Strategic approach to C-nucleosidesvia sugar anomeric radical, cation, and anion with sugar tellurides
摘要:
Direct coupling reactions of the protected D-ribofuranosyl p-anisyl telluride and 2-deoxy-D-ribofuranosyl p-anisyl telluride with electron-poor heteroaromatics and electron-rich aromatics via anomeric radical, cation, and anion were carried out. (C) 1997 Elsevier Science Ltd.
Facile radical decarboxylative alkylation of heteroaromatic bases using carboxylic acids and trivalent iodine compounds
作者:Hideo Togo、Masahiko Aoki、Masataka Yokoyama
DOI:10.1016/0040-4039(91)80221-q
日期:1991.11
easily alkylated by the reaction of carboxylicacids with [bis(trifluoroacetoxy)iodo]benzene or [bis(trifluoroacetoxy)iodo]pentafluorobenzene via radical decarboxylative pathways. This system was further applied to the reaction with tetrahydrofurylcarboxylic acid, 1-(2,3,5-tri-O-benyl)-D-ribofuranosylacetic acid, and 1-(2,3,5-tri-O-benzyl)-D-ribofuranosylcarboxylic acid for the model synthesis of C-nucleosides