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[274] The first GPx mimics to reach widespread recognition is the widely studied small molecule named ebselen, or 2‐phenyl‐1,2‐benzisoselenazol‐3(2H)‐one, (also labelled as catalyst w in Scheme 24) which was first synthesized in 1924 (before the discovery of the nutritional importance of selenium!) and only later re‐discovered as an antioxidant agent in 1984, by the independent contributions of research groups of Sies and Wendel.[ 279 , 280 , 281 ] Mechanistic studies on the reaction of ebselen with peroxides and thiols started as early as in the late 80s, [282] and more than thirty years later, the all‐around description of its reactivity and of the reactivity of other GPx mimics is still an active area of research with contributions coming from both experimentalists and theoreticians.[ 281 , 283 , 284 ] The reactivity of organoselenides as GPx‐mimics has been extensively investigated and reviewed,[ 12 , 274 , 276 ] thus in the following we only highlight the origin of the field and a couple of fundamental points about our current mechanistic understanding of three different organoselenium species, namely ebselen, diphenyl diselenide and monoselenides
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Ouyang and SR