申请人:E. R. Squibb & Sons, Inc.
公开号:US04169947A1
公开(公告)日:1979-10-02
7.beta.-[[[2-Acylamino]-1,2-dioxoethyl]amino]acyl cephalosporins of the formula ##STR1## wherein R is hydrogen, lower alkyl, phenyl-lower alkyl, diphenyl-lower alkyl, tri(lower alkyl)silyl, trihaloethyl or a salt forming ion; R.sub.1 is hydrogen, lower alkyl, saturated or unsaturated cycloalkyl, phenyl, phenyl-lower alkyl, substituted phenyl or certain heterocyclic groups; R.sub.2 is hydrogen or methoxy; R.sub.3 is hydrogen, lower alkyl or phenyl-lower alkyl; R.sub.4 is lower alkyl, cycloalkyl, phenyl, substituted phenyl or certain heterocyclic groups; and X is hydrogen, lower alkanoyloxy, carbamoyloxy, lower alkoxy, lower alkylthio, ##STR2## or certain heterothio groups, are useful as antibacterial agents.
公式为##STR1##的7.beta.-[[[2-酰胺基]-1,2-二氧乙基]氨基]酰基头孢菌素,其中R为氢,低碳基,苯基-低碳基,二苯基-低碳基,三(低碳基)硅基,三卤乙基或形成离子的盐; R.sub.1为氢,低碳基,饱和或不饱和环烷基,苯基,苯基-低碳基,取代的苯基或某些杂环基; R.sub.2为氢或甲氧基; R.sub.3为氢,低碳基或苯基-低碳基; R.sub.4为低碳基,环烷基,苯基,取代的苯基或某些杂环基; X为氢,低碳酰氧基,氨基甲酰氧基,低碳氧基,低碳硫基,##STR2##或某些杂硫基,可用作抗菌剂。