Four new sesquiterpenoids from fruiting bodies of the fungus Inonotus rickii

He-Ping ChenState Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming650201, China;University of Chinese Academy of Sciences, Beijing100049, China

Wen-Bin DongState Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming650201, China;University of Chinese Academy of Sciences, Beijing100049, China

Tao FengState Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming650201, China

Xia YinState Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming650201, China;University of Chinese Academy of Sciences, Beijing100049, China

Zheng-Hui LiState Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming650201, China

Ze-Jun DongState Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming650201, China

Yan LiState Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming650201, China

Ji-Kai LiuState Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming650201, ChinaCorrespondence[email protected]

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Abstract

Three new bisabolane sesquiterpenoids, inonotic acid A (1), 3-O-formyl inonotic acid A (2), inonotic acid B (3), and one new drimane sesquiterpenoid 3α,6β-dihydroxycinnamolide (4), were isolated from the fruiting bodies of mushroom Inonotus rickii. Their structures were elucidated by means of extensive spectroscopic methods. Compound 4 had moderate inhibitory activity on human colon cancer SW480 (IC₅₀ = 20.4 μmol).

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Acknowledgments

This project was financially supported by National Natural Science Foundation of China (U1132607, 81102346) and Yunnan Natural Science Foundation of China (2011FB099).

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Four new sesquiterpenoids from fruiting bodies of the fungus Inonotus rickii

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Four new sesquiterpenoids from fruiting bodies of the fungus Inonotus rickii

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