Journal of the American Chemical Society, Vol.135, No.2, 644-647, 2013
Enantioselective Total Synthesis of Hyperforin
A modular, 18-step total synthesis of hyperforin is described. The natural product was quickly accessed using latent symmetry elements, whereby a group-selective, Lewis acid-catalyzed epoxide-opening cascade cyclization was used to furnish the bicyclo[3.3.1]-nonane core and set two key quaternary stereocenters.