SNAr Reaction/Claisen Rearrangement Approach to 2,4-Diisoprenylxanthones: Total Synthesis of Garcinone A
作者:Takashi Matsumoto、Miho Mochizuki、Yuuki Fujimoto、Hikaru Yanai
DOI:10.1055/s-0040-1707819
日期:2020.9
A total synthesis of garcinone A, a natural xanthone possessing a 2,4-diisoprenylated structure, was accomplished by utilizing a readily available 1,3-difluoroxanthone derivative as the key intermediate through the installation of two isoprenyl side chains by an SNAr reaction with the alkoxide of 1,1-dimethylallyl alcohol followed by a Claisen rearrangement. The strategy also permitted the selective
Garcinone A 的全合成是一种具有 2,4-二异戊二烯化结构的天然呫吨酮,它是通过利用容易获得的 1,3-二氟呫吨酮衍生物作为关键中间体,通过 SNAr 反应安装两个异戊二烯基侧链来完成的。 1,1-二甲基烯丙醇的醇盐,然后进行克莱森重排。该策略还允许在 C2 和 C4 位置选择性安装互不相同的烯丙基部分。