Asymmetric Total Synthesis of Dibenzocyclooctadiene Lignan Natural Products
作者:Robert S. Coleman、Srinivas Reddy Gurrala、Soumya Mitra、Amresh Raao
DOI:10.1021/jo051525i
日期:2005.10.1
Full details of the asymmetric total syntheses of the dibenzocyclooctadienelignans interiotherin A, angeloylgomisin R, gomisin O, and gomisin E (epigomisin O) are presented. The syntheses were based on a unified synthetic strategy involving a novel crotylation using the Leighton auxiliary that occurred with excellent asymmetric induction (>98:2 enantiomeric ratio), a diastereoselective hydroboration/Suzuki−Miyaura