Two new flavones, namely 5-hydroxy-2-(4′-hydroxyphenyl)-6,12,13-trimethoxypyrano-xanthene-4,9-dione (1) and 5-hydroxy-2-(3′-methoxy-4′-hydroxyphenyl)-6-methoxy-11-isopropyl-pyranochromene-4,9-dione (2), were isolated from Salvia plebeia. Their structures were elucidated by spectroscopic methods, including extensive 1D and 2D NMR spectral data. Compounds 1 and 2 were evaluated for their anti-angiogenic activities by the MTT assay with axitinib as positive control, and they displayed moderate anti-angiogenic activities with IC50 values of 14.07 and 11.25 μM, respectively.
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This study was supported by the Doctoral Research Initiation Fund Project of Jiangxi University of TCM (2018BSZR007).
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Published in Khimiya Prirodnykh Soedinenii, No. 6, November–December, 2020, pp. 878–880.
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Ma, Q., Wei, R., Lu, Q. et al. Two New Flavones from Salvia plebeia and Their Anti-Angiogenic Activities. Chem Nat Compd 56, 1019–1022 (2020). https://doi.org/10.1007/s10600-020-03218-5
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DOI: https://doi.org/10.1007/s10600-020-03218-5