作者:Qi Liu、Guozong Yue、Na Wu、Guang Lin、Yuanzhen Li、Junmin Quan、Chuang-chuang Li、Guoxin Wang、Zhen Yang
DOI:10.1002/anie.201206705
日期:2012.11.26
pentalenolactone A has been obtained through the stereoselective synthesis of a cyclopentenone by a combination of the Co‐mediated Pauson–Khand reaction (PKR) of enyne 1, and the construction of a quaternary‐carbon‐based strained α‐methylidene‐δ‐pentyrolactone core through a trimethylsilyl (TMS) mediated, telescoped intramolecular Michael olefination (TIMO) reaction of keto‐phosphonate 2.
总结:戊烯戊内酯A的甲酯是通过烯键1的Co-介导的Pauson-Khand反应(PKR)的立体选择性合成,以及季碳基应变的构建而通过环戊烯酮的立体选择合成而获得的。α-亚甲基-δ-戊内酯核心是通过三甲基甲硅烷基(TMS)介导的酮膦酸酯2的伸缩式分子内迈克尔烯化反应(TIMO)反应而形成的。