complex alkylation reactions of leucoflavin derivatives are shown to give O-substituted products of a new type rather than N-substituted ones. Characteristic differences in the chemical behaviour of (iso)alloxazines and of their leuco-compounds are outlined. Stabilization and decomposition of flavosemiquinones have been further studied. It is shown, that flavin catabolism (N-10-dealkylation) occurs in
已显示白细胞黄素衍
生物的复杂烷基化反应产生了新型的O-取代的产物,而不是N-取代的产物。概述了(异)别恶嗪及其无色化合物的
化学行为的特征差异。
黄酮半醌的稳定和分解已被进一步研究。结果表明,黄素分解代谢(N-10脱烷基)在室温下以半醌型发生,既不限于羟烷基黄素,也不限于光催化。基于这些以及其他作者的最新发现,提出了一种
金属催化的黄素分解代谢的新机制。制备了1,3,10-三甲基-亮黄素,发现在氧化时可得到稳定的单体半醌。