l-Proline-derived ligands to mimic the ‘2-His-1-carboxylate’ triad of the non-haem iron oxidase active site
作者:Victoria J. Dungan、Shwo Mun Wong、Sarah M. Barry、Peter J. Rutledge
DOI:10.1016/j.tet.2012.02.031
日期:2012.4
coupling l-proline to 2,6-bis(bromomethyl)pyridine, 2-(bromomethyl)-6-((tert-butyldimethylsilyloxy)methyl)pyridine and picolinic acid, we have generated several new ligand architectures designed to complex with iron(II) and mimic the NHIO active site. The resulting iron complexes promote modest levels of alkene dihydroxylation and allylic oxidation using hydrogen peroxide as oxidant.
非血红素铁(II)氧化酶(NHIOs)催化生物学中的各种氧化转化。NHIO活性位点的铁结合环境通常包含氨基酸侧链的“ 2-His-1-羧化物”面部三联体,该基序已成为酶家族的定义性特征。为了达到仿生,铁介导的CH活化的目标,我们从1-脯氨酸合成了一系列拟肽配体。通过将1-脯氨酸偶联到2,6-双(溴甲基)吡啶,2-(溴甲基)-6-((叔-丁基二甲基甲硅烷氧基)甲基)吡啶和吡啶甲酸,我们产生了几种新的配体结构,旨在与铁(II)络合并模拟NHIO活性位点。所得的铁配合物使用过氧化氢作为氧化剂促进适度的烯烃二羟基化和烯丙基氧化。