A series of cyclic compounds with dimethyl-substituted 3-(aminoethoxy) propionic acid linkers have been prepared as potential β-turn mimics. The desired linkers were prepared from disubstituted pyrones, which were coupled with dipeptides and then subjected to macrocyclization using diethylcyanophosphonate to furnish cyclic compounds 1-5. Conformational analysis was carried out using NMR and X-ray crystallography. All of the ...
