Journal of Natural Medicines 2010-Oct
Furostanol glycosides from the rhizomes of Helleborus orientalis.
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Abstract
Eight new furostanol glycosides (1-8), together with two known ones (9 and 10), have been isolated from a glycoside-enriched fraction prepared from the rhizomes of Helleborus orientalis (Ranunculaceae). The structures of 1-8 were determined on the basis of extensive spectroscopic analysis, including 2D NMR, and the results of hydrolytic cleavage. The isolated compounds were evaluated for their cytotoxic activity against HSC-2 cells.
