Facile Preparation of Dehydrodigallic Acid and Its Derivative for the Synthesis of Ellagitannins
作者:Kazuma Shioe、Shingo Ishikura、Yoshikazu Horino、Hitoshi Abe
DOI:10.1248/cpb.c13-00458
日期:——
A facile method for the synthesis of dehydrodigallic acid, which is a fundamental structure of ellagitannins, was developed. A classical Ullmann condition was effective for the formation of the highly hindered biaryl ether structure, and we clarified that the suitable protection of the phenolic hydroxy groups was crucial in this reaction. In this way, the synthesis of dehydrodigallic acid and its derivative
开发了一种简便的合成去氢二氢戊二酸的方法,这是一种鞣花单宁的基本结构。经典的乌尔曼条件对于形成高度受阻的联芳醚结构是有效的,并且我们阐明了酚羟基的适当保护在该反应中至关重要。以这种方式,成功地进行了脱氢二没食子酸及其衍生物的合成。所描述的方法将提供针对鞣花单宁的合成用途。