Three New Resin Glycosides and a New Tetrahydropyran Derivative from the Seeds of Quamoclit pennata
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概要
- 論文の詳細を見る
Three new resin glycosides, quamoclins V (1), VI (2), and VII (3) and a new tetrahydropyran derivative, quamopyran (4), were isolated from the seeds of Quamoclit pennata BOJER (Convolvulaceae). The chemical structures of these compounds were determined primarily on the basis of spectroscopic data. The carboxyl group of the aglycone, 11S-convolvulinolic acid, of 1 and 2 was linked intermoleculary with a hydroxy group of the sugar moiety to form a macrocyclic ester structure, as in already known jalapins, and 3 was an acylated glycosidic acid methyl ester. All of the sugar moieties of 1–3 were acylated by one 2S-methylbutyric acid. Compound 4 was a diketone having a tetrahydropyran ring.
著者
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Miyashita Hiroyuki
Faculty of Pharmaceutical Sciences, Sojo University
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Kinjo Junei
Faculty Of Pharmaceutical Sciences Fukuoka University
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Nohara Toshihiro
Faculty Of Medical And Pharmaceutical Science Kumamoto University
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Ono Masateru
School Of Agriculture Kyushu Tokai University
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Okawa Masafumi
Faculty Of Pharmaceutical Sciences Fukuoka University
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Yoshimitsu Hitoshi
Faculty Of Engineering Kyushu Kyoritsu University
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Takaki Yoshinari
School Of Agriculture Tokai University
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Takatsuji Masamitsu
School of Agriculture, Tokai University
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Akiyama Kousuke
School of Agriculture, Tokai University
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Nohara Toshihiro
Faculty of Medical and Pharmaceutical Scieces, Sojo University
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Miyashita Hiroyuki
Faculty of Medical and Pharmaceutical Sciences, Kumamoto University
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