Synthesis of the Pentacyclic Skeleton of the Aspidosperma Alkaloids Using Rhodium Carbenoids as Reactive Intermediates
作者:Albert Padwa、Alan T. Price
DOI:10.1021/jo971424n
日期:1998.2.1
derivatives was treated with rhodium(II) acetate. Attack of the amido carbonyl oxygen at the resultant rhodiumcarbenoid center produced a transient push-pull carbonyl ylide dipole which underwent an intramolecular dipolar cycloaddition reaction. A related annulation sequence was used to prepare the pentacyclic skeleton of the aspidosperma family of alkaloids. Synthesis of the required diazo imide was