Chemical and Pharmaceutical Bulletin
Online ISSN : 1347-5223
Print ISSN : 0009-2363
ISSN-L : 0009-2363
Studies on the Constituents of Anaxagorea Iuzonensis A. GRAY
Ryoko GONDATadahiro TAKEDAToshiyuki AKIYAMA
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2000 年 48 巻 8 号 p. 1219-1222

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抄録
Five new xanthones, 1, 3, 6-trihydroxy-5-methoxy-4-prenylxanthone (1), 1, 3, 5-trihydroxy-6-methoxy-2-prenylxanthone (2), 1, 3, 5-trihydroxy-4-(3-hydroxy-3-methylbutyl) xanthone (3), 1, 3, 6-trihydroxy-4-prenylxanthone (4), 3, 6-dihydroxy-1, 5-dimethoxyxanthone (5) and one new flavonoid, 3, 5, 7, 4'-tetrahydroxy-2'-methoxyflavone (6) along with seven known xanthones and seven known flavonoids were isolated from the bark of Anaxagorea luzonensis A. GRAY and their chemical structures were determined by means of chemical and spectral studies. Almost all flavonoids and one xanthone (13) showed antioxidant activity.
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© The Pharmaceutical Society of Japan
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