Method for preparation of cephalosporin compounds

摘要

A method for preparing a cephalosporin compound represented by the general formula (III) <IMAGE> (III) (wherein R represents hydrogen or methyl group) or a pharmaceutically acceptable salt thereof, which is characterized by reacting 7-amino-3-(benzimidazol-2-yl)-thiomethyl-3-cephem-4-carboxylic acid represented by the general formula (I) <IMAGE> (I) or a salt thereof with a compound represented by general formula (II) <IMAGE> (II) wherein R represents hydrogen or methyl group.