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Xanthone glucoside from an insect pathogenic fungus Conoideocrella luteorostrata NBRC106950
Tatsuro Yoneyama1, Miki Iguchi1, Kento Yoshii1
1Faculty of Pharmaceutical Science, Tokushima Bunri University, Tokushima, Japan.
Abstract:
A new compound, 3-O-(4-O-methyl-β-D-glucopyranosyl) xanthone (1) was isolated from the culture of Conoideocrella luteorostrata NBRC106950. The structure of 1 was mainly determined by 1H, 13C, 2D-NMR and HREIMS spectral analyses. The absolute configuration of 4-O-methylglucopyranosyl moiety was determined by the optical rotation of aqueous layer of hydrolyzed 1 as D-configuration.
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