Efficient Synthesis of Natural Polyphenolic Stilbenes: Resveratrol, Piceatannol and Oxyresveratrol
作者:Hong-Yi Sun、Chun-Fen Xiao、Yu-Chen Cai、Yu Chen、Wen Wei、Xian-Ke Liu、Ze-Liang Lv、Yong Zou
DOI:10.1248/cpb.58.1492
日期:——
The practical synthesis of important natural polyphenolic stilbenes, including resveratrol, piceatannol and oxyresveratrol, through Perkin methodology is described. Starting from 3,5-dihydoxyacetophenone (1), the common intermediate 3,5-dimethoxyphenylacetic acid (3) can be obtained via methylation and Willgerodt-Kindler reaction. Perkin condensations between (3) and substituted phenylaldehydes 4 furnished
描述了通过Perkin方法实际合成重要的天然多酚类对苯二酚,包括白藜芦醇,苦菜子酚和氧白藜芦醇。从3,5-二羟基乙酰苯(1)开始,可以通过甲基化和Willgerodt-Kindler反应获得常见的中间体3,5-二甲氧基苯基乙酸(3)。(3)与取代的苯甲醛4之间的珀金缩合提供了E-2,3-二芳基丙烯酸5,随后在Cu /喹啉中脱羧,得到具有Z构型的中间体6。最后,通过在AlI 3 / CH 3 CN系统中同时进行脱甲基/异构化过程,可以分别以良好或高的总收率获得目标化合物7a-c。证明该合成方法更简洁,反式特异性,温和,经济且普遍适用。