作者:Raquel G Soengas、Juan C Estévez、Ramón J Estévez
DOI:10.1016/s0040-4020(03)00988-8
日期:2003.8
Two new examples of a carbon-oxygen ethoxycarbonyl group shift are described. Treatment of 3-ethoxycarbonylnitromethyl-1,2-O-isopropylidene-6-O-p-toluenesulfonyl-alpha-D-allofuranose (4) with Bu4NF leads to a rearrangement to 5-O-ethoxycarbonyl-1,2-O-isopropylidene-3-nitromethyl-6-O-p-toluenesulfonyl-alpha-D-allofuranose (8). Similar treatment of ethyl-3-O-benzyl-6-deoxy-6-nitro-D,L-glycero-D-glucoheptofuronate (12) gives 3-O-benzyl-4-O-ethoxycarbonyl-6-deoxy-6-nitro-D-glucopyranose (16). (C) 2003 Elsevier Ltd. All rights reserved.