申请人:Banyu Pharmaceutical Co., Ltd.
公开号:US05153188A1
公开(公告)日:1992-10-06
A compound represented by the general formula (I): ##STR1## wherein R.sup.1 is a hydrogen atom or a methyl group; R.sup.2 and R.sup.3, which may be the same or different, each represents a hydrogen atom or a lower alkyl group, or taken together with the adjacent nitrogen atom, jointly represent a heterocyclic group selected from the group consisting of an aziridinyl group, an azetidinyl group, a pyrrolidinyl group, a piperidino group, a piperazinyl group, a 4-lower alkylpiperazinyl group, a morpholino group and a thiomorpholino group; and A is a single bond, a lower alkylene group, a lower alkenylene group or a lower alkynylene group; or a pharmaceutically acceptable salt or ester thereof. The compound of the general formula (I) and their salts or esters exhibit excellent antibacterial activity.
化合物的一般式为(I):##STR1##
其中,R.sup.1是氢原子或甲基基团;R.sup.2和R.sup.3可以相同也可以不同,分别代表氢原子或低级烷基基团,或与相邻的氮原子共同表示所选自的杂环基团,所选自的杂环基团包括氮杂环基团、氮杂环丙基基团、吡咯烷基团、哌啶基团、哌嗪基团、4-低级烷基哌嗪基团、吗啉基团和硫代吗啉基团;A是单键、低级烷基亚ethylene基团、低级烯基亚ethylene基团或低级炔基亚ethylene基团;或其药学上可接受的盐或酯。该一般式化合物及其盐或酯具有出色的抗菌活性。