Glycoside-Clustering Round Calixarenes toward the Development of Multivalent Carbohydrate Ligands. Synthesis and Conformational Analysis of Calix[4]arene <i>O</i>- and <i>C</i>-Glycoconjugates
作者:Alessandro Dondoni、Martin Kleban、Xubo Hu、Alberto Marra、Harold D. Banks
DOI:10.1021/jo020178z
日期:2002.7.1
and C-glycosyl calixarenes (calixsugars) have been prepared by tethering carbohydrate moieties to a tetrapropoxycalix[4]arene scaffold through alkyl chains. Two methodologies have been employed. One consisted of the stereoselective multiple glycosylation of upper rim calix[4]arene polyols leading to calix-O-glycosides; the other involved a multiple Wittig olefination of upper rim calix[4]arene-derived