申请人:Meiji Seika Kabushiki Kaisha
公开号:US05663162A1
公开(公告)日:1997-09-02
Compounds represented by the following formula (I), that is, cephem derivatives having substituted or unsubstituted imidazo[5,1-b]thiazolium-6-yl as a substituent at the 3-position of the cephem ring: ##STR1## wherein X represents CH or N, R.sup.1 represents H, alkyl, alkenyl or the like, and R.sup.2, R.sup.3, R.sup.4 and R.sup.5 represent H, alkyl, carbamoyl, amino or the like. The above compounds have excellent antibacterial activity, and useful as medicines for the treatment of various infectious diseases caused by bacteria.
以下公式(I)所代表的化合物,即在头孢环的3位取代或未取代的咪唑[5,1-b]噻唑-6-基作为取代基的头孢菌素衍生物:##STR1## 其中X代表CH或N,R.sup.1代表H、烷基、烯基或类似物,而R.sup.2、R.sup.3、R.sup.4和R.sup.5代表H、烷基、氨基甲酰基、氨基或类似物。以上化合物具有优异的抗菌活性,并可用作治疗由细菌引起的各种传染病的药物。