Saponins and C-Glycosyl Flavones from the Seeds of Abrus precatorius
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概要
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Two new saponins, 3-O-[β-D-glucuronopyranosyl-(1→2)-β-D-glucopyranosyl]hederagenin (named abrus-saponin I) and 3-O-[β-D-glucuronopyranosyl-(1→2)-β-D-glucopyranosyl]oleanolic acid 28-β-D-glucopyranosyl ester (abrus-saponin II), and three new flavones, 6-C-β-D-glucopyranosyl-4', 5-dihydroxy-7,8-dimethoxyflavone (precatorin I), 6-C-[β-D-apiofuranosyl-(1→2)-β-D-glucopyranosyl]-4', 5-dihydroxy-7,8-dimethoxyflavone (precatorin II), 6-C-[β-D-apiofuranosyl-(1→2)-β-D-glucopyranosyl]-4', 5-dihydroxy-7-methoxyflavone (precatorin III), were isolated from the seeds of Abrus precatorius L. together with twelve known compounds including a naturally new saponin, 3-O-[β-D-glucuronopyranosyl-(1→2)-β-D-glucopyranosyl]oleanolic acid. Their structures were determined on the basis of chemical and spectroscopic methods. In addition, the unusual NMR spectral behavior of the flavone C-glycosides is also discussed.
- 公益社団法人日本薬学会の論文
- 1998-06-15
著者
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MA Chao-Mei
Institute of Natural Medicine, University of Toyama
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Ma Chao-mei
富山大学和漢医薬学総合研究所
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Hattori Masao
Research Institute For Wakan-yaku (traditional Sino-japanese Medicines) Toyama Medical And Pharmaceu
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NAKAMURA Norio
Research Institute for Wakan-Yaku, Toyama Medical and Pharmaceutical University
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Nakamura N
Institute Of Natural Medicine Toyama Medical And Pharmaceutical University
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MA Chao-mei
Research Institute for Wakan-Yaku (Traditional Sino-Japanese Medicines) Toyama Medical and Pharmaceu
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Nakamura Norio
Research Institute For Wakan-yaku (oriental Medicines) Toyama Medical And Pharmaceutical University
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HATTORI MASAO
Research Institute for Wakan-Yaku (Oriental Medicines)
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