IntroductionOrganotin compounds have attracted attention as an optimal model for antitumour agents due to the function of the interesting intramolecular O→Sn c
The production of 7-aminodeacetoxy cephalosporanic acid (7-ADCA),4′-nitrobenzyl-3-bromomethyl-3-cephem-4-carboxylate(GCLE) and their analo-gues from penicillin