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氧的浓度超过正常值会引起毒性效应。超氧负离子基(O_2~(?))作为生物体内代谢产生的一种活性中间体,在发现超氧化物歧化酶(SOD)是其专一清除剂后,引起人们广泛的兴趣,并对 O_2~(?)与人类的某些疾病和癌症的关系进行了研究。由于·OH、~1O_2和 HO_2等也是高活性的物质,有人认为在研究 O_2~(?)的毒害效应时,不应忽视这些由 O_2~(?)可衍生出来的活性氧。为阐明 O_2~(?)在生物体内的作用,还需对 O_2~(?)化学作更多更深入的基础工作。黄酮类化合物是一大类重要的有生化意义的化合物,已有许多关于槲皮素氧化反应的报
Oxygen concentrations that exceed normal levels can cause toxic effects. Superoxide anion (O_2 ~ (?)), As an active intermediate in metabolism, has attracted widespread interest after its discovery as a specific scavenger. O_2 ~ (?) And some human diseases and cancer were studied. Because · OH, ~ 1O_2 and HO_2 are also highly active substances, some people think that in the study of toxic effects of O_2 ~ (?), These O_2 ~ (?) Derived reactive oxygen species should not be ignored. In order to elucidate the role of O_2 ~ (?) In vivo, more and more basic work on O_2 ~ (?) Chemistry is needed. Flavonoids are a large class of important biochemical compounds and many have been reported for the oxidation of quercetin