Two stereospecific total syntheses of -widdrol () are reported. The first synthesis features the cyclization of dienone to construct bicyclic adduct which is converted to -widdrol using conventional procedures. A second synthesis exploits the cyclization of dienone 17 to prepare functionalized bicyclo[5.4.0]undecene , which is converted to a known -widdrol precursor.
报告了-widdrol()的两种立体有择的合成方法。第一次合成的特征是将二烯酮环化以构建双环加合物,然后使用常规方法将其转化为-widdrol。第二种合成方法是利用二烯酮17的环化反应制备官能化的双环[5.4.0]
十一碳烯,然后将其转化为已知的-widdrol前体。