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spirostanol glycoside/jams
Länken sparas på Urklipp
8 resultat
Antineoplastic agents; I. Three spirostanol glycosides from rhizomes of Dioscorea collettii var. hypoglauca.
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By activity-guided fractionation, three known steroidal saponins, prosapogenin A of dioscin, dioscin and gracillin, were isolated from the total saponin fraction of Dioscorea coiletti var. hypoglauca as active compounds causing morphological abnormality of Pyricularia oryzae mycelia. The compounds
Determination of steroidal saponins in different organs of yam (Dioscorea pseudojaponica Yamamoto).
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Yams (Dioscorea spp.) are perennial trailing rhizome plants. Steroidal saponins, furostanol and spirostanol glycosides are the marked functional compounds in yams. In this investigation, a C18 solid phase extraction method was developed for yam saponins purification. The contents of saponins in
Effects of domestic processing on steroidal saponins in Taiwanese yam cultivar (Dioscorea pseudojaponica Yamamoto).
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The effects of domestic processing on steroidal saponins and furostanol and spirostanol glycosides in Taiwanese yam cultivar (Dioscorea pseudojaponica Yamamoto) were studied. The baking or frying of yam slices was conducted at 150, 180, and 200 degrees C for 3, 5, and 10 min. Yam slices were steamed
Isolation and identification of steroidal saponins in Taiwanese yam cultivar (Dioscorea pseudojaponica Yamamoto).
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A new furostanol pentaoligoside and spirostanol tetraoligoside were isolated for the first time from yam tubers (Dioscorea pseudojaponica Yamamoto) from Taiwan, together with four known yam saponins, methyl protodioscin, methyl protogracillin, dioscin, and gracillin. Their structures were
Lipidated steroid saponins from Dioscorea villosa (wild yam).
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Two groups of lipidated steroid saponins including seven new compounds (2, 3, 5, and 7-10) were isolated from the widely used botanical, wild yam (Dioscorea villosa), employing a fractionation protocol of metabolomic mining. This methodology recently led to the isolation of 14 diarylheptanoids from
[Composition and biological activity of steroid glycosides from a suspended culture of Dioscorea deltoidea Wall cells].
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Two major steroid spirostanol glycosides (oligospirostanosides): deltoside (melting point, 296 degrees C, [alpha]D10:-90.8 degrees C (c 5.0,Py) and dioscine (melting point, 285-285 degrees C, [alpha]D10:-106.5 degrees C (c 5.0, Py) and a minor glycoside
Novel steroidal saponins from Dioscorea esculenta (Togedokoro).
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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
Determination of deltonin in rat plasma by using HPLC-MS/MS and the application of this method in pharmacokinetic studies.
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Deltonin is a naturally occurring spirostanol glycoside from Dioscorea zingiberensis C.H. Wright, which is used in traditional Chinese medicine. It exerts strong cytotoxic effect on C26 cells, inhibits C26 derived-tumor growth, and prolongs the survival of tumor-bearing mice after its oral
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