A convenient method for replacement of the anomeric hydroxy group in carbohydrates by difluoromethyl functionality
作者:William B. Motherwell、Matthew J. Tozer、Barry C. Ross
DOI:10.1039/c39890001437
日期:——
Difluoromethylenation of carbohydrate lactones followed by catalytic hydrogenation provides a concise sequence for the title transformation.
碳水化合物内酯的二氟亚甲基化,然后催化氢化,为标题转化提供了简洁的序列。
The synthesis of difluoromethylene-linked C-glycosides and C-disaccharides
作者:Timothée F. Herpin、William B. Motherwell、Matthew J. Tozer
DOI:10.1016/s0957-4166(00)86305-3
日期:1994.11
Novel difluoromethylene linked C-glycosides and C-disaccharides were prepared by intermolecular addition of nucleophilic and electrophilic radicals to carbohydrate gem-difluoroenol ethers.
A convenient strategy for replacement of the anomeric hydroxyl group by difluoromethyl functionality in carbohydrate derivatives
作者:J.Sarah Houlton、William B. Motherwell、Barry C. Ross、Matthew J. Tozer、David J. Williams、Alexandra M.Z. Slawin
DOI:10.1016/s0040-4020(01)88029-7
日期:1993.9
A series of carbohydrate gem-difluoroenol ethers are readily prepared by the reaction of the corresponding lactones with dibromodifluoromethane, tris(dimethylamino)phosphine and zinc. Subsequent catalytic hydrogenation provides difluoromethyl C-glycoside analogues in which the exocyclic oxygen atom has been replaced by a difluoromethylene unit.