Two new eudesmanes, 1α-hydroxy-11,13-dihydroisoalantolactone (1), 3α-hydroxy-11,13dihydroalantolactone (2), and one known compound were isolated from the roots of Inula helenium. Their structures were established on the basis of spectral evidence.
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Acknowledgment
The work was financially supported by the Scientific Research Foundation for Returning Overseas Chinese Scholars from Hebei Province and the Scientific Research Foundation of Hebei Province (08B032), as well as the China Postdoctoral Science Foundation to HCH (20070410869). We wish to extend our sincere thanks for financial support from Syngenta Ltd. (2008-Hebei Medical University-Syngenta-02).
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Published in Khimiya Prirodnykh Soedinenii, No. 3, pp. 315–317, May–June, 2010.
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Zhao, YM., Wang, Yj., Dong, M. et al. Two new eudesmanes from Inula helenium . Chem Nat Compd 46, 373–376 (2010). https://doi.org/10.1007/s10600-010-9620-7
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DOI: https://doi.org/10.1007/s10600-010-9620-7