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    Please use this identifier to cite or link to this item: http://ir.cnu.edu.tw/handle/310902800/25053


    標題: Xanthones from Hypericum Sampsonii
    作者: Ming-Tyan Chen
    Chiu-Ming Chen
    貢獻者: 應用化學科
    日期: 1986
    上傳時間: 2012-02-24 16:04:37 (UTC+8)
    摘要: Hypericum sampsonii Hance contains mangiferin, isomangiferin,2-hydroxy-3,4-dimethoxyxanthone, toxyloxanthone B, and a new compound,hyperxanthone, which was identified as 5,9-dihydroxy-3,3-dimethylpyrano- [3,2-a]xanthen-12(3H)-one on the basis of spectroscopic evidences.Characteristic fragment ions in the mass spectrum of pyranoxanthone are discussed.
    關聯: 嘉南學報 12:p.A25-A30 轉載 Heterocycles 23(10)
    Appears in Collections:[嘉南學報] 12期 (1986)
    [醫藥化學系 ] 期刊論文

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