Regiospecific, Enantiospecific Total Synthesis of the 12-Alkoxy-Substituted Indole Alkaloids, (+)-12-Methoxy-<i>N</i><sub>a</sub>-methylvellosimine, (+)-12-Methoxyaffinisine, and (−)-Fuchsiaefoline
作者:Hao Zhou、Xuebin Liao、James M. Cook
DOI:10.1021/ol0362212
日期:2004.1.1
of the Larock heteroannulation process with a Schollkopf-based chiralauxiliary in good yield. This ester was then employed in the first total synthesis of (+)-12-methoxy-Na-methylvellosimine, (+)-12-methoxyaffinisine, and (-)-fuchsiaefoline in regiospecific, stereospecific fashion in excellent overall yield. The asymmetric Pictet-Spengler reaction and enolate-driven palladium-catalyzed cross coupling