The present invention relates to new derivatives of 7-(1-pyrrolyl)-1-ethyl-1,4-dihydro-4-oxoquinoline-3-carboxylic acid and 7-(1-pyrrolyl)-1-ethyl-1,4-dihydro-4-oxo-1,8-naphthyridine-3-carboxylic acid of general formula I: ##STR1## in which: X represents a carbon atom or a nitrogen atom, and R represents a hydrogen atom or a fluorine atom, as well as their physiologicaly acceptable alkali metal salts or alkaline earth metal salts. The derivatives of the present invention are advantageously used as antimicrobial agents, espcially as anti-bacterial and anti-fungal agents.
本发明涉及一种新的7-(1-
吡咯基)-1-乙基-1,4-二氢-4-氧基
喹啉-3-羧酸和7-(1-
吡咯基)-1-乙基-1,4-二氢-4-氧基-1,8-
萘啉-3-
羧酸的衍
生物,其一般式为I: ##STR1## 其中:X表示碳原子或氮原子,R表示氢原子或
氟原子,以及它们的生理上可接受的碱
金属盐或碱土
金属盐。本发明的衍
生物可优选用作抗微
生物剂,特别是用作抗细菌和抗真菌剂。