Enantioselective Hydrolysis of Functionalized 2,2-Disubstituted Oxiranes with Bacterial Epoxide Hydrolases
作者:Andreas Steinreiber、Ingrid Osprian、Sandra F. Mayer、Romano V. A. Orru、Kurt Faber
DOI:10.1002/1099-0690(200011)2000:22<3703::aid-ejoc3703>3.0.co;2-3
日期:2000.11
ether-oxygen to the stereogenic quaternary carbon center of the oxirane ring had a profound influence on the enantioselectivity, and several oxiranes were resolved with good to excellent selectivities. The enantiomerically enriched epoxides and vicinal diols thus obtained contain a useful “synthetic handle” in their side chain, which allows their use as building blocks in asymmetric synthesis.
使用 11 种细菌菌株的环氧化物水解酶活性研究了带有各种氧官能团的 2,2-二取代环氧乙烷的生物水解。结果表明,活性和选择性强烈依赖于底物结构和生物催化剂。尽管具有游离羟基的底物没有被转化,但它们的类似物,被保护为醚,被广泛接受。这使得通过根据尺寸和极性正确选择醚组,可以方便地调制对映射性。发现醚-氧与环氧乙烷环的立体四元碳中心的距离对对映选择性有深远的影响,并且几种环氧乙烷以良好到极好的选择性分离。