BICYCLIC BETA-LACTAM/PARABEN COMPLEXES THEIR USE AND PROCESSES USING THEM

摘要

The invention provides complexes of the formula: ##STR1## wherein X is chloro, hydrogen, vinyl, or --CH.sub.3,PPZ is O;P Pis 0-5;P PY is phenyl or 1,4- cyclohexadien-1-yl; PPR.sub.1 and R.sub.2 are hydrogen or hydroxy, with the proviso that R.sub.1 and R.sub.2 are not both hydrogen andP PR.sub.3 is --COO.sup.-, --COO(C.sub.1 -C.sub.4 alkyl), --NO.sub.2 or ##STR2## wherein R.sub.4 is C.sub.1 -C.sub.4 alkyl.