| 摘要 |
New cephalosporins of the general formula: <IMAGE> (I) in which R is alkyl, L-2-amino-2-carboxyethyl, phenyl or various heterocyclic rings, R' is a hydrogen atom or a radical of the general formula: <IMAGE> (II) and R DEG is hydrogen, alkyl, vinyl, cyanomethyl or a carboxyalkyl radical of the general formula: <IMAGE> (III) and also their salts, their preparation and the pharmaceutical compositions in which they are present. |
