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Xanthones from a microfungus of the genus Xylaria

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Healy, P. C., Hocking, A., Tran-Dinh, N., Pitt, J. I., Shivas, R. G., Mitchell, J. K., Kotiw, M. and Davis, R. A. (2004) Xanthones from a microfungus of the genus Xylaria. Phytochemistry\, 65 (16). pp. 2373-2378. ISSN 0031-9422

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Article Link: https://doi.org/10.1016/j.phytochem.2004.07.019


Chemical investigations of a microfungus Xylaria sp. isolated from the Australian rainforest tree Glochidion ferdinandi have afforded two new natural products, 2-hydroxy-6-methyl-8-methoxy-9-oxo-9H-xanthene-1-carboxylic acid (1) and 2-hydroxy-6-hydroxymethyl-8-methoxy-9-oxo-9H-xanthene-1-carboxylic acid (2). Compound 1 has previously been synthesised but only partially characterised. Methylation of 1 using diazomethane afforded the crystalline compound 2,8-dimethoxy-6-methyl-9-oxo-9H-xanthene-1-carboxylic acid methyl ester (3), whose structure was determined by single crystal X-ray analysis. This paper reports the full spectroscopic characterisation of compounds 1–3 by NMR, UV, IR and MS data. All compounds were inactive in a brine shrimp lethality assay and several antimicrobial screens.

Item Type:Article
Subjects:Science > Biology > Biochemistry
Live Archive:01 Feb 2024 02:08
Last Modified:01 Feb 2024 02:08

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