期刊
CANADIAN JOURNAL OF CHEMISTRY
卷 91, 期 1, 页码 51-65出版社
CANADIAN SCIENCE PUBLISHING
DOI: 10.1139/cjc-2012-0285
关键词
pentenyl glycosides; glycosyl fluorides; pentenyl orthoesters; glycosylation; orthogonal
资金
- National Science Foundation [CHE 0717702]
- Ministerio de Ciencia e Innovacion and Comunidad de Madrid [CTQ2009-10343, S2009/PPQ-1752]
n-Pentenyl glycosides (NPGs) and n-pentenyl orthoesters (NPOEs) have been transformed into glycosyl fluorides by a variety of methods. In the case of NPGs, Barluenga's reagent, bis(pyridinium) iodonium(I) tetrafluoroborate (IPy2BF4), gives good yields of glycosyl fluorides when HF-pyridine complex is used as an additional fluoride source. NPOEs can be activated either by a combination of electrophilic iodonium (Barluenga's reagent) and HBF4 or by the action of HF-pyridine complex. The ensuing glycosyl fluorides form a semiorthogonal pair of glycosyl donors when confronted with NPGs.
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