Reactivity Umpolung in Intramolecular Ring Closure of 3,4-Disubstituted Butenolides: Diastereoselective Total Synthesis of Paeonilide
作者:Prashant S. Deore、Narshinha P. Argade
DOI:10.1021/ol4028804
日期:2013.11.15
multifunctional butenolide followed by an acid-catalyzed chemo- and diastereoselectiveintramolecular ring closure via the reactivity umpolung has been demonstrated to accomplish a concise total synthesis of paeonilide. Overall, the present protocol involves one-pot reduction of an α,β-unsaturated carbon–carbondoublebond and intramolecular nucleophilic insertion of oxygen function at the electron-rich