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.
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