Two new 4-phenylcoumarins, 12-acetoxysoulattrolide (1), inocalocyclide E (2), and one new 4-phenylcoumarin derivative, inocalophyllin C (3), together with three known 4-phenylcoumarins (4–6), and two 4-phenylcoumarin derivatives (7 and 8) were isolated from the stems and leaves of Calophyllum polyanthum Wall. ex Planch. & Triana. The absolute structures of compounds 1–3 were completely elucidated using a combination of 1D, 2D NMR techniques, HR-ESI-MS analyses, and ECD calculations.
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Acknowledgment
This research was funded by the National Natural Science Foundation of China (31860087) and the Yunnan Provincial Science and Technology Department (Nos. 2019HB025, 202005AE160004, and 202005AF150043).
In addition, Ting-Ting Cao and Jia Liu contributed equally to this work.
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Published in Khimiya Prirodnykh Soedinenii, No. 5, September–October, 2023, pp. 700–704.
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Cao, TT., Liu, J., Yang, TY. et al. Two New 4-Phenylcoumarins and a New 4-Phenylcoumarin Derivative From Calophyllum polyanthum. Chem Nat Compd 59, 829–834 (2023). https://doi.org/10.1007/s10600-023-04128-y
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DOI: https://doi.org/10.1007/s10600-023-04128-y