Six dammarane ginsenosides, 20(R)-dammar-25-ethoxy-3β,12β,20-triol (1), 3β,6α,12β-triol22,23,24,25,26,27-hexanordammaran-20-one (2), dammar-(E)-20(22)-ene-3β,12β,25-triol (3), 20(S)-dammar-3β,12β,20,25-tetrol (4), and 20(R)-protopanaxadiol (5), 20(R)-protopanaxatriol (6), were isolated from the acid hydrolysate of Panax ginseng. Compound 1 was only mentioned in a patent literature, and there is no spectroscopic data elsewhere. This paper is the first to elucidate the structure of compound 1 on the basis of spectroscopic evidence. The biological activities of compounds 1–6, crude ginsenosides, and the ginsenoside-hydrolysate were determined in human colon carcinoma cell. Compounds 1–3 and the ginsenoside-hydrolysate exhibited anti-human colon carcinoma cell activity, with IC50 of 66.1, 72.4, 50.1, and 25.7 μg/mL, respectively.
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Acknowledgment
This research was financially supported by the National Natural Science Foundation of China (No. 31070308) and the 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. 6, November–December, 2012, pp. 901–903.
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Li, W., Yin, J.Y., Cong, Z.Y. et al. Anti-colon carcinoma cell activity of ginsenosides from the acid hydrolysate of Panax ginseng . Chem Nat Compd 48, 1017–1020 (2013). https://doi.org/10.1007/s10600-013-0453-z
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DOI: https://doi.org/10.1007/s10600-013-0453-z