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Harnessing Quinone Methides: Total Synthesis of (±)‐Vaticanol A
Authors:Tue H Jepsen  Stephen B Thomas  Yunqing Lin  Dr Christos I Stathakis  Irene de?Miguel  Prof?Dr Scott A Snyder
Institution:1. Dept. of Chemistry, Columbia University, 3000 Broadway, New York, NY 10027 (USA);2. Dept. of Chemistry, The Scripps Research Institute, 130 Scripps Way, Jupiter, FL 33458 (USA) http://www.scripps.edu/snyder/index.htm
Abstract:Although quinone methides are often postulated as intermediates in the biosynthesis of many polyphenolic natural products, deploying their power in a laboratory setting to achieve similar bond constructions has sometimes proven challenging. Herein, a total synthesis of the resveratrol trimer vaticanol A has been achieved through three instances of quinone methide chemistry. These operations, one of which succeeded only under very specific conditions, expediently generated its 7,5]‐carbocyclic core, afforded a unique sequence for dihydrobenzofuran formation, and concurrently generated, in addition to the target molecule, a series of diastereomers reflective of many other isolates.
Keywords:Friedel–  Crafts reaction  natural products  quinone methide  resveratrol  total synthesis
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