Versatile and Expeditious Synthesis of Aurones via Au<sup>I</sup>-Catalyzed Cyclization
作者:Hassina Harkat、Aurélien Blanc、Jean-Marc Weibel、Patrick Pale
DOI:10.1021/jo702197b
日期:2008.2.1
Aurones are conveniently formed in a three-step procedure including a goldI-catalyzed cyclization of 2-(1-hydroxyprop-2-ynyl)phenols as a highly regio- and stereoselective key step. A wide diversity of derivatives can be obtained starting from substituted salicylaldehydes. Synthesis of natural 4,6,3‘,4‘-tetramethoxyaurone and structure revision of two natural products (dalmaisione D and 4‘-chloroaurone)
可以以三步程序方便地形成Aurones,包括金I催化的2-(1-羟基丙-2-炔基)苯酚的环化反应,这是高度区域选择性和立体选择性的关键步骤。从取代的水杨醛开始可以得到各种各样的衍生物。实现了天然4,6,3',4'-四甲氧基金龙的合成和两种天然产物(dalmaisione D和4'-氯金龙)的结构修饰。