Novel quinolinecarboxylic acid derivatives of the formula:
wherein Z is
in which R¹ is hydrogen atom, a halogen atom, hydroxy or a lower alkyloxy; R² is a halogen atom, hydroxy or a lower alkyloxy; R³ is a lower alkyl; and R⁴ is hydroxy or a di(lower alkyl)amino, and a pharmaceutically acceptable salt thereof, which have excellent antibacterial activities and are useful as an antibacterial agent, a pharmaceutical composition containing the same, and process for preparing the same. This invention relates also to the intermediate compound used for preparing the novel quinolinecarboxylic acid derivative.
式中的新型
喹啉羧酸衍
生物:
其中 Z 是
其中 R¹ 是氢原子、卤素原子、羟基或低级烷氧基;R² 是卤素原子、羟基或低级烷氧基;R³ 是低级烷基;R⁴ 是羟基或二(低级烷基)
氨基,及其药学上可接受的盐;这些衍
生物具有优异的抗菌活性,可用作抗菌剂,含有这些衍
生物的药物组合物,以及制备这些衍
生物的工艺。本发明还涉及用于制备新型
喹啉羧酸衍
生物的中间体化合物。