作者:JinPing Qi、HongZhu Deng、DeRong Cao
DOI:10.1007/s11426-010-4153-2
日期:2010.12
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 是一种从鱼腥草中分离出来的新型 2-苯基苯并呋喃化合物,首先以焦谷氨酸和 3,4-二甲氧基苯酚为起始原料,通过 8 个步骤合成。总合成的关键步骤是 1,2-二甲氧基-4-甲氧基甲氧基苯的 3 位选择性碘化反应和 4-碘-2-甲氧基苯-1,3-二醇与 2-乙炔基-3,4-二甲氧基-1-(甲氧基-甲氧基)苯的 Sonogashira 交叉偶联反应。