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- ISSN: 1570-1786
- E-ISSN: 1875-6255
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A New Pyranoxanthone from the Stem Bark of Calophyllum inophyllum
- Source: Letters in Organic Chemistry, Volume 8, Issue 6, Jul 2011, p. 447 - 449
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- 01 Jul 2011
Abstract
The stem bark of Calophyllum inophyllum gave one new prenylated dipyranoxanthone inophinone (1), together with two other xanthones, inophyllin A (2) and caloxanthone B (3) and three common triterpenes, friedelin (4), stigmasterol (5) and betulinic acid (6). 1D and 2D NMR spectral data (1H, 13C, DEPT, COSY, HMBC & HMQC) were used to elucidate the structures of these compounds
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