Horner-Wadsworth-Emmons Reaction of Unprotected Sugars in Water or in the Absence of Any Solvent: One-Step Access to<i>C</i>-Glycoside Amphiphiles
作者:Adeline Ranoux、Loïc Lemiègre、Maud Benoit、Jean-Paul Guégan、Thierry Benvegnu
DOI:10.1002/ejoc.200901286
日期:2010.3
The synthesis of C-glycosides in water or in the absence of any solvent from free sugars and β-keto phosphonates is reported. The methodology permits a one-step access to C-glycoside amphiphiles in moderate-to-good yields. The selectivity (α/β and furanoside/pyranoside) is discussed and a process that leads to pure β-C-pyranosides is also described.
报道了在水中或在没有任何溶剂的情况下从游离糖和 β-酮膦酸酯合成 C-糖苷。该方法允许一步获得中等至良好产率的 C-糖苷两亲物。讨论了选择性(α/β 和呋喃糖苷/吡喃糖苷),并描述了产生纯 β-C-吡喃糖苷的过程。