Author's Organization：Faculty of Pharmaceutical Sciences, University of Tokyo Faculty of Pharmaceutical Sciences, University of Tokyo Faculty of Pharmaceutical Sciences, University of Tokyo Faculty of Pharmaceutical Sciences, University of Tokyo
Treatment of glycine ester with Cu (II) ion and other metal ions in a non-aqueous solution at room temperature resulted in the simultaneous formation of di-, tri-, and tetraglycine peptide esters. Each peptide ester was separated by column chromatography after carbobenzoxylation. Diketopiperazine was not formed in this reaction. Various reaction conditions were examined in detail.
