Sarcanolides A and B: two sesquiterpenoid dimers with a nonacyclic scaffold from Sarcandra hainanensis
2011
He, Xiu-Feng | Zhang, Sheng | Zhu, Rong-Xiu | Yang, Sheng-Ping | Yuan, Tao | Yue, Jian-Min
Two novel lindenane-type sesquiterpenoid dimers, sarcanolides A (1) and B (2), were isolated from the whole plants of Sarcandra hainanensis. These compounds feature a new nonacyclic scaffold in which the bond formation of C-11–C-7′ imposed the five-membered lactone ring in a full β-direction. Their structures, including the absolute configuration, were determined by NMR analysis, CD exciton chirality method, and ECD calculation.
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