A new coumarin, 3-[(3-hydroxy-4-ethylpropanpicatephenyl)oxy]-6-methoxy-7-hydroxycoumarin (1), was isolated from the stems and branches of Daphne pedunculata. The structure was elucidated on the basis of spectroscopic and 2D NMR spectral analysis.

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Acknowledgment
The work was supported by the NCET Foundation program, NSFC (30725045 and 81102778), and partially supported by the Global Research Network for Medicinal Plants (GRNMP) and King Saud University, the Shanghai Leading Academic Discipline Project (B906), FP7-PEOPLE-IRSES-2008 (TCMCANCER Project 230232), the Key Laboratory of Drug Research for Special Environments, PLA, the Shanghai Engineering Research Center for the Preparation of Bioactive Natural Products (10DZ2251300), and the Scientific Foundation of Shanghai, China (09DZ1972200, 09DZ1975700, 09DZ1971500, 10DZ1971700).
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Published in Khimiya Prirodnykh Soedinenii, No. 3, May–June, 2013, pp. 365–366.
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Du, Jl., Xu, Wz., Cheng, XR. et al. A new coumarin from Daphne pedunculata . Chem Nat Compd 49, 426–427 (2013). https://doi.org/10.1007/s10600-013-0629-6
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DOI: https://doi.org/10.1007/s10600-013-0629-6

