An Enantioselective Synthesis of Tarchonanthuslactone
作者:Sarah D. Garaas、Thomas J. Hunter、George A. O'Doherty
DOI:10.1021/jo0163400
日期:2002.4.1
enantioselective synthesis of tarchonanthuslactone has been achieved in eight steps from ethyl sorbate. The asymmetry of the route was introduced via a Sharpless asymmetric dihydroxylation allowing access to either enantiomer. The synthesis utilizes a palladium-catalyzed reduction and a diastereoselective base-catalyzed acetal formation as the key steps. The pyran ring of tarchonanthuslactone was established