A new sapogenin in the saponins of Zizyphus jujuba,Hovenia dulcis and Bacopa monniera |
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| Authors: | Ken-Ichi Kawai Toshiyuki Akiyama Yukio Ogihara Shoji Shibata |
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| Institution: | Faculty of Pharmaceutical Sciences, University of Tokyo, Bunkyo-ku, Tokyo, Japan |
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| Abstract: | Acid hydrolysis of the saponin of the seeds of Zizyphus jujuba afforded ebelin lactone, which yielded the sapogenin, jujubogenin, on Smith-de Mayo degradation. The mechanism of conversion of jujubogenin into ebelin lactone has been elucidated. Hovenoside G of Hovenia dulcis and bacoside A of Bacopa monniera which produce ebelin lactone on acid hydrolysis have also been found to yield jujubogenin on Smith-de Mayo degradation. |
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| Keywords: | Rhamnaceae Scrophulariaceae jujuboside A jujuboside B hovenoside G bacoside A ebelin lactone |
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