7-Piperazinyl- or 7-Morpholino-4-oxo-quinoline-3-carboxylic acid derivatives, their preparation and their use as antimicrobial agents
申请人:OTSUKA PHARMACEUTICAL CO., LTD.
公开号:EP0287951A2
公开(公告)日:1988-10-26
Novel 4-oxoquinoline-3-carboxylic acid compounds of the formula:
wherein R¹ is cyclopropyl which may have 1 to 3 substituents of alkyl and halogen; phenyl which may be substituted by 1 to 3 substituents of alkoxy, halogen and OH; alkyl which may be substituted by halogen, alkanoyloxy or OH; alkenyl; or thienyl, R² is 5- to 9-membered saturated or unsaturated heterocyclic ring which may be sustituted, R³ is H, alkyl or halogen, R⁴ is alkyl or halogen, R is H or alkyl, R¹ and R³ may be taken together to form
wherein R³¹ is H or alkyl, and X is halogen, provided that R³ and R⁴ are not simultaneously halogen, and that when R³ is H, R⁴ is alkyl, and salts thereof, said compounds having excellent antimicrobial activity and hence being useful as an antimicrobial agent, and a pharmaceutical composition containing said compound as an active ingredient.
式中的新型 4-氧代喹啉-3-羧酸化合物:
其中 R¹ 是环丙基,可具有 1 至 3 个烷基和卤素取代基;苯基,可被 1 至 3 个烷氧基、卤素和 OH 取代;烷基,可被卤素、烷氧基或 OH 取代;烯基;或噻吩基,R² 是 5 至 9 元饱和或不饱和杂环,可被取代,R³ 是 H、烷基或卤素,R⁴ 是烷基或卤素,R 是 H 或烷基,R¹ 和 R³ 可结合在一起形成
其中 R³¹ 是 H 或烷基,X 是卤素,条件是 R³ 和 R⁴ 不同时是卤素,当 R³ 是 H 时,R⁴ 是烷基,以及它们的盐,所述化合物具有优异的抗菌活性,因此可用作抗菌剂,以及含有所述化合物作为活性成分的药物组合物。