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Two new anthraquinones from Hedyotis diffusa

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Two new anthraquinones have been isolated from the 95% EtOH extract of Hedyotis diffusa and characterized as 2-hydroxy-3-methoxy-6-methyl-9,10-anthraquinone (1) and 2-hydroxy-3-methoxy-7-hydroxymethyl-9,10-anthraquinone (2) by extensive spectral analysis. The known compounds isolated for the first time from this plant have been identified to be 2-hydroxy-3-methoxy-7-methyl-9,10-anthraquinone (3), 2-hydroxy-6-methylanthraquinone (4) and 1,3-dimethoxy-2-hydroxy-9,10-anthraquinone (5).
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Keywords: 9,10-anthraquinone; Hedyotis diffusa; Rubiaceae; anthraquinones

Document Type: Research Article

Affiliations: 1: Department of Phytochemistry, Jiangsu Provincial Institute of Traditional Chinese Medicine, Nanjing, China 2: Department of Biology, Chongqing Three Gorges University, Chongqing, China 3: Department of Phytochemistry, China Pharmaceutical University, Nanjing, China

Publication date: May 1, 2008

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