Crotalionosides A—C, Three New Megastigmane Glucosides, Two New Pterocarpan Glucosides and a Chalcone C-Glucoside from the Whole Plants of Crotalaria zanzibarica
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概要
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From a 1-BuOH-soluble fraction of the MeOH extract of the leaves of Crotalaria zanzibarica collected in the Okinawa Islands, three new megastigmane glucosides, named crotalionosides A—C, two new pterocarpan glucosides and a chalcone C-glucoside were isolated together with two known flavonoid glycosides and one known megastigmane glucoside. The structures of the new compounds were elucidated by a combination of spectroscopic analyses. The absolute configurations of allenic megastigmane glucosides were determined by application of the modified Moshers method. Those of the allenic moieties were determined by interpretation of the circular dichroism (CD) spectra of the reduction products derived from citrosides A and B. The aglycones of pterocarpan glucosides were found to be melilotocarpan B and the absolute structure of the chalcone C-glucoside was determined by comparison of the CD spectral behavior with the reported values.
- 公益社団法人 日本薬学会の論文
著者
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Matsunaga Keiji
Graduate School Of Pharmaceutical Sciences Kyoto University
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Matsunami Katsuyoshi
Department of Pharmacognosy, Graduate School of Biomedical Sciences, Hiroshima University
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Otsuka Hideaki
Department of Pharmacognosy, Graduate School of Biomedical Sciences, Hiroshima University
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Takeda Yoshio
Faculty of Pharmacy, Yasuda Womens University
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Shinzato Takakazu
Subtropical Field Science Center, Faculty of Agriculture, University of the Ryukyus
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Otsuka Hideaki
Division Of Medicinal Chemistry Graduate School Of Biochemical Sciences Hiroshima University
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Otsuka Hideaki
Department Of Pharmacognosy Graduate School Biomedical Sciences Hiroshima University
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Kawahata Masatoshi
Fac. Of Pharmaceutical Sciences Tokushima Bunri Univ. Kagawa Campus
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Matsunaga Kazuhisa
Faculty Of Pharmaceutical Sciences Fukuoka University
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Takeda Yoshio
Faculty Of General Arts And Sciences The Tokushima University
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Matsunaga K
Faculty Of Pharmaceutical Sciences Fukuoka University
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Otsuka H
Hiroshima Univ. Hiroshima Jpn
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Matsunami Katsuyoshi
Department Of Pharmacognosy Graduate School Biomedical Sciences Hiroshima University
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Matsunami Katsuyoshi
Division Of Organ Transplantation Biomedical Research Center Osaka University Graduate School Of Med
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Shitamoto Junko
Department of Pharmacognosy, Graduate School of Biomedical Sciences, Hiroshima University
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Shinzato Takakazu
Subtropical Field Sci. Center Fac. Of Agriculture Univ. Of The Ryukyus
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