申请人:ZENYAKU KOGYO KABUSHIKI KAISHA
公开号:EP1090920A1
公开(公告)日:2001-04-11
Cephem derivatives or pharmaceutically acceptable salts thereof represented by the formula I:
wherein
represents benzene ring, pyridine ring, pyrazine ring or 5-membered aromatic heterocycle (having one oxygen or sulfur atom as ring-constituting atom);
X and Y respectively represent hydrogen atoms or CXY represents C=N-OH;
R1 represents phenyl, thienyl or thiazolyl (which may be substituted with amino group or halogen atom); and
R2, R3 and R4 respectively represent hydrogen atoms, halogen, hydroxy C1-C6 alkyl, isothiuronium C1-C6 alkyl, amino C1-C6 alkyl or amino C1-C6 alkylthiomethyl, there being no R4 where
represents 5-membered aromatic heterocycle.
式 I 所代表的 Cephem 衍生物或其药学上可接受的盐类:
其中
代表苯环、吡啶环、吡嗪环或五元芳香杂环(具有一个氧原子或硫原子作为成环原子);
X 和 Y 分别代表氢原子或 CXY 代表 C=N-OH;
R1 代表苯基、噻吩基或噻唑基(可被氨基或卤素原子取代);以及
R2、R3 和 R4 分别代表氢原子、卤素、羟基 C1-C6烷基、异硫脲 C1-C6烷基、氨基 C1-C6烷基或氨基 C1-C6烷硫基甲基,没有 R4,其中
代表 5 元芳香杂环。