申请人:Meiji Seika Kabushiki Kaisha
公开号:US05883089A1
公开(公告)日:1999-03-16
Compounds, represented by the following formula (I), having a .beta.-(substituted or unsubstituted imidazo\x9b5,1-b!thiazolyl)vinyl group at the 3-position of the cephem ring and a salt and an ester thereof are disclosed. The compounds have antibacterial activity against a very wide spectrum of bacteria and potent antibacterial activity against Gram-positive bacteria, Gram-negative bacteria, and resistant bacteria. ##STR1## wherein X represents CH or N, R.sup.1 represents a hydrogen atom or an amino protective group, R.sup.2 represents a hydrogen atom, a C.sub.1-6 alkyl group, a C.sub.3-7 cycloalkyl group, or a hydroxy protective group, R.sup.3 is absent or represents a hydrogen atom, a salt forming cation, or a carboxyl protective group, R.sup.4, R.sup.5, and R.sup.6, which may be the same or different, each independently represent a hydrogen atom or a C.sub.1-6 alkyl group, R.sup.7+ is absent or a cation of a C.sub.1-6 alkyl, and n is an integer of 0 to 1.
化合物,由以下通式(I)表示,在头孢环的3位上具有β-(取代或未取代的咪唑并[5,1-b]噻唑基)乙烯基团,以及其盐和酯被公开。这些化合物对非常广泛的细菌谱具有抗菌活性,并对革兰氏阳性细菌、革兰氏阴性细菌和耐药细菌具有强大的抗菌活性。 ##STR1## 其中X代表CH或N,R1代表氢原子或氨基保护基团,R2代表氢原子、C1-6烷基团、C3-7环烷基团或羟基保护基团,R3不存在或代表氢原子、成盐阳离子或羧基保护基团,R4、R5和R6可以相同或不同,各自独立地代表氢原子或C1-6烷基团,R7+不存在或代表C1-6烷基的阳离子,n是0至1的整数。