申请人:Bayer Aktiengesellschaft
公开号:US05284842A1
公开(公告)日:1994-02-08
An antibacterially active quinolone or naphthyridonecarboxylic acid derivative of the formula ##STR1## in which R.sup.1 stands for various organic radical, R.sup.2 stands for hydrogen, alkyl having 1 to 4 carbon atoms or (5-methyl-2-oxo-1,3-dioxol-4-yl)methyl, R.sup.3 stands for hydrogen or amino, R.sup.4 stands for a radical of the formula ##STR2## A stands for N or C--R.sup.5, wherein R.sup.5 stands for hydrogen, halogen methyl, cyano or nitro or else together with R.sup.1 can form a bridge of the structure ##STR3## or a pharmaceutically utilizable hydrate, acid addition salt, alkali metal salt, alkaline earth metal salt, silver salt or guanidinium salt of the carboxylic acid when R.sup.2 is hydrogen.
一种具有抗菌活性的喹诺酮或萘啶酮羧酸衍生物的化学式为##STR1##其中R.sup.1代表各种有机基团,R.sup.2代表氢,1至4个碳原子的烷基或(5-甲基-2-氧代-1,3-二氧杂环戊-4-基)甲基,R.sup.3代表氢或氨基,R.sup.4代表式##STR2##A代表N或C--R.sup.5,其中R.sup.5代表氢,卤素甲基,氰基或硝基,或者与R.sup.1一起形成结构的桥梁##STR3##或药物可利用的羧酸的水合物,酸加成盐,碱金属盐,碱土金属盐,银盐或羟基胍盐,当R.sup.2为氢时。