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  • Title: Four new triterpenoid glycosides from the seed residue of Hippophae rhamnoides subsp. sinensis.
    Author: Chen C, Gao W, Cheng L, Shao Y, Kong DY.
    Journal: J Asian Nat Prod Res; 2014; 16(3):231-9. PubMed ID: 24456246.
    Abstract:
    Four new triterpenoid saponins (1-4) were isolated from the seed residue of Hippophae rhamnoides subsp. sinensis, named 3-O-[β-D-glucopyranosyl(1 → 2)-β-D-glucopyranosyl-(1 → 3)]-[α-L-rhamnopyranosyl-(1 → 2)]-α-L-arabinopyranosyl-13-ene-19-one-28-oic acid 28-O-β-D-glucopyranosyl ester (1), 3-O-[β-D-glucopyranosyl(1 → 2)-β-D-glucopyranosyl-(1 → 3)]-[α-L-rhamnopyranosyl-(1 → 2)]-α-L-arabinopyranosyl-13-ene-19-one-30-hydroxyolean-28-oic acid 28-O-β-D-glucopyranosyl ester (2), 3-O-[β-D-glucopyranosyl(1 → 2)-β-D-glucopyranosyl-(1 → 3)]-[α-L-rhamnopyranosyl-(1 → 2)]-β-D-glucopyranosyl-13-ene-19-one-28-oic acid 28-O-β-D-glucopyranosyl ester (3), and 3-O-[β-D-glucopyranosyl(1 → 2)-β-D-glucopyranosyl-(1 → 3)]-[α-L-rhamnopyranosyl-(1 → 2)]-β-D-glucopyranosyl-13-ene-19-one-30-hydroxyolean-28-oic acid 28-O-β-D-glucopyranosyl ester (4), and their structures were elucidated on the basis of spectroscopic and chemical methods.
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