Highly selective lipophilic diboronic acid that transports fructose as the trisdentate 2,3,6-β-d-fructofuranose ester
作者:Scott P. Draffin、Peter J. Duggan、Sandhya A.M. Duggan、Jens Chr. Norrild
DOI:10.1016/j.tet.2003.09.068
日期:2003.11
The transport of fructose and glucose through supported liquid membranes promoted by a tetrahedral shaped lipophilic monoboronic acid and diboronic acid, both based on a pentaerythritol core, has been studied. The diboronic acid gave a high fructose/glucose selectivity (7.7: 1.0). The results of molecular modelling studies and C-13 NMR experiments with uniformly labelled C-13-D-fructose suggest that the enhanced selectivity results from the formation of a trisdentate 2,3,6-beta-D-fructofuranose diester within the membrane. Experimental evidence for a previously proposed macrocyclic D-fructopyranose diester formed with an o-phenylene linked diboronic acid has also been found. (C) 2003 Elsevier Ltd. All rights reserved.