Analogs of the cyclic nitrone free radical trap 1 (3,3-dimethyl-3,4-dihydroisoquinoline N-oxide, a cyclic analog of phenyl-tert-butylnitrone (PBN)) were prepared in which (1) the fused phenyl ring was replaced with a naphthalene ring, an electron rich heterocycle, or a dimethylphenol, (2) the nitrone-containing ring comprised five, six, or seven atoms, and (3) the gem-dimethyl group was replaced with
制备环状硝酮自由基阱1的类似物(3,3-二甲基-
3,4-二氢异喹啉N-氧化物,苯基叔丁基硝酮(PBN)的环状类似物),其中(1)为稠合的苯环(2)含氮原子的环包含五个,六个或七个原子,并且(3)宝石二甲基被螺环基团取代;最具活性的
抗氧化剂,带有与7元环硝酮(化合物6h)融合的二甲基
苯酚,在体外抑制脂质过氧化,IC50为22 microM,比1的IC50改善75倍。先前观察到的亲脂性之间的相关性这项研究进一步证实和完善了活性与脂质过氧化的关系。此外,某些类别的化合物(即,