Synthesis of 2-Acetamido-2-deoxy-β-<scp>d</scp>-glucopyranose <i>O</i>-Glycopeptides from <i>N</i>-Dithiasuccinoyl-Protected Derivatives<sup>1</sup><sup>-</sup><sup>3</sup>
作者:Knud J. Jensen、Paul R. Hansen、D. Venugopal、George Barany
DOI:10.1021/ja953529i
日期:1996.1.1
proteins. The “active ester” approach for solid phase glycopeptide synthesis calls for the direct glycosylation of Nα-(9-fluorenylmethyloxycarbonyl)amino acid pentafluorophenyl esters (Nα-Fmoc-AA-OPfp's). The synthesis of the required Ser(β-d-GlcpNAc) and Thr(β-d-GlcpNAc) building blocks poses special problems arising from the 2-amino substituent in the corresponding glycosyl donors. Activation of donors