From the n-butanol soluble fraction of the methanol extract of the rhizomes of Smilax excelsa, three new furostanol saponins 3-O-[4-O-acetyl-alpha-L-rhamnopyranosyl-(1 --> 2)-{alpha-L-rhamnopyranosyl-(1 --> 4)}-beta-D-glucopyranosyl]-26-O-[beta-D-glucopyranosyl]-22alpha-hydroxy-(25R)-furost-5-ene-3beta,26-diol (1), 3-O-[2-O-acetyl-alpha-L-rhamnopyranosyl-(1 --> 2)-{alpha-L-rhamnopyranosyl-(1 --> 4)}-beta-D-glucopyranosyl]-26-O-[beta-D-glucopyranosyl]-22alpha-hydroxy-(25R)-furost-5-ene-3beta,26-diol (2), 3-O-[3-O-acetyl-alpha-L-rhamnopyranosyl-(1 --> 2)-{alpha-L-rhamnopyranosyl-(1 --> 4)}-beta-D-glucopyranosyl]-26-O-[beta-D-glucopyranosyl]-22alpha-hydroxy-(25R)-furost-5-ene-3beta,26-diol (3), and three known saponins: protodioscin (4), pseudoprotodioscin (5) and dioscin (6) were isolated.
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| http://dx.doi.org/10.1080/14786410802624827 | DOI Listing |
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