Three New Benzophenone-Xanthone Dimers from the Root of Garcinia dulcis
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概要
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Investigation of the chemical constituents of the roots of Garcinia dulcis resulted in the isolation of three new benzophenone-xanthone dimers named garciduols A-C (1-3) in addition to a new xanthone, 1,3,6-trihydroxy-7-methoxyxanthone (4). Five known xanthones [2,5-dihydroxy-1-methoxy- (5), 1,4,5-trihydroxy- (6), 1,3,5-trihydroxy- (7), 1,3,6-trihydroxy-5-methoxy- (8) and 1,3,6-trihydroxy-8-isoprenyl-7-methoxyxanthone (9)] were also isolated from the roots. Their structures were determined by spectroscopic analysis including two dimensional NMR. The behaviors of chemical shifts caused by acetylation and the position of the methoxyl group in the dimers characterized by model synthetic benzophenones are also discussed.
- 公益社団法人日本薬学会の論文
- 1996-09-15
著者
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土佐 秀樹
岐阜薬大
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RISWAN Soedarsono
Herbarium Bogoriense
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TOSA Hideki
Department of Pharmacognosy, Gifu Pharmaceutical University
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土佐 秀樹
Department Of Pharmacognosy Gifu Pharmaceutical University
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Ito Tetsuro
Department Of Bioactive Molecutes Pharmacognosy Gifu Pharmaceutical University
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Iinuma Munekazu
Department Of Bioactive Molecutes Pharmacognosy Gifu Pharmaceutical University
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Tanaka Toshiyuki
Department Of Applied Physics And Physico-informatics Keio University
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Tanaka Toshiyuki
Department Of Applied Chemistry Faculty Of Engineering University Of Toyama
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Tosa Hideaki
Department Of Pharmacognosy Gifu Pharmaceutical University
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IINUMA Munekazu
Department of Bioactive Molecules, Pharmacognosy, Gifu Pharmaceutical University
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