Objective To study the chemical constituents in the dried stems of Acanthopanax leucorrhizus.
Methods The compounds were isolated and purified by normal/reverse phase silica gel column chromatography, polyamide column chromatography, preparative liquid chromatography, and recrystallization. The structural identification was achieved by correlating physicochemical properties with spectroscopic data.
Results A total of 19 compounds were isolated and purified from the methanol extract of the stem of Acanthopanax leucorrhizus, including trans-p-menthane-1α,2β,8-triol (1), kaurenoic acid (2), β-sitosterol palmitate (3), daucosterol (4), myristic acid (5), 3-hydroxy-1-(4-hydroxy-3-methoxyphenyl)propan-1-one (6), erythro-7-methoxysyr- ingylglycerol (7), (7S,8R)-syringoylglycerol (8), threo-5-hydroxy-3,7-dimethoxyphenyl-propane-8,9-diol (9), protocatechuic acid methyl ester (10), threo-2,3-bis-(4-hydroxy-3-methoxy-phenyl)-3-methoxy-propanol (11), eythro-2,3-bis-(4-hydroxy-3-methoxyphenyl)-3-methoxypropanol (12), isolariciresinol (13), lariciresinol(14), (-)-(2R,3R)-secoisolariciresinol (15), threo-7-methoxysyringylglycerol (16), C-veratroylglycol (17), 5’-methoxylariciresinol (18), and mesosecoisolariciresinol (19).
Conclusion Compounds 1, 3, 5-6, 8-9, 12-13, 15-17, and 19 were isolated from Araliaceae for the first time. Compounds 1, 3, 5-9, 11-13, 15-19 were isolated from plants of Acanthopanax Miq. for the first time. All compounds were isolated from this species for the first time.
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