甲基 2,3,5-三-O-苄基-D-呋喃核糖苷 、 对甲苯磺酰胺 在
HClO4 on silica gel 作用下,
以
二氯甲烷 为溶剂,
反应 0.08h,
以92%的产率得到N-(p-toluenesulfonyl) 2,3,5-tri-O-benzyl-α,β-D-ribofuranosylamine
参考文献:
名称:
Sulfonamidoglycosylation of Methyl Glycosides Employing Perchloric Acid Supported on Silica Gel
摘要:
The sulfonamidoglycosylation of methyl glycosides in the presence of perchloric acid immobilized on silica gel proceeded effectively to afford the corresponding sulfonamido glycosides with good to high yields with minimal workup and short reaction times. This methodology was applied to the synthesis of some N-glycosyl sulfamides, which showed low nanomolar activity against human carbonic anhydrase.
One-step synthesis of N-protected glycosylamines from sugar hemiacetals
作者:Virginie Liautard、Christelle Pillard、Valérie Desvergnes、Olivier R. Martin
DOI:10.1016/j.carres.2007.11.022
日期:2008.8
Protected pentofuranose, hexofuranose and hexopyranose hemiacetals were found to react efficiently with amines carrying a deactivating group (alkoxycarbonyl, tosyl or phosphoryl group) in the presence of a Lewis acid to give the corresponding, stable glycosylamines. Such glycosylamine derivatives are useful substrates for further elaboration into nitrogen-containing natural products and carbohydrate mimetics. (C) 2007 Elsevier Ltd. All rights reserved.