A new lupane-triterpene carboxylic acid (1), together with two known 24-nor-lupane-triterpene carboxylic acids, 24-nor-11α-hydroxy-3-oxo-lup-20(29)-en-28-oic acid and 24-nor-3α,11α-dihydroxy-lup-20(29)-en-28-oic acid, were isolated from the aerial part of Acanthopanax trifoliatus. The structure of 1 was determined to be 11α,23-dihydroxy-3-oxo-lup-20(29)-en-28-oic acid on the basis of spectroscopic data, including IR, HR-ESI-MS, PMR, 13C NMR, 1H-1H COSY, HSQC, and HMBC, and comparison with published references.
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Acknowledgment
This research was supported by the National Foundation for Science & Technology Development (NAFOSTED) of Vietnam (code: 104.01-2010.48). We thank Mr. Ngo Van Trai for plant identification.
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Published in Khimiya Prirodnykh Soedinenii, No. 2, March–April, 2013, pp. 234–235.
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Tam, N.T., Thien, D.D., Nhung, L.T.H. et al. A new lupane triterpenoid from the aerial part of Acanthopanax trifoliatus . Chem Nat Compd 49, 274–276 (2013). https://doi.org/10.1007/s10600-013-0580-6
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DOI: https://doi.org/10.1007/s10600-013-0580-6