作者:Joseph J. Topczewski、Jeffrey D. Neighbors、David F. Wiemer
DOI:10.1021/jo901161m
日期:2009.9.18
The first totalsynthesis of (+)-schweinfurthin B, a potent and differentially active cytotoxic agent, has been accomplished. Completion of the synthesis required just 16 steps in the longest linear sequence from commercially available vanillin. Key synthetic transformations included a Shi epoxidation and an efficient cascade cyclization initiated by treatment of the resulting epoxide with BF3·OEt2