C-Glycosides were successfully prepared via dehydrative alkylation under Mitsunobu conditions, using substituted sulfonyl methanes as nucleophiles. The materials prepared were converted to useful C-glycoside intermediates. An application of this approach toward the synthesis of C-glycolipids is presented. (C) 2009 Elsevier Ltd. All rights reserved.
Reactions of glycosyl fluorides. Synthesis of C-glycosides
作者:K. C. Nicolaou、Roland E. Dolle、Alexander Chucholowski、Jared L. Randall
DOI:10.1039/c39840001153
日期:——
Glycosylfluorides were found to react with a number of nucleophilic reagents with or without catalysis leading to a variety of C-glycosides and related compounds.
The α- and β-anomers of ethyl (2,3,4,6-tetra-O-benzyl-D-glucopyranosyl) acetate, useful intermediates for the synthesis of alkyl C-glucosides, can be obtained in good yields by reaction of tetra-O-benzylglucose with triethyl phosphonoacetate according to the Wittig-Horner procedure.