Phytochemical investigation on the concentrate of Huangjing wine, resulted in the isolation of three new tyrosol derivatives 4-hydroxyphenethyl 2-(R)-hydroxy-3-phenylpropionate (), 4-hydroxyphenethyl(4-hydroxy-3-methoxyphenyl)propionate () and 4-hydroxyphenethyl ethyl succinate (), together with 5 known compounds, ferulic acid (), L-phenyllactic acid (), hydroxytyrosol (), dihydroferulic acid (), cyclo(L-Pro-D-Tyr) (). Their structures were elucidated using spectroscopic analysis and by comparison with the literature data. All compounds displayed antioxidant effect in the DPPH (2,2-diphenyl-1-picrylhydrazyl) radical. Among them, the new compound exhibited obvious antioxidant effect, and new compounds and exhibited medium antioxidant effect.
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