申请人:Toyama Chemical Co., Ltd.
公开号:US04698352A1
公开(公告)日:1987-10-06
This invention relates to a novel 4-oxo-1,4-dihydronicotinic acid derivative ##STR1## or a salt thereof, wherein R.sup.1 is hydrogen or carboxyl-protecting group; R.sup.2 is substituted phenyl and naphthyl, or a substituted or unsubstituted heterocyclic group; and R.sup.3 is haloalkyl, aminoalkyl, or substituted or unsubstituted alkenyl, phenylalkenyl, naphthylalkenyl, phenylalkyl, naphthylalkyl, phenylalkynyl, naphthylalkynyl, heterocyclic alkyl, heterocyclic alkenyl, phenyl, naphthyl, cycloalkyl, cycloalkenyl, carboxylic acyl, iminoalkyl, heterocyclic or bridged hydrocarbon, which has a broad antibacterial spectrum and a low toxicity, and are useful for treatment of diseases of human beings and animals, to a process for producing the same and to an antibacterial agent containing the same.
这项发明涉及一种新颖的4-氧代-1,4-二氢烟酸衍生物##STR1##或其盐,其中R.sup.1是氢或羧基保护基;R.sup.2是取代苯基和萘基,或取代或未取代的杂环基;R.sup.3是卤代烷基,氨基烷基,或取代或未取代的烯基,苯基烯基,萘基烯基,苯基烷基,萘基烷基,苯基炔基,萘基炔基,杂环烷基,杂环烯基,苯基,萘基,环烷基,环烯基,羧基酰基,亚胺烷基,杂环或桥接碳氢化合物,具有广泛的抗菌谱和低毒性,可用于治疗人类和动物的疾病,以及生产该化合物的方法和含有该化合物的抗菌剂。