1,2,4-Triazole-aided native chemical ligation between peptide-N-acyl-N′-methyl-benzimidazolinone and cysteinyl peptide

Abstract

1,2,4-Triazole facilitated native chemical ligation (NCL) between peptide-MeNbz (MeNbz: N-acyl-N′-methyl-benzimidazolinone) and a cysteinyl peptide in the absence of thiol additives. The method enabled one-pot desulfurization and iodine oxidation after NCL. Additionally, the direct isolation of the target peptide from the NCL reaction mixture with an activated thiopropyl–Sepharose resin was achieved.