A new C21-steroidal cynansteroid O (1), together with one new natural product 20-hydroxylateqingyangshengenin (2), and three known compounds (3–5) were isolated from the roots of Cynanchum auriculatum. The chemical structures were elucidated by analyses of physio-chemical properties and spectral data and compared with the published data with given references. Compounds 1–3 were isolated for the first time from the roots of C. auriculatum.
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Acknowledgment
This work was supported by grants from the National Natural Science Foundation of China (31760529 and U1812403), the Natural Science and Technology Foundation of Guizhou Province (QKH foundation-ZK [2021] General 138), and the Natural Science Foundation of Guizhou Province (QKHZYD[2022]4015).
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Published in Khimiya Prirodnykh Soedinenii, No. 3, May–June, 2023, pp. 434–436.
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Huang, Lj., Fan, Ym., Jin, J. et al. A New C21-steroidal Cynansteroid O from Roots of Cynanchum auriculatum. Chem Nat Compd 59, 512–514 (2023). https://doi.org/10.1007/s10600-023-04038-z
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DOI: https://doi.org/10.1007/s10600-023-04038-z