Synthesis of galactosides locked in a 1,4B boat conformation and functionalized at the anomeric position
作者:Audrey Caravano、Diane Baillieul、Christophe Ansiaux、Weidong Pan、José Kovensky、Pierre Sinaÿ、Stéphane P. Vincent
DOI:10.1016/j.tet.2006.12.028
日期:2007.2
A new methodology for the preparation of carbohydrates locked in a B-1,B-4 boat conformation is presented. The constrained molecules thus obtained are functionalized at the anomeric position by iodo-, fluoro-, hydroxyl- or/and phosphono-methylene moieties. A remarkable diastereoselective opening of these quaternary acetals was also observed under non-acidic conditions. (c) 2007 Elsevier Ltd. All rights reserved.