Boyce Jonathan H, Porco John A
Department of Chemistry, Center for Chemical Methodology and Library Development (CMLD-BU), Boston University, 590 Commonwealth Avenue, Boston, MA 02215 (USA).
Angew Chem Int Ed Engl. 2014 Jul 21;53(30):7832-7. doi: 10.1002/anie.201404437. Epub 2014 Jun 10.
We report a stereodivergent, asymmetric total synthesis of (-)-clusianone in six steps from commercial materials. We implement a challenging cationic cyclization forging a bond between two sterically encumbered quaternary carbon atoms. Mechanistic studies point to the unique ability of formic acid to mediate the cyclization forming the clusianone framework.
我们报道了以市售原料经六步实现(-)-clusianone的立体发散性不对称全合成。我们实施了一项具有挑战性的阳离子环化反应,在两个空间位阻较大的季碳原子之间形成了一个键。机理研究表明甲酸具有独特的能力来介导环化反应,从而形成clusianone骨架。