Solid Phase Peptide Synthesis by Oxidation-Reduction Condensation. Synthesis of Adrenocorticotropin(1–24) by Chain Elongation at the Carboxyl End on Solid Support

Abstract
Solid phase peptide synthesis by oxidation-reduction condensation via fragment condensation at the carboxyl end was established by a new monitoring method based on high pressure liquid chromatography. The merit of the method was demonstrated through the synthesis of ACTH (1–24). A resin–tetracosapeptide with quantitative amino acid ratios was easily prepared by coupling 6 fragments of 1–2, 3–7, 8–10, 11–14, 15–19, and 20–24 sequences. ACTH (1–24) with a full activity was obtained in 25% yield from the initial resin-dipeptide by hydrogen fluoride treatment and purification with carboxymethyl-cellulose chromatography.

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