Six xanthones from Calophyllum austroindicum
1996; Elsevier BV; Volume: 43; Issue: 3 Linguagem: Inglês
10.1016/0031-9422(96)00323-8
ISSN1873-3700
AutoresMunekazu Iinuma, Hideki Tosa, Naeko Toriyama, Toŝhiyuki Tanaka, Tetsuro Ito, Veliah Chelladurai,
Tópico(s)Polysaccharides and Plant Cell Walls
ResumoSix new xanthones, caloxanthone F, G, H, 6-hydroxy-1,3,5-trimethoxy-, 3,6-dihydroxy-1,5-dimethoxy- and 1,3,6-trihydroxy-5,7-dimethoxyxanthone, were isolated from the stem wood of Calophyllum austroindicum, in addition to eight known xanthones. From the bark, four known xanthones, a coumarin, apetallic acid, and (−)-epicatechin were isolated. These structures were determined by analysis of NMR spectral data including 2D techniques.
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