The present invention relates to novel cephalosporin compounds, pharmaceutically acceptable non-toxic salts, physiologically hydrolyzable esters, hydrates and solvates and isomers thereof which possess potent and broad antibacterial activities. The compounds of the present invention have a (1,5,6-substituted-4-aminopyrimidinium-2-yl)thiomethyl group in 3-position of the cephem nucleus and is specifically represented by the following formula(I):
                            本发明涉及新型
头孢菌素化合物,药学上可接受的无毒盐、生理可
水解的酯、
水合物和溶剂合物及其异构体,具有强大和广泛的抗菌活性。本发明的化合物在
头孢菌素核的3位具有(1,5,6-取代-4-
氨基嘧啶-2-基)
硫甲基基团,具体由以下式(I)表示: