Triterpene Glycosides from the Cultures of Phytolacca americana.
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چکیده
منابع مشابه
Isolation and Structure Elucidation of Two Triterpene Saponins from the Roots of Phytolacca Americana
Purification of the n-BuOH fraction of the aqueous alcoholic extract from the roots of Phytolacca americana resulted in the isolation of two triterpene saponins named esculentoside B (1), and esculentoside A (2). The structures of isolated compounds were characterized on the basis of extensive spectral data (1D and 2D NMR; and MS) and in comparison with their Nuclear Magnetic Resonance (NMR) an...
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The accumulation o f betacyanin was reduced by the addition o f various cytokinins to sus pension cultures o f Phytolacca americana. The decrease in the accumulation o f betacyanin was overcome by exogenously supplied tyrosine which is a precursor o f betacyanin. Benzylaminopurine (BAP) decreased the level o f free tyrosine in the cells. Feeding experiments using labeled tyrosine revealed that...
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Four new triterpene glycosides were isolated from the dried aerial parts of Thalictrum squarrosum (Ranunculaceae). They were designated as squarroside I, being a cycloartane-type glycoside, and squarrosides II, III and IV, being oleanene-type glycosides. Their structures were established by using two dimensional (2D) NMR techniques.
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A novel lupane-triterpene glycoside, called wujiapioside B (1), was isolated from the leaves of Acanthopanax gracilistylus (Araliaceae) together with three known lupane-triterpene glycosides, acankoreoside C (2), acantrifoside A (3) and 3-epibetulinic acid 28-O-alpha-L-rhamnopyranosyl-(1-->4)-beta-D-glucopyranosyl-(1-->6)-beta-D-glucopyranosyl ester (4). Based on spectroscopic data, the chemica...
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ژورنال
عنوان ژورنال: Chemical and Pharmaceutical Bulletin
سال: 2001
ISSN: 0009-2363,1347-5223
DOI: 10.1248/cpb.49.246