Two new indole alkaloids, 1-(5-prenyl-1H-indol-3-yl)propan-2-one (1) and 1-(6-methoxy-5-prenyl-1H-indol-3-yl)propan-2-one (2), along with five known ones (3–7) were isolated from the fermentation products of a cigar tobacco-derived endophytic fungus Aspergillus fumigatus. 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). The results showed that compounds 1 and 2 exhibited potential anti-TMV activities with inhibition rates of 26.5 and 28.8%, respectively.
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Acknowledgment
This project was supported financially by the National Natural Science Foundation of China (Nos. 81860624 and 21967021), the Foundation of chemical and Biological Innovation Studio of Yunnan Industrial Co., Ltd., the Foundation of Yunnan Applied Basic Research for Excellent Young Scholars (No. 202001AW079992), and the Foundation of Yunnan Innovative Research Team (No. 2019HC020).
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Published in Khimiya Prirodnykh Soedinenii, No. 3, May–June, 2023, pp. 444–447.
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Ma, YY., Xiong, W., Shen, SY. et al. Bioactive Indole Alkaloids from the Tobacco-Derived Endophytic Fungus Aspergillus fumigatus. Chem Nat Compd 59, 524–528 (2023). https://doi.org/10.1007/s10600-023-04041-4
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DOI: https://doi.org/10.1007/s10600-023-04041-4