Synthetic C6‐Functionalized Aminoflavin Catalysts Enable Aerobic Bromination of Oxidation‐Prone Substrates
作者:Alexandra Walter、Golo Storch
DOI:10.1002/anie.202009657
日期:2020.12.7
functional groups in the peptide environment of the flavin cofactor. We report synthetic flavin catalysts that contain C-6 amino modifications at the isoalloxazine core and are consequently capable of mediating halogenations outside the peptide surrounding. The catalysts are competent in selective, biomimetic bromination of oxidation-prone phenols, flavones, and flavanones using a halide salt in combination
黄酮酶通过氢过氧化物中间体催化氧化,这是由分子O 2活化引起的。这些反应(例如羟基化和卤化)取决于黄素辅因子在肽环境中官能团的附加催化活性。我们报告了合成的黄素催化剂,其在异四恶嗪核心处含有C-6氨基修饰,因此能够在肽周围的肽外介导卤化作用。该催化剂具有在可见光照射下,结合卤化物盐和草酸2,6-lut啶鎓作为黄素还原剂,对易氧化的酚,黄酮和黄烷酮进行选择性,仿生溴化的能力。我们的研究显示了堆积的双黄素的有益作用,以及黄素修饰物的催化活性。