Chemical Constituents from Resin of Styrax tonkinensis
Objective; To investigate the chemical components of Styrax tonkinensis. Method;Chromatographic technologies were used for separation and purification, while physicochemical properties and spectral analysis were used for structure elucidation. Result; Eleven compounds were isolated and their structures were identified as 19α-hydroxy-3-oxo-olean-12-en-28-oic acid (1) , 6β-hydroxy-3-oxo-olean-12-en-28-oic acid (2), sumaresinolic acid (3), siaresinolic acid (4), oleanolic acid (5), 4- [ (E) -3-ethoxyprop-l-enyl] -2-methoxyphenol ( 6 ) , benzoic acid ( 7 ) , vanillin ( 8 ) , vanillic acid ( 9 ) , coniferyl aldehyde ( 10 ) , dehydrodivanillin (11). Conclusion; Except for compound 7, the other compounds were isolated from S. tonkinensis for the first time.
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