Au(I)-Catalyzed Annulation of Enantioenriched Allenes in the Enantioselective Total Synthesis of (−)-Rhazinilam
作者:Zuosheng Liu、Andrew S. Wasmuth、Scott G. Nelson
DOI:10.1021/ja0629110
日期:2006.8.1
a unique entry to optically active heterocycles. Asymmetric quaternary carbons can be installed with concurrent heterocycle annulation utilizing this methodology. The enantioenriched allenes are conveniently obtained by catalytic asymmetric acyl halide-aldehyde cyclocondensations and SN2' ring opening of the resulting enantioenriched beta-lactones. An enantioselective total synthesis of (-)-rhazinilam
高度立体选择性的 Au(I) 催化吡咯加成到富含对映体的丙二烯提供了独特的光学活性杂环入口。不对称季碳可以使用这种方法与并发杂环环化一起安装。富含对映体的丙二烯可以通过催化不对称酰卤-醛环缩合反应和所得的富含对映体的β-内酯的SN2'开环方便地获得。(-)-rhazinilam 的对映选择性全合成突出了该反应技术在靶向合成中的潜在效用。