Table 3: Preparation of dipeptides from propargyl esters of Aib, Val and Ile.

EntryN-Boc amino propargyl ester usedDipeptideYielda (%)

12g854952.table.003-167
22c854952.table.003-282
32d854952.table.003-388

aThe yields reported are of pure compounds isolated through column chromatography.