Cephalosporin antibiotics represented by the formula
wherein R is C1-C4 alkyl or a carboxy substituted alkyl group; R1 is H or C1-C4 alkyl; n is 0, 1 or 2; and A is A' independently are hydrogen, C1-C4 alkyl or allyl; and pharmaceutically acceptable salts thereof are broad spectrum antibiotics useful in the treatment of gram positive and gram negative infections of mammals.
由式(其中 R 是 C1-C4 烷基或羧基取代的烷基;R1 是 H 或 C1-C4 烷基;n 是 0、1 或 2;A 是 A'独立地为氢、C1-C4 烷基或烯丙基)所代表的
头孢菌素类抗生素及其药学上可接受的盐类是用于治疗哺乳动物革兰氏阳性和革兰氏阴性感染的广谱抗生素。