Lorusso & Loud
Cephalosporin derivatives
 A cephalosporin derivative represented by the general formula ##STR1## wherein R.sup.1 is a hydrogen atom or a protecting group of the amino group, R.sup.2 is a hydrogen atom or a protecting group of the hydroxyl group, R.sup.3 is a hydrogen atom or a protecting group of the carboxyl group, and R.sup.4 is a hydrogen atom or an alkyl group having 1 to 4 carbon atoms, and the non-toxic salts thereof are useful as antibacterial agents. 
Taisho Pharmaceutical Co., Ltd.
C Y
C07D Y02P
inventional additional
Akira Yoshiaki Chihiro Hiroshi Kaoru
Onodera Watanabe Yokoo Fukushima Sota