Glucofuranosylation with penta-O-propanoyl-β-d-glucofuranose
作者:Richard H. Furneaux、Bénédicte Martin、Phillip M. Rendle、Carol M. Taylor
DOI:10.1016/s0008-6215(02)00300-2
日期:2002.11
be a suitable glycosylating agent for the acid-catalysed, directsynthesis of O-, S- and N-glucofuranosyl compounds. Beta-linked products are formed with good selectivity. Reaction with cyanotrimethylsilane gave the 1,2-O-(1-cyanopropylidene)acetal rather than the C-glycosyl cyanide. By selective acid-catalysed hydrolysis, the title compound was converted to the 1-hydroxy analogue from which the trichloroacetimidates
A β-D-glucofuranose compound which is 1,2,3,5,6-penta-O-propanoyl-β-D-glucofuranose, preferably in crystalline form, is prepared from D-glucose. The compound is prepared by reacting D-glucose with boric acid, or an equivalent thereof, followed by treatment with a propanoylating reagent, preferably propanoic anhydride. The compound is useful for the preparation of other compounds, such as glucofuranosides.