作者:George Majetich、Yong Zhang、Xinrong Tian、Jonathan E. Britton、Yang Li、Ryan Phillips
DOI:10.1016/j.tet.2011.09.072
日期:2011.12
A biomimetic synthesis of the triterpene (±)-perovskone was achieved featuring a remarkable polycyclization process in which three rings, four bonds, and five stereocenters were created in a single operation in 82% yield. This convergent synthesis required 16 steps, starting from vanillin, and proceeded in 9% overall yield. A second route to prepare optically active quinone 2 took 15 steps in 36% overall