Thermal Synthesis of Polypeptides from N-Butyloxycarbonyl Oligopeptides Containing Aspartyl Residue at C-Terminus

Figure 2

Preparation of N-t-butyloxycarbonyl peptides containing aspartyl residue at C-terminus. TsOH: p-toluenesulfonic acid; TsO-: p-toluenesulfonate; Boc₂: di-t-butyl dicarbonate.