7-methoxy cephalosporin derivative

摘要

The 7-methoxy-3-heterocyclic thiomethyl cephalosporin derivative possessing excellent antimicrobial activity represented by the general formula <IMAGE> wherein R1 represents <IMAGE> group or HOOC- group, R2 represents a nitrogen-containing heterocyclic group, and M represents a hydrogen atom or a cation residue forming a salt.