Triazole-fused sugars from nitroalkene-containing C-glycosides by a tandem 1,3-dipolar cycloaddition and intramolecular Michael addition
作者:Wei Zou、Milan Bhasin、Kannan Vembaiyan、Dean T. Williams
DOI:10.1016/j.carres.2009.03.007
日期:2009.5
A synthetic method to triazole-fused sugars by treatment of nitroalkene-containing C-glycosides with sodium azide is described. Initial experiments conducted at room temperature gave only the 1,3-dipolar cycloaddition products. However, at elevated reaction temperature the tandem beta-elimination/cycloaddition/Michael addition yielded 1,5-disubstituted triazole-fused sugars.
描述了通过用叠氮化钠处理含硝基烯烃的C-糖苷来合成三唑融合糖的方法。在室温下进行的初始实验仅得到1,3-偶极环加成产物。然而,在升高的反应温度下,串联的β-消除/环加成/ Michael加成产生1,5-二取代的三唑稠合的糖。