专利号:US-5442070-A 优先权日:1991-10-10 标 题:Derivatives of fluoro-quinoline carboxylic-3-acid and preparation therefor 发明人:DAUBIE CHRISTOPHE; LEGRAND JEAN-JACQUES; PEMBERTON CLIVE 权利人:BELLON LABOR SA ROGER 摘要:This invention relates to new derivatives of fluoro quinoline carboxylic-3 acid having general formula (I), ##STR1## wherein R is a hydrogen atom or an alkyl radical and Hal is a halogen atom, as well as salts thereof, when they exist, preparation thereof and utilization as synthesis intermediary.