A Facile Enantioselective Synthesis of the Dimeric Pyranonaphthoquinone Core of the Cardinalins
作者:Margaret Brimble、Jennifer Gibson、Jimmy Sejberg、Jonathan Sperry
DOI:10.1055/s-2008-1042896
日期:2008.4
The enantioselective synthesis of a dimeric pyranonaphthoquinone closely related to cardinalin 3 is described. Key steps include the Hauser-Kraus annulation between a cyanophthalide and a chiral enone to create the naphthalene skeleton, a Suzuki-Miyaura homocoupling of an aryl triflate to construct the biaryl bond and a double stereoselective lactol reduction to install the 1,3-cis stereochemistry of the pyran rings.
本文介绍了一种与红心苷 3 密切相关的二聚吡喃萘醌的对映选择性合成。关键步骤包括:在氰酞和手性烯酮之间进行豪瑟-克劳斯环化反应以生成萘骨架;在三酸芳酯之间进行铃木-宫浦均相偶联反应以构建双芳基键;以及进行双立体选择性内酯还原反应以安装吡喃环的 1,3-顺式立体化学结构。