TEMPO-Mediated Anodic Oxidation of Methyl Glycosides and 1-Methyl and 1-Azido Disaccharides
作者:Matthias Schämann、Hans J. Schäfer
DOI:10.1002/ejoc.200390041
日期:2003.1
Methyl glycosides of L-sorbopyranoside, D-fructopyranoside, D-glucosaminopyranoside, 2,3-dehydro-2,3-dideoxyglucopyranoside, cellobiose, lactose, and maltose and the 1-azido derivatives of glucose, cellobiose, lactose, and maltose have been converted into the corresponding uronic acids in moderate to excellent yields by TEMPO-mediated anodic oxidation. The anode proves to be an advantageous alternative
L-山梨糖苷、D-吡喃果糖苷、D-吡喃葡萄糖苷、2,3-脱氢-2,3-二脱氧吡喃葡萄糖苷、纤维二糖、乳糖和麦芽糖的甲基糖苷以及葡萄糖、纤维二糖、乳糖和麦芽糖的 1-叠氮衍生物通过 TEMPO 介导的阳极氧化以中等至极好的收率转化为相应的糖醛酸。在碳水化合物的 TEMPO+ 氧化中,阳极被证明是其他助氧化剂的有利替代品,并且与 N-酰基氨基和叠氮基以及双键相容。电解质,一种碳酸盐缓冲液,可以很容易地用阳离子交换树脂去除,通过增加电极面积可以轻松放大。(© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2003)