title: A new semisynthesis of human insulin.
abstract: A new semisynthesis of human insulin starting from porcine insulin is described. NalphaA1, NalphaB1-di-Boc-desoctapeptide-(B23-30)-insulin bearing 6 free carboxyl groups is coupled with the suitably protected human insulin-(B23-30)-octapeptide. The preferred reaction site is the carboxyl group of ArgB22. Side products are eliminated by extensive chromatographic purification.
mesh_terms: D000595:Amino Acid Sequence; D000596:Amino Acids / Q000032:analysis; D000818:Animals; D002850:Chromatography, Gel; D003460:Crystallization; D004588:Electrophoresis, Cellulose Acetate; D004591:Electrophoresis, Polyacrylamide Gel; D006801:Humans; D007328:Insulin / Q000032:analysis / Q000138:chemical synthesis*; D010446:Peptide Fragments / Q000138:chemical synthesis; D013552:Swine
chemical_list: D000596:Amino Acids; D007328:Insulin; D010446:Peptide Fragments