Dual-Participation Protecting Group Solves the Anomeric Stereocontrol Problems in Glycosylation Reactions
作者:Hui Liu、Thomas Hansen、Si-Yu Zhou、Guo-En Wen、Xu-Xue Liu、Qing-Ju Zhang、Jeroen D. C. Codée、Richard R. Schmidt、Jian-Song Sun
DOI:10.1021/acs.orglett.9b03321
日期:2019.11.1
The 2,2-dimethyl-2-(ortho-nitrophenyl)acetyl (DMNPA) group permits, via robust neighboringgroupparticipation (NGP) or long distance participation (LDP) effects, the stereocontrolled 1,2-trans, 1,2-cis, as well as β-2,6-dideoxy glycosidic bond generation, while suppressing the undesired orthoester byproduct formation. The robust stereocontrol capability of the DMNPA is due to the dual-participation