Gold(I)-Catalyzed Cyclization for the Synthesis of 8-Hydroxy-3- substituted Isocoumarins: Total Synthesis of Exserolide F
作者:N. Arjunreddy Mallampudi、G. Sudhakar Reddy、Saurabh Maity、Debendra K. Mohapatra
DOI:10.1021/acs.orglett.7b00673
日期:2017.4.21
regioselective gold(I)-catalyzed 6-endo-dig cyclization of 2,2-dimethyl-5-(alkynyl)-4H-benzo[d][1,3]dioxin-4-ones for the synthesis of 8-hydroxy-3-substituted isocoumarins is described. Key features of the reaction include the broad substrate scope, scalability, and tolerance for protecting groups. The synthetic utility of this novel method is demonstrated by the first total synthesis of exserolide
高度区域选择性的金(I)催化2,2-二甲基-5-(炔基)-4 H-苯并[ d ] [1,3]二恶英-4-酮的6-内挖环化反应合成8描述了-羟基-3-取代的异香豆素。该反应的关键特征包括广泛的底物范围,可扩展性和对保护基的耐受性。这种新方法的合成实用性是由Exserolide F(一种含异香豆素的多元醇天然产物)的第一次全合成证明的。