Two new chromones, 8-(3-hydroxypropyl)-2-(3-hydroxy-1-oxopropyl)-6-methoxy-4H-chromen-4-one (1), 2-acetyl-8-(3-hydroxypropyl)-6-methoxy-4H-chromen-4-one (2), along with four known ones (3–6) were isolated from the fermentation products of an endophytic fungus Aspergillus versicolor derived from tobacco. Their structures were elucidated by spectroscopic methods, including extensive 1D and 2D NMR techniques. Compounds 1 and 2 were evaluated for their anti-tobacco mosaic virus (anti-TMV) activities. The results showed that compounds 1 and 2 exhibited potential anti-TMV activities with inhibition rates of 35.3 and 30.6%, respectively, rates that are close to that of positive control.
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Acknowledgment
This project was supported financially by the National Natural Science Foundation of China (Nos. 81860624, 21967021), the Foundation of Yunnan Tobacco Industry Co. Ltd. (No. 2022JY02), and the Yunnan Innovative Research Team (2019HC020).
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Published in Khimiya Prirodnykh Soedinenii, No. 3, May–June, 2023, pp. 392–395.
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Shen, SY., Xiong, W., Li, SS. et al. Chromones from the Tobacco Derived Fungus Aspergillus versicolor and Their Antiviral Activity. Chem Nat Compd 59, 462–466 (2023). https://doi.org/10.1007/s10600-023-04024-5
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DOI: https://doi.org/10.1007/s10600-023-04024-5