Studies on Peptides. CXXVII. Synthesis of a Tripentacontapeptide with Epidermal Growth Factor Activity

Abstract

The tripentacontapeptide corresponding to the entire linear sequence of epidermal growth factor was synthesized by assembling 15 peptide fragments and one His residue (position 22), followed by deprotection with trifluoromethanesulfonic acid-thioanisole in trifluoroacetic acid. The deprotected peptide was subjected to air-oxidation. After purification by ion-exchange chromatography on diethyl aminoethyl cellulose followed by high performance liquid chromatography, a peptide with powerful anti-gastric activity was obtained.