1,2:5,6-di-O-isopropylidene-α-D-glucofuranose potassium salt
英文别名
diacetone-D-glucose potassium salt;Kalium-Verbindung der O1,O2;O5,O6-Diisopropyliden-α-D-glucofuranose;potassium;(3aR,5S,6S,6aR)-5-[(4R)-2,2-dimethyl-1,3-dioxolan-4-yl]-2,2-dimethyl-3a,5,6,6a-tetrahydrofuro[2,3-d][1,3]dioxol-6-olate
Reactions of Carbohydrates in Liquid Ammonia. II. Apparatus and Methods. Alkyl, Acyl and Certain Metallic and Non-metallic Derivatives of Diacetoneglucose
A Reagent-Controlled S<sub>N</sub>2-Glycosylation for the Direct Synthesis of β-Linked 2-Deoxy-Sugars
作者:John Paul Issa、Clay S. Bennett
DOI:10.1021/ja500410c
日期:2014.4.16
of the reaction cannot be controlled using the stereochemical information intrinsic to the glycosyl donor. Here we show that p-toluenesulfonic anhydride activates 2-deoxy-sugar hemiacetals in situ as electrophilic species, which react stereoselectively with nucleophilic acceptors to produce β-anomers exclusively. NMR studies confirm that, under these conditions, the hemiacetal is quantitatively converted