A Versatile Approach to Alcohol, Aldehyde, Ketone and Amine Derivatives Starting from β-Allyl C-Glycosides of d-Ribofuranose and 2-Deoxy-d-ribofuranose
作者:Christian Vogel、Heike Wächtler、Dilver Fuentes、Dirk Michalik、Martin Köckerling、Alexander Villinger、Udo Kragl、Quirino Cedeño
DOI:10.1055/s-0030-1260200
日期:2011.10
An efficient preparative procedure is described, leading from β-allyl C-glycosides of d-ribofuranose to alcohols by a hydroboration-oxidation procedure. The corresponding aldehydes were obtained by Swern or Dess-Martin oxidation. Alternatively, two of the alcohols were mesylated to gain access to azides and amines. Treatment of the aldehydes with ethynylmagnesium bromide or phenylethynyllithium and consecutive oxidation of the diastereomeric alcohols provided the acetylenic ketones in good to excellent yields. The obtained derivatives serve as important intermediates for the synthesis of various heterocyclic systems.
本研究介绍了一种高效的制备方法,通过氢硼氧化法将 d-ribofuranose 的δ-烯丙基 C-糖苷转化为醇。通过 Swern 或 Dess-Martin 氧化反应可得到相应的醛。此外,还可对其中两种醇进行甲磺酰化,以获得叠氮化物和胺。用乙炔溴化镁或苯乙炔锂处理醛类,并连续氧化非对映醇,可得到乙炔酮,收率从良好到极佳。获得的衍生物是合成各种杂环系统的重要中间体。