Abstract
Two pairs of new salicylaldehyde derivative enantiomers, salicylaldehydiums A and B (1 and 2), along with five known analogues were isolated and identified from a marine-derived fungus Eurotium sp. SCSIO F452. Their structures and absolute configuration were determined by extensive spectroscopic analysis and electronic circular dichroism (ECD) calculations. All the new optical pure enantiomers [(+)-1, (-)-1, (+)-2, (-)-2] were evaluated for their cytotoxic and antioxidative activities. Compound (-)-1 exhibited weak cytotoxic activity.
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Acknowledgements
This work was financially supported by the National Key Research and Development Program of China (2019YFC0312503, 2017YFC0506300), National Natural Science Foundation of China (41476136, 41890853, 41776169), Guangdong Provincial Special Fund for Marine Economic Development Project (Yue Natural Resources Contract No. [2020]042), and the Pearl River S&T Nova Program of Guangzhou (201710010136). We gratefully acknowledge help from the equipment public service center (Dr Xiao, Ms Sun, Ms Zhang, and Dr Zheng) in SCSIO for measuring spectroscopic data and support from the Guangzhou Branch of the Supercomputing Center of Chinese Academy of Sciences.
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Zhong, W., Chen, Y., Wei, X. et al. Salicylaldehyde derivatives from a marine-derived fungus Eurotium sp. SCSIO F452. J Antibiot 74, 273–279 (2021). https://doi.org/10.1038/s41429-020-00395-x
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DOI: https://doi.org/10.1038/s41429-020-00395-x