申请人:E. R. Squibb & Sons, Inc.
公开号:US04096329A1
公开(公告)日:1978-06-20
Cyanoalkylureido 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 or ##STR3## R.sub.2 is phenyl, 2-thienyl, or 3-thienyl; 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, ##STR4## or certain heterothio groups; are disclosed. These compounds are useful as antibacterial agents.
氰基烷基
脲基
头孢菌素的
化学式为##STR1##其中R为氢、较低的烷基、苯基较低的烷基、二苯基较低的烷基、三(较低的烷基)
硅基、三卤乙基、形成盐离子的基团或##STR2##R.sub.1为氢或甲氧基;A为直链或支链烷基或##STR3##R.sub.2为苯基、2-
噻吩基或3-
噻吩基;R.sub.3为氢或较低的烷基;R.sub.4为氢、较低的烷基、环烷基、环烯基、环二烯基、苯基、苯基较低的烷基、取代苯基、取代苯基较低的烷基或某些杂环基团;R.sub.5为氢或较低的烷基;R.sub.6为较低的烷基;X为氢、较低的烷酰氧基、##STR4##或某些杂
硫基团;这些化合物可用作抗菌剂。