• novel quercetin derivatives: synthesis and screening for anti-oxidant activity and aldose reductase inhibition

    جزئیات بیشتر مقاله
    • تاریخ ارائه: 1392/07/24
    • تاریخ انتشار در تی پی بین: 1392/07/24
    • تعداد بازدید: 887
    • تعداد پرسش و پاسخ ها: 0
    • شماره تماس دبیرخانه رویداد: -
     the direct acylation of quercetin (i) with 3-chloro-2,2-dimethylpropanoyl chloride (ii) gives a complex reaction mixture. the synthesis of different acylated quercetin with from mono- to tetra-o-substituted functions was achieved in a simple procedure wherein the yield of isomers depended on the stoichiometric ratio of reagents. the crude reaction mixtures were analysed (lc-ms) and compared with the isolated products. unambiguous structural characterisation of isomeric quercetin derivatives was confirmed by nmr analysis. in addition, the quercetin dimer can be obtained in a high yield in the simple procedure. the anti-oxidant activity and aldose reductase inhibition of the compounds were screened with the aim of providing bi-functional remedies to treat diabetic complications and other diseases where oxidative stress and the polyol pathway are key etiological factors.

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