Total Synthesis of (?)-Crinine. Use of Tandem Cationic Aza-Cope Rearrangement/Mannich Cyclizations for the Synthesis of Enantiomerically PureAmaryllidaceae Alkaloids
作者:Larry E. Overman、Soji Sugai
DOI:10.1002/hlca.19850680324
日期:1985.5.15
The totalsynthesis of enantiomerically pure (−)-crinine (1) in 10 steps and 6% overall yield from cyclopentene oxide is reported. The key step was the rearrangement of 7 upon reaction with AgNO3 at 25°C to give cis-perhydroindolone 8 in 81% yield.