alexa Effect of ginger constituents and synthetic analogues on cyclooxygenase-2 enzyme in intact cells.


Journal of Nutrition & Food Sciences

Author(s): Tjendraputra E, Tran VH, LiuBrennan D, Roufogalis BD, Duke CC

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Abstract Seventeen pungent oleoresin principles of ginger (Zingiber officinale, Roscoe) and synthetic analogues were evaluated for inhibition of cyclooxygenase-2 (COX-2) enzyme activity in the intact cell. These compounds exhibited a concentration and structure dependent inhibition of the enzyme, with IC(50) values in the range of 1-25 microM. Ginger constituents, [8]-paradol and [8]-shogaol, as well as two synthetic analogues, 3-hydroxy-1-(4-hydroxy-3-methoxyphenyl)decane and 5-hydroxy-1-(4-hydroxy-3-methoxyphenyl)dodecane, showed strong inhibitory effects on COX-2 enzyme activity. The SAR analysis of these phenolic compounds revealed three important structural features that affect COX-2 inhibition: (i) lipophilicity of the alkyl side chain, (ii) substitution pattern of hydroxy and carbonyl groups on the side chain, and (iii) substitution pattern of hydroxy and methoxy groups on the aromatic moiety. Copyright 2001 Academic Press. This article was published in Bioorg Chem and referenced in Journal of Nutrition & Food Sciences

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