Direct glycosylation: synthesis of α-indoline ribonucleosides
摘要:
A selective synthesis of alpha-anomers of indoline nucleosides is described. Ribonucleosides of indoline, dimethylindoline and 5-bromoindoline are readily prepared in good yield by reacting indoline bases directly with the protected sugar, 2,3-O-(1-methylethylidene) 5-O-(triphenylmethyl)-D-ribofuranose in dry ethanol or methylene chloride in presence of molecular sieves at 40-60 degrees C. (C) 2005 Elsevier Ltd. All rights reserved.
Low temperature dehydrogenation of α-indoline nucleosides
作者:Tilak Chandra、Shawn Zou、Kenneth L. Brown
DOI:10.1016/j.tetlet.2004.08.110
日期:2004.10
A variety of α-indole nucleosides are easily prepared from α-indoline nucleosides in excellent yield and at moderate temperature using manganese dioxide and molecular sieves in benzene or methylene chloride.