申请人:KYORIN PHARMACEUTICAL CO., LTD.
公开号:EP0230946A2
公开(公告)日:1987-08-05
The present invention is concerned with certain novel process for the preparation of quinolonecarboxylic acid derivatives of the following formula,
wherein R¹ is a lower alkyl group, X is a chlorine or bromine atom and Y is a halogen atom, which are useful intermediates for the synthesis of antibacterial agents.
本发明涉及制备下式喹啉羧酸衍生物的某些新工艺,其中 R¹ 为低级烷基,X 为氯原子或溴原子,Y 为卤素原子,这些衍生物是合成抗菌剂的有用中间体。