Preparation of 2-C- and 3-C-cyano-2-enopyranoside derivatives and their epoxidation
摘要:
Methyl 4,6-O-benzylidene-2-C- and 3-C-cyano-2,3-dideoxy-D-erythro-hex-2-enopyranosides and -2-enitols were prepared and their epoxidation was performed. (C) 2007 Elsevier Ltd. All rights reserved.
Abstract Axial attack mainly occurred in the reactions of methyl 4,6- O -benzylidene-2,3-dideoxy-2-nitro-α- d - erythro -hex-2-enopyranoside with sodium borodeuteride, hydrogen peroxide, hydrogen cyanide, and methanol, whereas equatorial attack predominated in the reaction with sodium methoxide and tert -butyl peroxide.