Synthesis of 4- O - d -Mannopyranosyl-α- d -glucopyranosides by Intramolecular Glycosylation of 6- O -Tethered Mannosyl Donors
作者:Gregor Lemanski、Thomas Ziegler
DOI:10.1016/s0040-4020(99)01053-4
日期:2000.1
A series of mannosyl donors linked via position 6 by a carbonate, oxalate, malonate, succinate, and phthalate tether, respectively, to position 3 of a glucoside and glucosamine acceptor afforded during intramolecularglycosylation, anomeric mixture of the corresponding disaccharides. The dependence of the diastereoselectivity on the glycosylation procedure, the solvent, and the blocking groups in comparison