An expedient route to acylated glucosyl halides with a free 2-OH group
作者:Frieder W. Lichtenthaler、Bernd Köhler
DOI:10.1016/0008-6215(94)84076-8
日期:1994.5
carbonyl group of 3,4,6-tri-O-benzoyl-α- d -arabino-hexosyl-2-ulose bromide (8), readily accessible from the hydroxyglycal ester, can be reduced by cyanoborohydride without affecting the anomeric bromine; exclusive axial attack of the hydride affords the benzoylated glucosyl bromide 6 with a free 2-OH group (72%). This amounts to a five-step synthesis from d-glucose, free from chromatography, in 55% overall