ORIGINAL ARTICLE |
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Irpexoates A-D, Four Triterpenoids with Malonyl Modifications from the Fruiting Bodies of the Medicinal Fungus Irpex lacteus |
Yang Tang1,2,3, Zhen-Zhu Zhao2, Zheng-Hui Li2, Tao Feng2, He-Ping Chen2, Ji-Kai Liu2 |
1 State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, People's Republic of China; 2 School of Pharmaceutical Sciences, South-Central University for Nationalities, Wuhan 430074, People's Republic of China; 3 University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China |
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Abstract Four eburicane-type triterpenoids with malonyl modifications, namely irpexoates A-D (1-4), were isolated from the fruiting bodies of the medicinal fungus Irpex lacteus. The structures of the new compounds were established by extensive spectroscopic methods, including 1D and 2D NMR, HRESIMS spectroscopic analysis. Irpexoate B (2) displayed weak cytotoxicity against four human cancer cell lines (A-549, SMMC-7721, MCF-7, SW480) with IC50 values varying from 22.9 to 34.0 μM, and irpexoate D (4) showed weak cytotoxicity against the human cancer cell line SW480 with an IC50 value of 35.2 μM.
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Keywords
Irpex lacteus
Meruliaceae
Eburicane
Malonyl
Cytotoxicity
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Fund:This work was financially supported by National Natural Science Foundation of China (81561148013), the Key Projects of Technological Innovation of Hubei Province (2016ACA138), and the Fundamental Research Funds for the Central University, South-Central University for Nationalities (CZT18014, CZT18013). |
Corresponding Authors:
He-Ping Chen, Ji-Kai Liu
E-mail: chenhp@mail.scuec.edu.cn;jkliu@mail.kib.ac.cn
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Issue Date: 02 June 2018
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