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  • Title: Two new triterpenoid saponins from Ardisia crenata.
    Author: Liu DL, Wang NL, Zhang X, Gao H, Yao XS.
    Journal: J Asian Nat Prod Res; 2007 Mar; 9(2):119-27. PubMed ID: 17454309.
    Abstract:
    Two new triterpenoid saponins, ardisicrenoside K (1) and ardisicrenoside L (2), have been isolated from the roots of Ardisia crenata Sims. Their structures have been determined as 3beta-O-[alpha-L-rhamnopyranosyl-(1 --> 2)-beta-D-glucopyranosyl-(1 --> 4)-[beta-D-glucopyranosyl-(1 --> 2)]-alpha-L-arabinopyranosyl]-13beta,28-epoxy-16-oxo-30,30-dimethoxyoleanane and 3beta-O-[beta-D-xylopyranosyl-(1 --> 2)-beta-D-glucopyranosyl-(1 --> 4)-[beta-D-glucopyranosyl-(1 --> 2)]-alpha-L-arabinopyranosyl]-13beta,28-epoxy-16alpha,20-dihydroxyoleanane by means of chemical evidences and spectral analysis. Their weak anti-fungal activity against the plant pathogenic fungus Pyricularia oryzae was evaluated in vitro.
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