Several benzophenone-β-turned dipeptide-alkyl chain molecules were prepared. In acetonitrile, intramolecular photochemical reaction of the synthetic molecules was investigated. The photoexcited benzophenone moiety abstracted selectively a hydrogen of the alkyl chain in the molecule. Such a site selectivity showed that the β-turned conformation might be rigid enough for the hydrogen abstraction in the excited state.
制备了几种
苯并
苯酮-β-转角二肽-烷基链分子。在
乙腈中研究了合成分子的分子内光
化学反应。激发态的
苯并
苯酮部分选择性地从分子中的烷基链上提取
氢。这种位点选择性表明,β-转角构象可能足够刚性,以便在激发态下进行
氢提取。