Total synthesis of lespedezavirgatol  

作　　者：QI JinPing 1,DENG HongZhu 2 & CAO DeRong 1 1 School of Chemistry and Chemical Engineering,South China University of Technology,Guangzhou 510640,China 2 School of Traditional Chinese Medicine,Southern Medical University,Guangzhou 510515,China 

出　　处：《Science China Chemistry》2010年第12期2547-2550,共4页中国科学（化学英文版）

基　　金：supported by the National Natural Science Foundation of China(20872038);Research Fund for the Doctoral Program of Higher Education of China(20060561024)

摘　　要：Lespedezavirgatol,a novel 2-phenylbenzofuran compound which was isolated from Lespedeza virgata,was firstly synthesized from pyrogallic acid and 3,4-dimethoxyphenol as starting materials with 8 steps.The key steps for the total synthesis were the selective iodination at 3-position of 1,2-dimethoxy-4-methoxymethoxybenzene and the Sonogashira cross-coupling reaction between 4-iodo-2-methoxybenzene-1,3-diol and 2-ethynyl-3,4-dimethoxy-1-(methoxy-methoxy)-benzene.Lespedezavirgatol,a novel 2-phenylbenzofuran compound which was isolated from Lespedeza virgata,was firstly synthesized from pyrogallic acid and 3,4-dimethoxyphenol as starting materials with 8 steps.The key steps for the total synthesis were the selective iodination at 3-position of 1,2-dimethoxy-4-methoxymethoxybenzene and the Sonogashira cross-coupling reaction between 4-iodo-2-methoxybenzene-1,3-diol and 2-ethynyl-3,4-dimethoxy-1-(methoxy-methoxy)-benzene.

关 键 词：2-phenylbenzofuran lespedezavirgatol SONOGASHIRA CROSS-COUPLING REACTION 

分 类 号：O621.3[理学—有机化学]