Quinolonecarboxylic acid derivatives and their preparation
申请人:Kyorin Pharmaceutical Co., Ltd.
公开号:US04791118A1
公开(公告)日:1988-12-13
Quinolonecarboxylic acid derivatives of the following formula, ##STR1## wherein R is hydrogen atom or lower alkyl group, Alk is lower alkylene group and X is hydrogen atom or halogen atom; the hydrates and pharmaceutically acceptable salts thereof are useful as antibacterial agent.