One new natural ester derivative, biscophilippin (1), as well as 5 known compounds, 5-formyl mellein (2), mellein-5-carboxylic acid (3), 5-hydroxymethylmellein (4), 3β-hydroxystigmast-5-en-7-one (5), and N-trans-feruloyltyramine (6), were isolated from the n-BuOH-soluble fraction of the EtOH extract of rice fermented with the endophytic fungus Biscogniauxia philippinensis var. microspora. Their structures were elucidated by 1D and 2D NMR spectroscopy together with HR-ESI-MS analysis, and comparison of the spectroscopic data with those reported for structurally related compounds.
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Acknowledgment
This work was kindly supported by the Ministry of Science and Technology, R.O.C. (MOST-108-2320-B-080-002-, MOST-109-2622-E-080-001-, and MOST-110-2320-B-080-001-). The authors thank Senior Technician Mrs. Chyi Jia Wang of the Center for Resources, Research, and Development (CRRD) of Kaohsiung Medical University for measuring the 2D NMR data.
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Published in Khimiya Prirodnykh Soedinenii, No. 6, November–December, 2023, pp. 886–888.
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Chen, KJ., Wu, MD., Chen, YZ. et al. Phytochemical Constituents from Biscogniauxia philippinensis var. microspora. Chem Nat Compd 59, 1047–1050 (2023). https://doi.org/10.1007/s10600-023-04193-3
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DOI: https://doi.org/10.1007/s10600-023-04193-3