Presented is a novel quinolonecarboxylic acid derivative of the formula I and its pharmaceutically acceptable salt:
wherein R₁ is hydrogen, halogen or lower alkoxy, R₂ is hydrogen, lower alkyl, lower alkoxy, -NH₂, -NHCOCH₃ or halogen,
R₃ is lower alkyl, and Z is a group represented by the formula II or III:
wherein R₄ and R₅ are identical or different and are hydrogen or lower alkyl. A method of preparation of these compound and a method of treatment of diseases caused by bacterial infection are also presented.
本文介绍了一种新型的式 I
喹啉羧酸衍
生物及其药学上可接受的盐:
其中 R₁ 是氢、卤素或低级烷氧基,R₂ 是氢、低级烷基、低级烷氧基、-NH₂、-NHCOCH₃ 或卤素、
R₃ 是低级烷基,Z 是式 II 或 III 所代表的基团:
其中 R₄ 和 R₅ 相同或不同,且为氢或低级烷基。此外,还介绍了一种制备这些化合物的方法和一种治疗由细菌感染引起的疾病的方法。