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Intramolecular Diels-Alder/Tsuji allylation assembly of the functionalized trans-decalin of salvinorin A.

Aaron C Burns, Craig J Forsyth

Organic Letters December 7, 2007 DOI: 10.1021/ol7024058 (opens in new tab)

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AI-extracted from the abstract
Characteristics Theoretical or philosophical paper Peer reviewed
Topics Salvia divinorum
Keywords Diterpenes, clerodane Naphthalenes Molecular structure Stereoisomerism
Key points Reports an enantioselective synthesis of the highly functionalized trans-decalin core of salvinorin A, in which a tetraene intermediate made in six steps from an L-(+)-tartaric acid derivative undergoes an intramolecular Diels-Alder/Tsuji allylation sequence to set three contiguous stereocenters, two of them quaternary.

Abstract

An enantioselective synthesis of the highly functionalized trans-decalin core (2) of salvinorin A is described. The tetraene 4 was synthesized in six steps from a known L-(+)-tartaric acid derivative. Three contiguous stereocenters, two of them quaternary, on the trans-decalin were established asymmetrically by an intramolecular Diels-Alder/Tsuji allylation sequence.

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