ORIGINAL ARTICLES |
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Two New Quinazoline Derivatives from the Moss Endophytic Fungus Aspergillus sp. and Their Anti-inflammatory Activity |
Ning-Ning Wang, Chun-Yu Liu, Tian Wang, Yue-Lan Li, Ke Xu, Hong-Xiang Lou |
Department of Natural Product Chemistry, Key Lab of Chemical Biology of Ministry of Education, School of Pharmaceutical Sciences, Shandong University, Jinan 250012, China |
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Abstract Two new quinazoline derivatives versicomides E (1) and F (2), and 10 known compounds (3-12) were isolated from the moss endophytic fungus Aspergillus sp. Their structures were determined on the basis of extensive spectroscopic data analysis and ECD calculations. Among them, the compound 7 (6-hydroxy-3-methoxyviridicatin) was first reported as a natural product. Inhibition on LPS-induced NO production in RAW 264.7 murine macrophages found that compounds 5, 7 and 8 showed significant inhibitory effects on NO production, with IC50 values of 49.85, 22.14 and 46.02 μM respectively.
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Keywords
Endophytic fungus
Quinazoline
Anti-inflammatory activity
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Fund:The authors gratefully acknowledge the National Natural Science Foundation of China (Nos. 81874293 and 81630093) for financial support and Major Basic Research Program of Shandong Province (ZR2019ZD26). |
Corresponding Authors:
Hong-Xiang Lou
E-mail: louhongxiang@sdu.edu.cn
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Issue Date: 11 March 2021
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