摘要:
In an effort to probe the mechanism by which glycosyltransferases recognize glycoproteins and assemble the core structures of O-linked oligosaccharides, two constrained glycopeptides based on the alpha -N-acetylgalactosaminyl serine substructure were chosen for synthesis. These compounds representing one of the two possible gauche conformations of the D-serine and L-serine configurations of the parent substructure were successfully prepared in reasonable overall yield through a convergent strategy. (C) 2001 Elsevier Science Ltd. All rights reserved.