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  • Title: [Studies on flavonoids from stems and leaves of Calophyllum inophyllum].
    Author: Li YZ, Li ZL, Hua HM, Li ZG, Liu MS.
    Journal: Zhongguo Zhong Yao Za Zhi; 2007 Apr; 32(8):692-4. PubMed ID: 17608221.
    Abstract:
    OBJECTIVE: To study the chemical constituents from the stems and leaves of Calophyllum inophyllum. METHOD: The compounds were isolated by column chromatography on silica gel, Sephadex LH-20 and preparative TLC. Their structures were elucidated by chemical methods and NMR, MS spectroscopic data. RESULT: Nine compounds were identified as 2-hydroxyxanthone (1), 4-hydroxyxanthone (2), 1, 5-dihydroxyxanthone (3), 1, 7-dihydroxyxanthone (4), 1, 3, 5-trihydroxy-2-methoxyxanthone (5), 6-deoxyjacareubin (6), amentoflavone (7), kaempferol-3-O-alpha-L-rhamnoside (8) and quercetin-3-O-alpha-L-rhamnoside (9). CONCLUSION: Compounds 8 and 9 were isolated from the genus Calophyllum and compounds 1, 2, 4-6 were isolated from this plant for the first time.
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