Exploration of Aldol Reactions Catalyzed by Stereoselective Pyruvate Aldolases with 2‐Oxobutyric Acid as Nucleophile
作者:V. Laurent、A. Uzel、V. Hélaine、L. Nauton、M. Traïkia、T. Gefflaut、M. Salanoubat、V. de Berardinis、M. Lemaire、C. Guérard‐Hélaine
DOI:10.1002/adsc.201900128
日期:——
family PF03328, recently described to be able to use hydroxypyruvic acid as nucleophile substrate, were shown to also catalyse aldol adducts formation from 2‐oxobutyric acid. A 1H NMR‐based assay was used to screen 21 aldolases for their activity towards 2‐oxobutyric acid and to predict their stereoselectivity at position 3 of the aldol adducts. The best biocatalysts were then proved to be strictly (3S)‐selective
Pfam家族PF03328的丙酮酸醛缩酶最近被描述为能够使用羟基丙酮酸作为亲核试剂底物,并且还催化2-氧代丁酸形成醛醇加合物。阿1基于NMR-H测定用于画面21醛缩酶对它们的活性朝-2-氧代丁酸和在醇醛加合物的3位预测其立体选择性。然后最好的生物催化剂被证明严格(3小号)-选择性的。与该家族中已知的很少在第4位具有立体选择性的酶相反,突出显示了三种醛缩酶允许选择性进入(3 S,4 R)或(3 S,4 S)阿尔多斯。最终制备并分离了七种以前从未描述过的3-脱氧-3-甲基果糖酸,并具有良好的收率和立体选择性。