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A cascade cyclization approach to schweinfurthin B
Edward M Treadwell1, Jeffrey D Neighbors, David F Wiemer
1Department of Chemistry, University of Iowa, Iowa City, Iowa 52242, USA.
Organic Letters
|October 12, 2002
Abstract:
[reaction: see text] A strategy for synthesis of the hexahydroxanthene moiety of the natural products schweinfurthin A, B, and D is described. The relative stereochemistry in the key cationic cyclization step is established through the preference of the phenylselenide substituent for an equatorial orientation.