Patent ID: 6187916
Filing Date: 2001-02-13
Classification: C07D

Abstract:
A .beta.-lactam of the formula I: ##STR19##in which:R.sub.2' represents RO--, RS--, or RR'N-- in which R represents a cycloalkyl, cycloalkenyl, or unsaturated or saturated heterocyclic radical containing 3 to 15 carbon atoms, wherein said heterocyclic radical contains at least one oxygen, nitrogen, or sulfur atom. R' is hydrogen or R as defined above, or R and R' are together an alkylene, alkenylene, or alkynylene of 2 to 10 carbons;R.sub.3' represents a straight-chain or branched alkyl, alkenyl, or alkynyl radical, or a cycloalkyl, cycloalkenyl, or aryl radical; wherein R and R.sub.3' are unsubstituted or substituted with one or more halogen, hydroxyl, alkoxy, aryloxy, heteroaryloxy, amino, alkylamino, dialkylamino, mercapto, alkylthio, arylthio, heteroarylthio, cyano, carboxyl, alkoxycarbonyl, wherein the alkyl portion contains 1 to 15 carbon atoms, aryloxycarbonyl, wherein the aryl portion contains 6 to 20 carbon atoms, or heteroaryloxycarbonyl radicals, wherein the heteroaryl portion contains 3 to 15 carbon atoms;G.sub.1 represents a hydrogen or a hydroxyl protecting group; andY is oxygen.