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    • 35. 发明授权
    • Carboxyalkylureido cephalosporins
    • 羧甲基脲基头孢菌素
    • US4097670A
    • 1978-06-27
    • US673222
    • 1976-04-05
    • Hermann BreuerUwe D. Treuner
    • Hermann BreuerUwe D. Treuner
    • C07D333/24C07D501/36
    • C07C265/00C07D333/24
    • 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.
    • 其中R为氢,低级烷基,苯基 - 低级烷基,二苯基 - 低级烷基,三(低级烷基)甲硅烷基,三卤代乙基,成盐离子或基团R 1的羧基烷基脲基头孢菌素为其中R为氢, 甲氧基 A是1至6个碳的直链或支链亚烷基; R2是氢,低级烷基,苯基,苯基 - 低级烷基,二苯基 - 低级烷基,碱金属离子或碱土金属离子; R3是氢或低级烷基; R4是氢,低级烷基,环烷基,环烯基,环链二烯基,苯基,苯基 - 低级烷基,取代的苯基,取代的苯基 - 低级烷基或某些杂环基; R5是氢或低级烷基; R6是低级烷基; X是氢,低级烷酰氧基,或者某些杂硫基; 被披露。 这些化合物可用作抗菌剂。