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spirostanol glycoside/neoplasms
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Bufadienolide and spirostanol glycosides from the rhizomes of helleborusorientalis.
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The rhizomes of Helleborus orientalis have been analyzed for the bufadienolide glycoside and spirostanol saponin constituents, resulting in the isolation of a new bufadienolide rhamnoside (1), along with two known bufadienolide glycosides (2 and 3) and five new spirostanol saponins (4-8). The
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
Spirostanol and sesquiterpenoid glycosides from the rhizomes of Trillium tschonoskii.
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Three new spirostanol glycosides, trilliumosides K-M (1-3), one new sesquiterpenoid glycoside, tritschsesuquiside A (4), along with three known analogues (5-7) were obtained from the rhizomes of Trillium tschonoskii. The structures of new glycosides were elucidated by spectroscopic analyses (HRMS
Four new steroidal glycosides from Solanum torvum and their cytotoxic activities.
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Two novel C-22 steroidal lactone saponins, namely solanolactosides A, B (1, 2) and two new spirostanol glycosides, namely torvosides M, N (3, 4) were isolated from ethanol extract of aerial parts of Solanum torvum. Their structures were characterized as solanolide
Biologically active steroidal glycosides from Tribulus terrestris.
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The steroidal saponin constituents obtained from Tribulus terrestris were tested for their antimicrobial and cytotoxic effects. The spirostanol-based steroidal saponins 1-3 exhibited remarkable activity against fungal organisms (Candida albicans and Cryptococcus neoformans) and cancer cell lines
Anti-herpes virus activity of Solanum steroidal glycosides.
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Since some Solanum-genus plants have traditionally been used for anti-cancer and anti-herpes agents from olden times, we examined anti-herpes simplex virus type 1 (HSV-1) activity of typical steroidal glycosides with the frameworks of spirostane (including nuatigenin glycoside), furostane,
Cytotoxic activity of steroidal glycosides from solanum plants.
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Since some Solanum-genera plants have traditionally been used as anti-cancer and anti-herpes agents from olden times, we examined the cytotoxic activity of typical steroidal glycosides with the framework of spirostane, furostane, spirosolane, and pregnane obtained from Solanum plants. Among these
Steroidal saponins from the rhizomes of Polygonatum sibiricum.
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Four new steroidal saponins, named neosibiricosides A-D (1-4), were isolated from the rhizomes of Polygonatum sibiricum, along with two known spirostanol glycosides. The structures of the new glycosides were elucidated by spectroscopic methods and acid hydrolysis as
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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