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- Title
Asymmetric synthesis of tert-butyl (3R,5S)-6-chloro-3,5-dihydroxyhexanoate using a self-sufficient biocatalyst based on carbonyl reductase and cofactor co-immobilization.
- Authors
Zhang, Xiao-Jian; Wang, Wen-Zhong; Zhou, Rong; Liu, Zhi-Qiang; Zheng, Yu-Guo
- Abstract
tert-Butyl (3R,5S)-6-chloro-3,5-dihydroxyhexanoate [(3R,5S)-CDHH] is the key chiral intermediate to synthesize the side chain of the lipid-lowering drug rosuvastatin. Carbonyl reductases showed excellent activity for the biosynthesis of (3R,5S)-CDHH. The requirement of cofactor NADH/NADPH leads to high cost for the industrial application of carbonyl reductases. In this study, a self-sufficient biocatalyst based on carbonyl reductase and NADP+ co-immobilization strategy was developed on an amino resin carrier LX-1000HAA (SCR-NADP+@LX-1000HAA). The self-sufficient biocatalyst achieved in situ cofactor regeneration and showed the activity recovery of 77.93% and the specific activity of 70.45 U/g. Asymmetric synthesis of (3R,5S)-CDHH using SCR-NADP+@LX-1000HAA showed high enantioselectivity (> 99% e.e.) and yield (98.54%). Batch reactions were performed for ten cycles without extra addition of NADP+, and the total yield of (3R,5S)-CDHH achieved at 10.56 g/g biocatalyst. The present work demonstrated the potential of the self-sufficient biocatalyst for the asymmetric biosynthesis of rosuvastatin intermediate.
- Subjects
CARBONYL reductase; ASYMMETRIC synthesis; COFACTORS (Biochemistry); ENZYMES; REDUCTASES; INDUSTRIAL costs; ANTILIPEMIC agents
- Publication
Bioprocess & Biosystems Engineering, 2020, Vol 43, Issue 1, p21
- ISSN
1615-7591
- Publication type
Article
- DOI
10.1007/s00449-019-02201-x