Novel quinolinecarboxylic acid derivatives of the formula:
wherein Z is
in which R1 and R2 are each hydrogen atom or a lower alkyl, R3 is hydrogen atom, hydroxy or a lower alkyl and R4 is hydrogen atom, hydroxy, amino, aminomethyl, a (lower alkyl)aminomethyl or a di(lower alkyl)-aminomethyl, and a pharmaceutically acceptable salt thereof. The compounds have excellent antibacterial activities and are useful as an antibacterial agent.
式中的新型
喹啉羧酸衍
生物:
其中 Z 为
其中 R1 和 R2 分别为氢原子或低级烷基,R3 为氢原子、羟基或低级烷基,R4 为氢原子、羟基、
氨基、
氨甲基、(低级烷基)
氨甲基或二(低级烷基)-
氨甲基,及其药学上可接受的盐。这些化合物具有优异的抗菌活性,可用作抗菌剂。