substituted-β-ketoesters to the corresponding β-hydroxy esters with excellent yields and stereoselectivities (ee and de >99 %). The reactions described herein followed a biocatalytic dynamic kinetic reductive resolution (DKRR) pathway, which is reported for the first time with such substrates. It was found that the enzyme system can accept substituted mono-aryl rings with different electronic natures
来自肺炎克雷伯菌的生长细胞的酮还原酶(NBRC 3319)是一种高效的试剂,可将外消旋的α-苄基/肉桂基取代的β-
酮酸酯转化为相应的β-羟基酯,并具有出色的收率和立体选择性(ee和de> 99%)。本文所述的反应遵循
生物催化动态动力学还原拆分(DKRR)途径,首次报道了这种底物。发现该酶系统可以接受具有不同电子性质的取代的单芳基环。另外,它还在母体β-
酮酸酯的α-位接受取代的
萘基环和杂芳基环。然后将合成的对映体纯β-羟基酯合成为有价值的
四氢吡喃结构单元。