[論文]ナフタレノイド系化合物の合成とその抗酸化活性の評価
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Ohta, MakiPreparation of arylmethylenesuccinates from the reaction of arylaldehydes with succinic acid diester and Wittig reagent 2-(triphenyl-5^λ-phosphanylidene)-succinic acid 1-ethyl ester was examined to clarify that the latter reaction proceeded in more excellent yields than the former. The arylmethylenesuccinates obtained were converted into 4-hydroxynaphthoates by intramolecular cyclization in the presence of AcOK in Ac_2O followed by hydrolysis in 5％ Na_2CO_3 of water-ethanol solution. Next, the antioxidative activity was evaluated by measuring POV. It was suggested that the methoxy groups on 5-position and 7-position of hydroxynaphthoates is attributable to stabilization effect of hydroxyl radical for the antioxidative activity.
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