作者:Mohammad Samadi、Christian Munoz-Letelier、Stéphane Poigny、Michèle Guyot
DOI:10.1016/s0040-4039(00)00383-x
日期:2000.4
A convergent synthesis of the C29–C44 fragment, the common subunit of the spongipyran macrolides is described. The key step of the synthesis is the C-glycosidation reaction which is based on coupling of the lithiated F-ring sulfone with the E-ring aldehyde, and subsequent reductive desulfonylation to afford the E–F bis (pyran) with high stereoselectivity at the anomeric carbon.
描述了海绵状大环内酯类的常见亚基C29–C44片段的会聚合成。合成的关键步骤是C-糖基化反应,该反应基于锂化的F-环砜与E-环醛的偶联,然后进行还原性脱磺酰化反应,以提供具有高立体选择性的E-F双(吡喃)。异头碳。