An improved procedure for nucleoside synthesis using glycosyl trifluoroacetimidates as donors
摘要:
Using glycosyl trifluoroacetimidates as donors and nitromethane (or acetonitrile) as solvent, silylation and subsequent glycosylation were realized in a 'one-pot' procedure to provide the corresponding nucleosides derivatives in high yields.[GRAPHICS](C) 2009 Elsevier Ltd. All rights reserved.
Effective Synthesis of Nucleosides Utilizing O-Acetyl-Glycosyl Chlorides as Glycosyl Donors in the Absence of Catalyst: Mechanism Revision and Application to Silyl-Hilbert-Johnson Reaction
作者:Chengyuan Liang、Weihui Ju、Shunjun Ding、Han Sun、Gennian Mao
DOI:10.3390/molecules22010084
日期:——
An effective synthesis of nucleosides using glycosylchlorides as glycosyldonors in the absence of Lewis acid has been developed. Glycosylchlorides have been shown to be pivotal intermediates in the classical silyl-Hilbert-Johnson reaction. A possible mechanism that differs from the currently accepted mechanism advanced by Vorbrueggen has been proposed and verified by experiments. In practice, this
Effective synthesis of nucleosides with glycosyl trifluoroacetimidates as donors
作者:Jinxi Liao、Jiansong Sun、Biao Yu
DOI:10.1016/j.tetlet.2008.06.042
日期:2008.8
Glycosyl trifluoroacetimidates have been disclosed to be effective glycosyl donors for the synthesis of nucleosides; the present N-glycosylation protocol requires only a catalytic amount of TMSOTf as promoter and proceeds smoothly at room temperature. (c) 2008 Elsevier Ltd. All rights reserved.