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  • Title: Triterpene saponins from clematis mandshurica.
    Author: Shi S, Jiang D, Dong C, Tu P.
    Journal: J Nat Prod; 2006 Nov; 69(11):1591-5. PubMed ID: 17125227.
    Abstract:
    Four new triterpene saponins, clematomandshurica saponins A-D (1-4), together with three known saponins (5-7) have been isolated from the roots and rhizomes of Clematis mandshurica. Their structures were elucidated on the basis of their spectroscopic evidence and hydrolysis. Clematomandshurica saponins A and B showed significant inhibitory activity on cyclooxygenase-2 (IC50 = 2.66 and 2.58 microM, respectively).
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