Synthesis of the Core Structure of Acutumine
journal contributionposted on 17.03.2005, 00:00 by Matthew D. Reeder, G. S. C. Srikanth, Spencer B. Jones, Steven L. Castle
The tricyclic core of the bioactive natural product acutumine has been synthesized. Key steps include an oxidative phenolic coupling to form a masked o-benzoquinone, an anionic oxy-Cope rearrangement to construct an all-carbon quaternary center, and a Michael-type cyclization to form an amine-bearing quaternary carbon. The target compound exists in solution as an enol, in contrast to related compounds that are ketones. A model explaining these observations is presented.