Total Synthesis of Tetrahydrolipstatin and Stereoisomers via a Highly Regio- and Diastereoselective Carbonylation of Epoxyhomoallylic Alcohols
作者:Michael Mulzer、Brandon J. Tiegs、Yanping Wang、Geoffrey W. Coates、George A. O’Doherty
DOI:10.1021/ja505639u
日期:2014.7.30
A concise enantioselective synthesis of tetrahydrolipstatin (THL) and seven stereoisomers has been achieved. The synthesis of THL was accomplished in 10 steps and 31% overall yield from an achiral ynone. Key to the success of the approach is the use of a bimetallic [Lewis acid]+[Co(CO)4]− catalyst for a late-stage regioselective carbonylation of an enantiomericallypure cis-epoxide to a trans-β-lactone