Synthesis of optically pure threonine-containing dipeptides by regio- and stereo-controlled ring expansion of aziridine-2-imide derivatives
Abstract
The regio- and stereo-selective ring expansion of chiral N-(α-amino acyl)aziridine-2-imides to oxazolines and subsequent ring opening to optically pure threonine-containing dipeptides with the desired stereochemistry is described.