King size: Utilization of large‐size supramolecular rings in the pre‐transition state (pre‐TS) of enamine‐based Michael reactions for high asymmetric induction is described. Enantiomerically pure, druglike hexahydroxanthenes with three contiguous stereocenters were synthesized through supramolecular catalysis by D‐proline and quinine‐NH‐thiourea followed by reductive etherification from simple precursors
特大号:描述了利用基于烯胺的迈克尔反应的过渡前状态(pre-
TS)的大型超分子环用于高不对称诱导。通过
D-脯氨酸和
奎宁-N H-
硫脲的超分子催化,然后在温和条件下从简单的前体进行还原醚化,合成了具有三个连续立体中心的对映体纯的,药物状的六氢
黄酮。