申请人:Wakunaga Pharmaceutical Co., Ltd.
公开号:US06133284A1
公开(公告)日:2000-10-17
A pyridonecarboxylic acid derivative represented by the following general formula (1): ##STR1## [wherein R.sup.1 represents hydrogen atom or a carboxyl protective group; R.sup.2 represents hydroxyl group, a lower alkoxy group, or a substituted or unsubstituted amino group; R.sup.3 represents hydrogen atom or a halogen atom; R.sup.4 represents hydrogen atom or a halogen atom; R.sup.5 represents a halogen atom or an optionally substituted saturated cyclic amino group; R.sup.6 represents hydrogen atom, a halogen atom, nitro group, or an optionally protected amino group; X, Y and Z may be the same or different and respectively represent nitrogen atom, --CH.dbd. or --CR.sup.7 .dbd. (wherein R.sup.7 represents a lower alkyl group, a halogen atom, or cyano group) (with the proviso that at least one of X, Y and Z represent the nitrogen atom), and W represents nitrogen atom or --CR.sup.8 .dbd. (wherein R.sup.8 represents hydrogen atom, a halogen atom, or a lower alkyl group)] or its salt, as well as an antibacterial agent containing such compound are provided.
提供一种由以下通式(1)表示的吡啶酮羧酸衍生物:##STR1## [其中,R.sup.1表示氢原子或羧基保护基;R.sup.2表示羟基、低级烷氧基或取代或未取代的氨基;R.sup.3表示氢原子或卤素原子;R.sup.4表示氢原子或卤素原子;R.sup.5表示卤素原子或可选取代的饱和环氨基基团;R.sup.6表示氢原子、卤素原子、硝基基团或可选保护的氨基基团;X、Y和Z可以相同也可以不同,分别表示氮原子、--CH.dbd.或--CR.sup.7.dbd.(其中,R.sup.7表示低级烷基、卤素原子或氰基)(但至少其中一个为氮原子),W表示氮原子或--CR.sup.8.dbd.(其中,R.sup.8表示氢原子、卤素原子或低级烷基)]或其盐,以及含有此类化合物的抗菌剂。