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A new p-hydroxybenzoylated xanthone, [2-(2 -O-p-hydroxybenzoyl)-C-β-d-glucopyranosyl-1,3,6,7-tetrahydroxyxantho ne], muraxanthone, and four known xanthones have been isolated from the leaves of Senecio mikanioides. The structure of the new compound has been defined by means of FAB-mass spectrometry and a combination of homo- and hetero-nuclear one- and two-dimensional NMR techniques.
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