Saponins Esculeosides B-1 and B-2 in Italian Canned Tomatoes
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概要
- 論文の詳細を見る
Italian canned tomatoes contain the tomato glycosides esculeosides B-1 (1, 0.0052%) and B-2 (2, 0.0068%) without esculeoside A. Herein, the structure of esculeoside B-1 (1) is characterized to be 3-O-β-lycotetraosyl (5S,22R,23S,25S)-22,26-epimino-16β,23-epoxy-3β,23,27-trihydroxycholestane 27-O-β-<span style="font-variant: small-caps;">D</span>-glucopyranoside. We hypothesized that these substances might be derived from esculeoside A when the cans are prepared with treatment in boiling water. To confirm that hypothesis, we refluxed esculeoside A with water for 6.5 h, providing esculeosides B-1 (1) and B-2 (2) in yields of 25.8% and 31.0%, respectively.
著者
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YOKOMIZO Kazumi
Faculty of Medical and Pharmaceutical Sciences, Kumamoto University
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Ono Masateru
School Of Agriculture Kyushu Tokai University
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Murakami Kotaro
Faculty Of Pharmaceutical Sciences Sojo University
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Fujiwara Yukio
Graduate School of Medical Sciences, Faculty of Life Sciences, Kumamoto University
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Manabe Hideyuki
Faculty of Pharmaceutical Sciences, Sojo University
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Fujiwara Yukio
Graduate School Of Medical Sciences Faculty Of Life Sciences Kumamoto University
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YOKOMIZO Kazumi
Faculty of Pharmaceutical Sciences, Sojo University
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ZHOU Jian-Rong
Faculty of Pharmaceutical Sciences, Sojo University
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Ikeda Tsuyoshi
Faculty of Medical and Pharmaceutical Sciences, Kumamoto University
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Nohara Toshihiro
Faculty of Medical and Pharmaceutical Scieces, Sojo University
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