Penicillin biosynthesis: a model for the oxidative cyclisation of a peptide to a β-lactam
Abstract
An in vitro model for the biosynthetic formation of the β-lactam ring system of penicillin is described in which reaction of N-t-butylhydrocinnamamide with di-t-butyl peroxide and Cu(o-phenanthroline)2Cl2 at 140 °C gave a small yield of the corresponding β-lactam; control experiments established that this did not derive from the corresponding β-chloroamide.