Abstract:A concise total synthesis of (+)‐propindilactone G, a nortriterpenoid isolated from the stems of Schisandra propinqua var. propinqua, has been achieved for the first time. The key steps include an asymmetric Diels–Alder reaction, a Pauson–Khand reaction, a Pd‐catalyzed reductive hydrogenolysis reaction, and an oxidative heterocoupling reaction. These reactions enabled the synthesis in only 20 steps. As a consequence of our synthetic studies, the structure of propindilactone G has been revised. More information… Show more
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