Aim: To study the bioactive constituents of the flower of Castanea mollissima Blume.
Methods: Compounds were isolated and purified by column chromatography of silica gel and TLC. Structures were determined by various spectroscopic data, including IR, 1HNMR and 13CNMR, EIMS, FABMS and HMBC as well as comparison of the data with those reported in literatures.
Results: Five compounds were isolated and elucidated as myricetin (I), quercetin (II), gallic acid (III), 4-quinolinone-2-caboxylic acid (IV), (+) -isolariciresinol-9'-O-alpha-L-rhamnoside (V).
Conclusion: These compounds were separated from the flower for the first time and compound V is a new compounds, named chestnutlignansoide.
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