A review-biosynthesis of optically pure ethyl (S)-4-chloro-3-hydroxybutanoate ester: recent advances and future perspectives.
Ethyl (S)-4-chloro-3-hydroxybutanoate ester ((S)-CHBE) is a precursor of enantiopure intermediates used for the production of chiral drugs, including the cholesterol-lowering 3-hydroxy-3-methyl-glutaryl CoA reductase inhibitors (statins). The asymmetric reduction of ethyl 4-chloro-3-oxobutanoate ester (COBE) to (S)-CHBE by biocatalysis has several positive attributes, including low cost, mild reaction conditions, high yield, and a high level of enantioselectivity. During genome database mining of the yeast Pichia stipitis, our group found two novel carbonyl reductases (PsCRI and PsCRII) that have a promising future for the industrial production of (S)-CHBE with >99% enantiomeric excess. This review covers the main process of biosynthesis of (S)-CHBE: screening of microorganisms that catalyze the reduction of COBE to (S)-CHBE (I); gene cloning, expression, and characterization of carbonyl reductases for the production of (S)-CHBE in Escherichia coli (II); development of cofactor generation systems for regenerating cofactors (III); and biocatalysis of COBE to (S)-CHBE by recombinant E. coli (IV).
State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing, People's Republic of China.
Qi
Q
Ye
Pingkai
P
Ouyang
Hanjie
H
Ying
D000429:Alcohol Oxidoreductases / Q000235:genetics / Q000378:metabolism; D053898:Biosynthetic Pathways / Q000235:genetics; D001709:Biotechnology / Q000379:methods*; D002087:Butyrates / Q000378:metabolism*; D005656:Fungal Proteins / Q000235:genetics / Q000378:metabolism; D010843:Pichia / Q000235:genetics / Q000378:metabolism*; D013678:Technology, Pharmaceutical / Q000379:methods*
D002087:Butyrates; D005656:Fungal Proteins; C121244:ethyl 4-chloro-3-hydroxybutanoate; D000429:Alcohol Oxidoreductases