A Novel (<i>R</i>)-Imine Reductase from<i>Paenibacillus lactis</i>for Asymmetric Reduction of 3 <i>H</i>-Indoles
作者:Hao Li、Guang-Xiang Zhang、Liu-Mei Li、Yu-Shi Ou、Ming-Yang Wang、Chun-Xiu Li、Gao-Wei Zheng、Jian-He Xu
DOI:10.1002/cctc.201501170
日期:2016.2
A novel (R)‐imine reductase (PlRIR) from Paenibacillus lactis was heterologously overexpressed in Escherichia coli, purified and characterized. The purified PlRIR exhibited relatively high catalytic efficiency (kcat/Km=1.58 s−1 mm−1) towards 2,3,3‐trimethylindolenine. A panel of 3H‐indoles and 3H‐indole iodides were reduced by PlRIR to yield the corresponding products with good‐to‐excellent enantioselectivity
一种来自乳芽孢杆菌的新型(R)-亚胺还原酶(PI RIR)在大肠杆菌中异源过表达,纯化和鉴定。纯化的P1 RIR对2,3,3-三甲基吲哚啉表现出较高的催化效率(k cat / K m = 1.58 s -1 m m -1)。将3个面板ħ -indoles和3个ħ -吲哚碘化物通过减少PL RIR得到相应的产品具有良好至优良的对映选择性(66-98%ee值)。另外,PlRIR对其他类型的亚胺(例如吡咯啉,四氢吡啶和二氢异喹啉)也具有良好的活性,这表明底物的接受程度相当广泛。在100 mg规模的制备反应中,将100 m m的2,3,3-三甲基吲哚啉有效地转化为(R)-2,3,3-三甲基吲哚啉,ee率为96%,收率为81%。