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 intramolecular glycosylation, anomeric mixture of the corresponding disaccharides. The dependence of the diastereoselectivity on the glycosylation procedure, the solvent, and the blocking groups in comparison
一系列甘露糖基供体通过碳酸盐,草酸盐,丙二酸盐,琥珀酸盐和邻苯二甲酸酯系链分别经由位置6连接至在分子内糖基化过程中提供的相应二糖的异头混合物的葡糖苷和葡糖胺受体的位置3。与分子间甘露糖基化相比,研究了非对映选择性对糖基化程序,溶剂和保护基的依赖性。