Xanthones

Xanthones and Other Constituents of Trema orientalis

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Chemical investigation of dichloromethane and ethyl acetate extracts from trunk and root barks of Trema orientalis led to the isolation of 16 compounds. Methylswertianin, decussatin, glycosides o...

Secoiridoids and xanthones from Tylophora secamonoides Tsiang

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A new secoiridoid, secamonoide A (1), and a new xanthone glycoside, secamonoide B (2), together with nine known compounds, were isolated from the aerial parts of Tylophora secamonoides Tsiang. Th...

Cytotoxic prenylated xanthones from Calophyllum inophyllum

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A new prenylated xanthone (1), named caloxanthone N, together with two known constituents, gerontoxanthone C (2) and 2-hydroxyxanthone (3), was isolated from the ethanolic extract of the twigs of...

Xanthones from the roots of Cudrania fruticosa Wight

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Chemical investigation on the roots of Cudrania fruticosa resulted in the isolation of two new xanthones, 1,6,7-trihydroxy-2-(1,1-dimethyl-2-propenyl)-3-methoxyxanthone (1) and 3,6,7-trihydroxy-1...

Two new xanthones from the stems of Cratoxylum cochinchinense

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Two new xanthones, 6-hydroxy-3,7-dimethoxy-8-(3-methylbut-2-enyl)-6',6'-dimethyl-5'-hydroxy-4',5'-dihydropyrano(2',3':1,2)xanthone (1) and 6-hydroxy-3,7-dimethoxy-8-(2-oxo-3-methylbut-3-enyl)-6',...

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