Abstract

Preparation of fully protected peptide C-terminal esters in high yield and purity by making use of gel-phase synthesis on chloromethyl butanediol dimethacrylate (BDODMA) crosslinked polystyrene is described. The C-terminal amino acid of the peptide was incorporated by cesium salt method and the step-wise synthesis was carried out using HOBt active ester coupling procedure. The protected peptides were cleaved from the support by trans-esterification. The crude peptides were purified by HPLC and characterized by amino acid analysis, tic and MALDI TOF MS.