Anti-bacterial cephalosporin compounds

摘要

There are presented anti-bacterial cephalosporins having broad antimicrobial activity of the formula <IMAGE> I wherein R1 is an antibiotically active quinolonyl; R2 is selected from the group consisting of hydrogen, lower alkoxy, amino, lower alkylthio and amido; R3 is selected from the group consisting of hydrogen, and acyl group, and m is 0, 1 or 2 and the readily hydrolysable esters or salts of these compounds and hydrates of the compounds of formula I or of their esters or salts.