Catalytic Asymmetric Total Synthesis of (+)- and (−)-Paeoveitol via a Hetero-Diels–Alder Reaction
作者:Tian-Ze Li、Chang-An Geng、Xiu-Juan Yin、Tong-Hua Yang、Xing-Long Chen、Xiao-Yan Huang、Yun-Bao Ma、Xue-Mei Zhang、Ji-Jun Chen
DOI:10.1021/acs.orglett.6b03801
日期:2017.2.3
catalytic asymmetric total synthesis of (+)- and (−)-paeoveitol has been accomplished in 42% overall yield via a biomimetic hetero-Diels–Alder reaction. The chiral phosphoric acid catalyzed hetero-Diels–Alder reaction showed excellent diastereo- and enantioselectivity (>99:1 dr and 90% ee); two rings and three stereocenters were constructed in a single step to produce (−)-paeoveitol on a scale of 452
通过仿生异Diels-Alder反应,以42%的总收率完成了(+)-和(-)-棕榈糖醇的第一个催化不对称全合成。手性磷酸催化的杂Diels-Alder反应表现出优异的非对映选择性和对映选择性(> 99:1 dr和90%ee);一个步骤即可构建两个环和三个立体中心,以产生452 mg的(-)-paeveveitol。该策略使我们能够通过简单地改变催化剂的对映异构体,从相同的底物选择性地合成两种paeoveitol对映异构体。