申请人:E. R. Squibb & Sons, Inc.
公开号:US04097670A1
公开(公告)日:1978-06-27
Carboxyalkylureido cephalosporins of the formula ##STR1## wherein R is hydrogen, lower alkyl, phenyl-lower alkyl, diphenyl-lower alkyl, tri(lower alkyl)silyl, trihaloethyl, a salt forming ion, or the group ##STR2## R.sub.1 is hydrogen or methoxy; A is straight or branched chain alkylene of 1 to 6 carbons; R.sub.2 is hydrogen, lower alkyl, phenyl, phenyl-lower alkyl, diphenyl-lower alkyl, alkali metal ion or alkaline earth metal ion; R.sub.3 is hydrogen or lower alkyl; R.sub.4 is hydrogen, lower alkyl, cycloalkyl, cycloalkenyl, cycloalkadienyl, phenyl, phenyl-lower alkyl, substituted phenyl, substituted phenyl-lower alkyl, or certain heterocyclic groups; R.sub.5 is hydrogen or lower alkyl; R.sub.6 is lower alkyl; and X is hydrogen, lower alkanoyloxy, ##STR3## or certain heterothio groups; are disclosed. These compounds are useful as antibacterial agents.
公开了
化学式为##STR1##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,盐形成离子,或者是##STR2##R.sub.1为氢或甲氧基;A为直链或分支链烷基,其碳数为1至6;R.sub.2为氢,低碳基,苯基,苯基-低碳基,二苯基-低碳基,碱
金属离子或碱土
金属离子;R.sub.3为氢或低碳基;R.sub.4为氢,低碳基,环烷基,环烯基,
环戊二烯基,苯基,苯基-低碳基,取代苯基,取代苯基-低碳基,或某些杂环基团;R.sub.5为氢或低碳基;R.sub.6为低碳基;X为氢,低碳酰氧基,##STR3##或某些杂
硫基团;这些化合物可用作抗菌剂。