Abstract
Three new unusual 23-spirocholestane derivatives, ypsilanogenin (1), ypsilanogenin 3-O-β-D-glucopyranoside (2), and 4'-acetylypsilanogenin 3-O-β-D-glucopyranoside (3), were isolated from the whole plants of Ypsilandra thibetica. The structures of compounds 1-3 were deduced by spectroscopic and chemical methods, and the structure of 1 was further confirmed by a single-crystal diffraction analysis. All isolates were evaluated for their inhibitory activities against HIV-1.
Georg Thieme Verlag KG Stuttgart · New York.
Publication types
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Research Support, Non-U.S. Gov't
MeSH terms
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Anti-HIV Agents / chemistry
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Anti-HIV Agents / isolation & purification
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Anti-HIV Agents / pharmacology*
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Cholestanes / chemistry
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Cholestanes / isolation & purification
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Cholestanes / pharmacology
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Crystallography, X-Ray
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Glycosides / chemistry
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Glycosides / isolation & purification
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Glycosides / pharmacology*
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Liliaceae / chemistry*
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Magnetic Resonance Spectroscopy
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Molecular Structure
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Plants, Medicinal
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Saponins / chemistry
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Saponins / isolation & purification
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Saponins / pharmacology
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Spiro Compounds / chemistry
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Spiro Compounds / isolation & purification
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Spiro Compounds / pharmacology
Substances
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Anti-HIV Agents
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Cholestanes
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Glycosides
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Saponins
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Spiro Compounds
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ypsilanogenin