Asymmetric reduction of ketones using recombinant E. coli cells that produce a versatile carbonyl reductase with high enantioselectivity and broad substrate specificity
The gene encoding a versatile biocatalyst that shows highenantioselectivity for a variety of ketones, SCR (Saccharomyces cerevisiae carbonyl reductase), has been identified, cloned, and expressed in Escherichia coli. Two types of expression systems with high NADPH-regenerating capacities have been constructed. One is the tandem system, where the genes encoding SCR and GDH (glucose dehydrogenase) are
编码,显示出对多种酮具有高对映选择性的通用基因的基因SCR(酿酒酵母羰基还原酶)已在大肠杆菌中鉴定,克隆和表达。已经构建了具有高NADPH再生能力的两种类型的表达系统。一个是串联系统,其中编码SCR和GDH(葡萄糖脱氢酶)的基因位于同一质粒中,另一个是双质粒系统,其中SCR和GDH的每个基因位于可以共存的单独质粒中在一个大肠杆菌细胞中 重组大肠杆菌不对称还原酮细胞产生合成有用的20种醇,其中11种对映体纯。这些产品之一的生产率高达41 g / L。
High Enantioselectivity and Broad Substrate Specificity of a Carbonyl Reductase: Toward a Versatile Biocatalyst
The gene encoding a versatile biocatalyst that shows high enantioselectivity for a variety of ketones, SCR (Saccharomyces cerevisiae carbonyl reductase), has been identified, cloned, and expressed in E coli. Recombinant E coli co-producing SCR and GDH (glucose dehydrogenase) is an easy-to-use, synthetically useful biocatalyst, and 8 out of the 16 alcohols obtained had enantiomeric purities of >98% ee. (C) 2005 Elsevier Ltd. All rights reserved.
Biomimetic Synthesis of (−)-Xestospongin A, (+)-Xestospongin C, (+)-Araguspongine B and the Correction of Their Absolute Configurations
作者:Jack E. Baldwin、Artem Melman、Victor Lee、Catherine R. Firkin、Roger C. Whitehead
DOI:10.1021/ja980765v
日期:1998.8.1
LAMBERT, P. H.;VAULTIER, M.;CARRIE, R., J. ORG. CHEM., 1985, 50, N 25, 5352-5356