Indium-Promoted Barbier-Type Allylations in Aqueous Media: New Access to 2-C- and 4-C-Branched Sugars
作者:André Lubineau、Yves Canac、Nicole Le??Goff
DOI:10.1002/1615-4169(200206)344:3/4<319::aid-adsc319>3.0.co;2-s
日期:2002.6
Indium-promoted Barbier-type allylations in aqueous media of 2-bromo-4-enopyranoside (3) and 4-bromo-2-enopyranosides (2β, 6α and 6β) provide a new access to different 2-C-branched sugars (7, 11, 13) and 4-C-branched sugar (18). Moreover, apart from the synthesis and characterization of these C-branched sugars, mechanistic aspects of these reactions are discussed.
在 2-bromo-4-enopyranoside (3) 和 4-bromo-2-enopyranosides(2β、6α 和 6β)的水性介质中,铟促进的 Barbier 型烯丙基化为不同的 2-C-支链糖提供了新途径(7 , 11, 13) 和 4-C-支链糖 (18)。此外,除了这些 C 支糖的合成和表征之外,还讨论了这些反应的机理方面。