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Cyathane diterpenoids from fruiting bodies of Phellodon niger |
Sheng-Tao FANGa,b, Tao FENGa, Ling ZHANGa,b, Ze-Jun DONGa, Zheng-Hui LIa, Ji-Kai LIUa |
a State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, Yunnan, China; b Graduate University of the Chinese Academy of Sciences, Beijing 100049, China |
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Abstract Four new cyathane-type diterpenoids, nigernins C-F(1-4), together with four known compounds, were isolated from the fruiting bodies of the basidiomycete Phellodon niger. The structures of these new compounds were established on the basis of spectroscopic analysis, including 1D and 2D NMR experiments. In addition, nigernin F(4) with an unusual 3, 4-seco cyathane diterpenoid skeleton was found to occur in nature for the first time. It was suggested to be as an oxidation product of C-3-C-4 bond cleavage of nigernin E(3).
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Keywords
cyathane
diterpenoid
nigernin
Phellodon niger
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Fund:This project was supported by the National Basic Research Program of China(973 Program, 2009CB522300), the National Natural Sciences Foundation of China(30830113), and MOST(2009ZX09501-029). |
Issue Date: 10 November 2017
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