Asymmetric Synthesis of Rupestonic Acid and Pechueloic Acid
作者:Pan Han、Zhu Zhou、Chang-Mei Si、Xian-Yi Sha、Zheng-Yi Gu、Bang-Guo Wei、Guo-Qiang Lin
DOI:10.1021/acs.orglett.7b03459
日期:2017.12.15
In this report, the originally proposed rupestonic acid (5) and pechueloic acid (3) were efficiently synthesized. The chiral lactone 13, recycled from the degradation of saponin glycosides, was utilized to prepare the key chiral fragment 11. During the exploration of this convergent assembly strategy, the ring-closing metathesis (RCM), SmI2-prompted intermolecular addition, and [2,3]-Wittig rearrangement