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  • Title: Two triterpenoid saponins from Neonauclea sessilifolia.
    Author: Itoh A, Tanahashi T, Nagakura N, Nishi T.
    Journal: Chem Pharm Bull (Tokyo); 2003 Nov; 51(11):1335-7. PubMed ID: 14600387.
    Abstract:
    From the dried roots of Neonauclea sessilifolia (Rubiaceae), two new triterpenoid saponins, 3-O-beta-D-glucopyranosyl-(1-->2)-beta-D-quinovopyranosyl quinovic acid (1) and 3-O-alpha-L-rhamnopyranosyl-(1-->4)-beta-D-quinovopyranosyl pyrocincholic acid 28-O-beta-D-glucopyranosyl-(1-->6)-beta-D-glucopyranosyl ester (2), were isolated, together with five known saponins. The structures of the new saponins were determined by spectroscopic and chemical means.
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