1-(D-Glucopyranosyl)-1,2,3-triazoles were prepared from per-O-acetylated alpha-and beta-D-glucopyranosyl azides as well as per-O-benzoylated (beta-D-gluco-hept-2-ulopyranosylazide)onamide and onic acid methylester by using azide-alkyne cycloaddition catalysed by in situ generated Cu(I) under aqueous conditions. The O-acyl protecting groups were removed by the Zemplen protocol. The test compounds were assayed against rabbit muscle glycogen phosphorylase b to show that the b-D-glucopyranosyl derivatives were superior inhibitors as compared to the two other series of triazoles. (C) 2009 Elsevier Ltd. All rights reserved.
Synthesis of α- and β-d-glucopyranosyl triazoles by CuAAC ‘click chemistry’: reactant tolerance, reaction rate, product structure and glucosidase inhibitory properties
作者:Simone Dedola、David L. Hughes、Sergey A. Nepogodiev、Martin Rejzek、Robert A. Field
DOI:10.1016/j.carres.2010.03.041
日期:2010.6
cycloaddition (CuAAC) 'click chemistry' was used to assemble a library of 21 alpha-D- and beta-D-glucopyranosyl triazoles, which were assessed as potential glycosidase inhibitors. In the course of this work, different reactivities of isomeric alpha- and beta-glucopyranosyl azides under CuAAC conditions were noted. This difference was further investigated using competition reactions and rationalised on the