Rearrangement of a Tricyclic 2,5-Cyclohexadienone: Towards a General Synthetic Route to the Daphnanes and (+)-Resiniferatoxin We wish to gratefully acknowledge the support of Daiso Ltd., Japan (M.M.), and Meiji Seika Kaisha Ltd., Japan (S.S.). M.J. thanks Pharmacia-UpJohn for a graduate fellowship during his third year at Caltech. Financial support was provided by the Packard Foundation, the National Science Foundation (USA), the National Institutes of Health (USA), and by generous funds from Eli Lilly, Merck, Novartis, Pfizer, Pharmacia-Upjohn, Zeneca, the Eidgenössische Technische Hochschule (ETH), the Kontaktgruppe für Forschungsfragen (KGF), and Hoffmann La Roche.