Novel steroidal saponins from Dioscorea esculenta (Togedokoro) |
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| Authors: | Hyoung Jae Lee Bunta Watanabe Masaru Nakayasu Michio Onjo Yukihiro Sugimoto |
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| Institution: | 1. Graduate School of Agricultural Science, Kobe University, Kobe, Japan;2. Institute for Chemical Research, Kyoto University, Uji, Japan;3. Faculty of Agriculture, Kagoshima University, Kagoshima, Japan |
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| Abstract: | Fifteen steroidal saponins 1–15, which include 4 furostanol glycosides 1–3 and 15, and 11 spirostanol glycosides 4–14, were isolated from the tubers and leaves of lesser yam (Dioscorea esculenta, Togedokoro). Their structures were identified by nuclear magnetic resonance and liquid chromatography mass spectroscopy. Four steroidal saponins 9, 11, 14, and 15 were found to be novel compounds. |
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| Keywords: | lesser yam Dioscorea esculenta steroidal saponins furostanol glycosides spirostanol glycosides |
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