申请人:Bayer Aktiengesellschaft
公开号:US05173484A1
公开(公告)日:1992-12-22
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.
化学式为##STR1##的抗菌活性喹诺酮或萘啶酮羧酸衍生物,其中R1代表各种有机基团,R2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,R3代表氢或氨基,R4代表##STR2##的基团,A代表N或C-R5,其中R5代表氢、卤素甲基、氰基或硝基,或者与R1一起形成结构##STR3##的桥。当R2为氢时,该羧酸的药用水合物、酸加成盐、碱金属盐、碱土金属盐、银盐或胍啶盐。