DIPRENYLATED XANTHONE FROM THE STEM BARK OF KANDIS GAJAH (Garcinia griffithii)

DIPRENYLATED XANTHONE FROM THE STEM BARK OF KANDIS GAJAH (Garcinia griffithii)

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A diprenylated xanthone, 1,5-dihydroxy-3-methoxy-4,7-diprenylxanthone (1) had been isolated the first time from the dichloromethane extract of the stem bark of Garcinia griffithii, together with Air Spring Kits 1,7-dihydroxyxanthone (2) and polyisoprenylated benzophenone, guttiferone I (3).The structure of these compounds were determined on the basis of spectroscopic data including UV, IR, 1H NMR, 13C Neuro Optimizer NMR, HMQC, HMBC and COSY.Keywords: diprenylated xanthone, 1,5-dihydroxy-3-methoxy-4,7-diprenylxanthone, Garcinia griffithii.