Hamre, Schumann, Mueller & Larson, P.C.
Cephem derivative having catechol group
A compound represented by formula (I) or a pharmaceutically acceptable salt thereof wherein A represents a group represented by one of formulae (i)-(iii); B represents a group represented by formula (v) or (vi); and E represents a substituted or unsubstituted heterocyclic group having a cationic nitrogen atom.
SHIONOGI & CO., LTD
A C A C
A61P C07D A61P C07D
inventional inventional inventional inventional
Jun Masayuki Kenji
Sato Sano Yamawaki