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。
Metal-Free Catalytic Boration at the β-Position of α,β-Unsaturated Compounds: A Challenging Asymmetric Induction
作者:Amadeu Bonet、Henrik Gulyás、Elena Fernández
DOI:10.1002/anie.201001198
日期:——
Enantiomerically enriched secondary organoboronates containing β‐carbonyl functional groups have been prepared using an unprecedented organocatalytic system (see scheme). The use of chiral tertiary phosphorus compounds induced ee values of up to 95 % in the absence of transition metals.
Reductive biotransformation of carbonyl compounds—application of fungus, Geotrichum sp. G38 in organic synthesis
作者:Gu Jian-Xin、Li Zu-Yi、Lin Guo-Qiang
DOI:10.1016/s0040-4020(01)87947-3
日期:1993.6
The microbial transformation of 2- and 3-oxo esters and diketones with Geotrichum sp. G38 and its application to the syntheses of the key intermediates of several bioactive compounds such as (R)-denopamine 8, (R)-fluoxetine 11 and (2S, 3R)-sitophilate 14 were described.
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.
Ohta, Hiromichi; Ozaki, Kazuhiko; Tsuchihashi, Gen-ichi, Agricultural and Biological Chemistry, 1986, vol. 50, # 10, p. 2499 - 2502
Utilisation des methodes biologiques pour la preparation de synthons chiraux : I-reduction de β-dicetones acycliques par saccharomyces cerevisiae (levure de boulanger)