TITLE

Asymmetric reduction of prochiral ketones to chiral alcohols catalyzed by plants tissue

AUTHOR(S)
Zhong-Hua Yang; Rong Zeng; Gai Yang; Yu Wang; Li-Zhen Li; Zao-Sheng Lv; Man Yao; Bin Lai
PUB. DATE
September 2008
SOURCE
Journal of Industrial Microbiology & Biotechnology;Sep2008, Vol. 35 Issue 9, p1047
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
As an important organic compound, chiral alcohols are the key chiral building blocks to many single enantiomer pharmaceuticals. Asymmetric reduction of the corresponding prochiral ketones to produce the chiral alcohols by biocatalysis is one of the most promising routes. Asymmetric reduction of different kinds of non-natural prochiral ketones catalyzed by various plants tissue was studied in this work. Acetophenone, 4′-chloroacetophenone and ethyl 4-chloroacetoacetate were chosen as the model substrates for simple ketone, halogen-containing aromatic ketone and β-ketoesters, respectively. Apple ( Malus pumila), carrot ( Daucus carota), cucumber ( Cucumis sativus), onion ( Allium cepa), potato ( Soanum tuberosum), radish ( Raphanus sativus) and sweet potato ( Ipomoea batatas) were chosen as the biocatalysts. It was found that these kinds of prochiral ketoness could be reduced by these plants tissue with high enantioselectivity. Both R- and S-form configuration chiral alcohols could be obtained. The e.e. and chemical yield could reach about 98 and 80% respectively for acetophenone and 4′-chloroacetophenone reduction reaction with favorable plant tissue. And the e.e. and yield for ethyl 4-chloroacetoacetate reduction reaction was about 91 and 45% respectively.
ACCESSION #
33937115

 

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