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  • Title: A novel triterpenoid saponin from Polygala tenuifolia Willd.
    Author: Xu TH, Lv G, Xu YJ, Xie SX, Zhao HF, Han D, Si YS, Li Y, Niu JZ, Xu DM.
    Journal: J Asian Nat Prod Res; 2008; 10(7-8):813-6. PubMed ID: 18696336.
    Abstract:
    A new triterpenoid saponin, tenuifoside A, was isolated together with three known triterpenoid saponins 2, 3, and 4 from the roots of Polygala tenuifolia Willd. With the help of chemical and spectral analyses (IR, MS, 1D-NMR, and 2D-NMR), the structure of the new saponin was elucidated as 3-O-beta-d-glucopyranosyl presenegenin 28-O-beta-d-xylopyranosyl-(1 --> 3)-beta-d-xylopyranosyl-(1 --> 4)-[beta-D-apiofuranosyl-(1 --> 3)]-alpha-L-rhamnopyranosyl-(1 --> 2)-[4-O-p-methoxycinnamoyl]-[alpha-l-rhamnopyranosyl-(1 --> 3)]-beta-d-fucopyranosyl ester (1). Three known triterpenoid saponins (2-4) were identified on the basis of spectroscopic data.
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