Enantioselective Total Synthesis of (−)-Euxanmodin B: An Axially Chiral Natural Product with an Anthraquinone-Xanthone Composite Structure
作者:Nobuyuki Takahashi、Takeshi Kanayama、Kumi Okuyama、Hiroko Kataoka、Haruhiko Fukaya、Keisuke Suzuki、Takashi Matsumoto
DOI:10.1002/asia.201100187
日期:2011.7.4
The first total synthesis of (−)‐euxanmodin B is described. An axially chiral, enantiomerically pure biphenyl, available by enzymatic desymmetrization of σ‐symmetric biaryl diacetate, was used as the key chiral biaryl building block. Two annulation reactions allowed the construction of the xanthone–anthraquinone composite structure with full stereochemical control.
描述了(-)-艾克莫西丁B的第一个全合成。轴向手性,对映体纯的联苯可通过σ-对称联芳基二乙酸酯的酶促脱对称作用获得,用作关键的手性联芳基构件。通过两个环空反应,可以构建具有完全立体化学控制的黄酮-蒽醌复合结构。