Three New Xanthones from the Bark of Garcinia dioica
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概要
- 論文の詳細を見る
Three new xanthones were isolated from the bark of Garcinia dioica (Guttiferae) in addition to a known xanthone, 1,3,6-trihydroxy-8-geranyl-7-methoxyxanthone (rubraxanthone). The structures of the three xanthones were elucidated to be 1,3,6-trihydroxy-8-(7-hydroxy-3,7-dimethyl-2,5-octadieyl)-7-methoxyxanthone, 1,3,6-trihydroxy-8-(6,7-epoxy-3,7-dimethyl-2-octenyl)-7-methoxyxanthone and 1,3,7-trihydroxy-2,4-diisoprenylxanthone by the aid of spectroscopic analysis including the two dimensional NMR technique. The occurrence of xanthone with such a C_<10> alkyl chain is rare in naturally occurring compounds.
- 公益社団法人日本薬学会の論文
- 1996-01-15
著者
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Tanaka Toshiyuki
Gifu Pharmaceutical Univ.
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土佐 秀樹
岐阜薬大
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RISWAN Soedarsono
Herbarium Bogoriense
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Iinuma Munekazu
Gifu Pharmaceutical Univ.gifu Jpn
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TOSA Hideki
Gifu Pharmaceutical University
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Tosa Hideaki
Department Of Pharmacognosy Gifu Pharmaceutical University
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