Total Synthesis of Pancratistatin Relying on the [3,3]-Sigmatropic Rearrangement
作者:Hyojin Ko、Eunkyung Kim、Jae Eun Park、Deukjoon Kim、Sanghee Kim
DOI:10.1021/jo035371n
日期:2004.1.1
A new totalsynthesis of the antitumor alkaloid, pancratistatin (1), has been accomplished from readily available starting materials. Claisen rearrangement of the racemic dihydropyranethylene 17 was employed to construct the A and C rings with the appropriate stereochemistry. In addition, the Ireland−Claisen rearrangement of the enantiomerically pure 9 followed by ring-closing metathesis provided the