Saccharidic monomers and a macromonomer were synthesized and copolymerized in the presence of divinylbenzene (DVB) as crosslinker in conditions of separation of phases to give hydrophilic nanostructured sugar-based vinyl copolymers. Appropriate model molecules such as N-benzyl-D-gluconamide for the saccharidic copolymers and 4-(4-chlorobutoxy) benzaldehyde and (E)-4-(4-chloro-2-butenyloxy) benzaldehyde for electrophilic reagents prefiguring possible copper amine oxidase inhibitors allowed identification of conditions for useful monofunctionalizations mainly at the position 2 of the saccharidic units. The examined samples of the nanostructured copolymers from one of the monomers proved to be stable enough to tolerate the functionalization reactions without loss of morphology. (c) 2007 Elsevier Ltd. All rights reserved.
Synthesis and evaluation of d-gluconamides as green mineral scales
作者:Marcelo I.P. Reis、Aline D. Gonçalves、Fernando de C. da Silva、Alessandro K. Jordão、Ricardo J. Alves、Saulo Fernandes de Andrade、Jackson A.L.C. Resende、Anderson A. Rocha、Vitor F. Ferreira
DOI:10.1016/j.carres.2012.01.027
日期:2012.5
A series of 13 D-gluconamides were synthesized in moderate to good yields and evaluated as green scale inhibitors. The crystal structures of two compounds were determined by X-ray crystallography. The compounds 6c and 6d showed a reasonable inhibition of BaSO4 precipitation from aqueous solution (47% and 51%, respectively) that indicated the potential for these derivatives of delta-gluconolactone. (C) 2012 Elsevier Ltd. All rights reserved.
Direct Amidation of Aldoses and Decarboxylative Amidation of α-Keto Acids: An Efficient Conjugation Method for Unprotected Carbohydrate Molecules
With use of iodine as an appropriate oxidant, unprotected and unmodified aldoses undergo oxidativeamidation with a variety of functionalized amines, α-amino esters, and peptides, whereas KDO, sialic acid, and other α-keto acids proceed with oxidative decarboxylation followed by in situ amidation. Glycoside bond and many other functional groups are inert under such mild reaction conditions. This reaction