Bioassay-guided fractionation of the cytotoxic acid hydrolysate of the total ginsenosides of Panax ginseng C. A. Meyer (Araliaceae) afforded a new ginsenoside, (20S,22S)-dammar-22,25-epoxy-3β,12β,20-triol (1), along with five known ginsenosides, 20R,24R-dammar-20(24)-epoxy-3β,12β,25-triol (2), 20R-panaxdiol (3), dammar-(E)-20(22)-ene-3β,12β,25-triol (4), 20R-protopanaxadiol (5), and 20R-dammar-25-ethoxy-3β,12β,20-triol (6). Their structures were elucidated on the basis of spectroscopic data. Among the compounds isolated, compound 1 showed strong cytotoxic activity against human cancer cell lines SW1116, HCT116, and A549.
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Acknowledgment
This project was financially supported by National Natural Science Foundation of China (No. 31070308) and Key Project of the National Eleventh-Five Year Research Program of China (2009ZX09103-365). We are also grateful to the Changchun Institute of Applied Chemistry, Chinese Academy of Sciences for providing spectroscopic data.
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Published in Khimiya Prirodnykh Soedinenii, No. 4, July–August, 2014, pp. 595–597.
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Liu, J., Yang, Y., Yin, J. et al. Structure of Acid Hydrolysate of Total Ginsenosides and Their Cytotoxic Activity. Chem Nat Compd 50, 687–690 (2014). https://doi.org/10.1007/s10600-014-1053-2
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DOI: https://doi.org/10.1007/s10600-014-1053-2