BICYCLIC BETA-LACTAM/PARAVENN COMPLEX

摘要

The invention provides complexes of the formula: wherein X is chloro, hydrogen, vinyl, or -CH3, Z is CH2, S, or O; n is 0-5; Y is phenyl or 1,4-cyclohexadien-1-yl; R1 and R2 are hydrogen or hydroxy, with the proviso that R1 and R2 are not both hydrogen and R3 is -COO<->, -COO(C1-C4 alkyl),-NO2 or wherein R4 is C1-C4 alkyl.e