Synthesis of the Tetracyclic Core of Berkelic Acid Using Gold(I)-Catalyzed Hydroarylation and Oxidative Radical Cyclizations
作者:Margaret A. Brimble、Isabell Haym、Jonathan Sperry、Daniel P. Furkert
DOI:10.1021/ol302536j
日期:2012.12.7
A synthetic approach to the tetracyclic core of berkelic acid is reported using gold(I)-catalyzed intramolecular hydroarylation and oxidative radical cyclizations to effect the key ring-forming steps. The carboxylic acid was introduced via a late-stage palladium-catalyzed carbonylation to afford the core tetracycle with the correct relative stereochemistry for the natural product.
据报道,使用金(I)催化的分子内氢芳基化和氧化自由基环化来实现关键的成环步骤,可以合成伯来酸四环核的合成方法。通过后期钯催化的羰基化引入羧酸,以提供具有天然产物正确的相对立体化学的核心四环。