申请人:E. R. Squibb & Sons, Inc.
公开号:US03996218A1
公开(公告)日:1976-12-07
Ureido cephalosporin derivatives 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, lower alkyl, cycloalkyl, cycloalkenyl, cycloalkadienyl, phenyl, phenyl-lower alkyl, substituted phenyl or phenyl-lower alkyl, or certain heterocyclic groups; R.sub.2 is hydrogen or lower alkyl; R.sub.3 is hydrogen or methoxy; R.sub.4 is hydrogen, halogen, lower alkyl, or lower alkoxy; R.sub.5 is hydrogen or lower alkyl; R.sub.6 is lower alkyl, phenyl, or phenyl-lower alkyl; are disclosed. These compounds are useful as antibacterial agents.
本发明涉及尿素头孢菌素衍生物,其化学式为 ## 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,成盐离子或基团 ## STR2 ## R.sub.1为氢,低碳基,环烷基,环烯基,环戊二烯基,苯基,苯基低碳基,取代苯基或苯基低碳基,或某些杂环基团;R.sub.2为氢或低碳基;R.sub.3为氢或甲氧基;R.sub.4为氢,卤素,低碳基或低碳氧基;R.sub.5为氢或低碳基;R.sub.6为低碳基,苯基或苯基低碳基。这些化合物可用作抗菌剂。