7-Acetamidocephalosporins are disclosed herein which are substituted at position 3 of the cephalosporin nucleus with the group ##STR1## wherein R.sub.2 is selected from the group hydrogen, amino, C.sub.1 to C.sub.6 alkylamino and di-C.sub.1 to C.sub.6 alkylamino and R.sub.3, R.sub.4 and R.sub.5 are the same or different and are selected from the group hydrogen, hydroxy, C.sub.1 to C.sub.6 alkyl, C.sub.1 to C.sub.6 alkoxy, trifluoromethyl, phenyl, substituted phenyl, heterocyclic aryl and R.sub.3 and R.sub.4 or R.sub.4 and R.sub.5 taken together are the moiety --CH.sub.2 (CH.sub.2).sub.2 CH.sub.2 --, and the pharmaceutically acceptable non-toxic salts thereof.
本文披露了在
头孢菌素核中的第3位用以下基团置换的7-乙酰
氨基
头孢菌素:##STR1## 其中R.sub.2选自氢、
氨基、C.sub.1到C.sub.6烷基
氨基和二C.sub.1到C.sub.6烷基
氨基,R.sub.3、R.sub.4和R.sub.5相同或不同,选自氢、羟基、C.sub.1到C.sub.6烷基、C.sub.1到C.sub.6烷氧基、三
氟甲基、苯基、取代苯基、杂环芳基和R.sub.3和R.sub.4或R.sub.4和R.sub.5一起取代为--CH.sub.2(CH.sub.2).sub.2CH.sub.2--,以及其药学上可接受的无毒盐。