrogen atom or a halogen atom, Y is CH.sub.2, O, S, SO, SO.sub.2, or N--R.sup.3, wherein R.sup.3 is a hydrogen atom or a lower alkyl group, and Z is an oxygen atom or two hydrogen atoms; or a salt thereof; and an antimicrobial agent comprising the same. The compound exhibits a superior antimicrobial activity, especially against gram positive microorganisms, and is thus useful for the treatments and prevention of various infectious diseases in clinics.
一种喹诺酮羧酸衍生物,具有以下结构式(1),其中R.sup.1是氢原子、烷基、芳基烷基、在活体内可水解的酯残基,R.sup.2是氢原子或氨基,可能被一个或两个较低的烷基取代,X是氢原子或卤原子,Y是CH.sub.2、O、S、SO、SO.sub.2或N-R.sup.3,其中R.sup.3是氢原子或较低烷基,Z是氧原子或两个氢原子;或其盐;以及包含该化合物的抗微生物药物。该化合物表现出优越的抗微生物活性,特别针对革兰氏阳性微生物,因此在临床上对于治疗和预防各种传染病是有用的。