Selective Protection of Hydroxy Group at C6 Position of Glucose Derivatives
摘要:
6-O-Benzyl derivatives and 6-O-toluoyl derivatives, 2a-f and 3a-f, were prepared in high yields from glucose derivatives 1a-f through multi-level anion formation using an excess of sodium hydride (4 eq.).
6-O-Benzyl derivatives and 6-O-toluoyl derivatives, 2a-f and 3a-f, were prepared in high yields from glucose derivatives 1a-f through multi-level anion formation using an excess of sodium hydride (4 eq.).
Qin, Huiping; Grindley, T. Bruce, Journal of Carbohydrate Chemistry, 1994, vol. 13, # 3, p. 475 - 490
作者:Qin, Huiping、Grindley, T. Bruce
DOI:——
日期:——
A Study of the Rapid Anomerization of Poly-<i>O</i>-benzyl-β-D-glucopyranosides with Titanium Tetrachloride
作者:Shinkiti Koto、Naohiko Morishima、Reiko Kawahara、Katsuhiko Ishikawa、Shonosuke Zen
DOI:10.1246/bcsj.55.1092
日期:1982.4
Titanium tetrachloride rapidly anomerizesmethyl 2,3,4,6-tetra-O-benzyl-β-D-glucopyranoside in dichloromethane at 25 °C. Evidence for the proposal that the benzyloxymethyl group on C-5 and the ring oxygen of the glucoside cooperate to prompt the reaction is described. The reagent anomerizes the interglycosidic linkage of several disaccharide derivatives.
四氯化钛在 25 °C 的二氯甲烷中快速异构化甲基 2,3,4,6-四-O-苄基-β-D-吡喃葡萄糖苷。描述了 C-5 上的苄氧基甲基和糖苷的环氧协同促进反应的证据。该试剂将几种二糖衍生物的糖苷间键异构化。
Corrigendum: An Iron(III) Catalyst with Unusually Broad Substrate Scope in Regioselective Alkylation of Diols and Polyols