Synthesis of (+)-Schisanwilsonene A by Tandem Gold-Catalyzed Cyclization/1,5-Migration/Cyclopropanation
作者:Morgane Gaydou、Ricarda E. Miller、Nicolas Delpont、Julien Ceccon、Antonio M. Echavarren
DOI:10.1002/anie.201302411
日期:2013.6.17
Going (anti)viral: The first total synthesis of the antiviral (+)‐schisanwilsonene A has been completed using a fully stereoselective tandem cyclization/1,5‐migration/intermolecular cyclopropanation. The key reaction sequence is catalyzed by gold.
Stereoselective syntheses of terpenoids in a more efficient manner have been a long-term pursuit for synthetic chemists. Herein we describe the two-step, enantiospecific and protecting-group-free synthesis of (+)-schisanwilsonene A from a carotane compound, which was produced in E. coli. We also completed the first enantiomeric synthesis of (+)-tormesol in five steps. The two-stage strategy offers