Non-natural Amino Acids as Modulating Agents of the Conformational Space of Model Glycopeptides
作者:Alberto Fernández-Tejada、Francisco Corzana、Jesús H. Busto、Gonzalo Jiménez-Osés、Jesús M. Peregrina、Alberto Avenoza
DOI:10.1002/chem.200800460
日期:2008.8.8
Therefore, when a methyl group was located at the Cbeta atom with an R configuration, the glycosidic linkage was rather rigid. Nevertheless, when the S configuration was displayed, a significant degree of flexibility was observed for the glycosidic linkage, thus showing both alternate and eclipsed conformations of the psi(s) dihedral angle. In addition, somederivatives exhibited an unusual value