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Beauveria bassiana capable of catalyzing asymmetric reduction reaction and application thereof

A Beauveria bassiana, asymmetric technology, applied in the field of fungi, can solve the problems of low optical purity and achieve the effect of high transformation rate

Active Publication Date: 2013-02-13
NINGBO INST OF TECH ZHEJIANG UNIV ZHEJIANG +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The invention provides a Beauveria bassiana that can catalyze an asymmetric reduction reaction. The strain can express a carbonyl reductase with high stereoselectivity, which solves the problem that the traditional wild strains cannot be reduced to obtain a single optically pure compound and the optical purity is low.

Method used

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Examples

Experimental program
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Effect test

Embodiment Construction

[0026] 1. Medium

[0027] SDY slant medium: glucose 4%, yeast powder 1%, peptone 1%, agar 2%.

[0028] SDY selective medium: glucose 4%, yeast powder 1%, peptone 1%, agar 2%,

[0029] Ethyl 4-chloroacetoacetate 0.1% to 1.0%.

[0030] SDY liquid seed medium: glucose 4%, yeast powder 1%, peptone 1%.

[0031] SDY liquid fermentation medium: glucose 4%, yeast powder 1%, peptone 1%.

[0032] 2. Separation and purification of strains

[0033] Screening, solid culture and preservation of strains: The wild strain of Beauveria bassiana was isolated from collected corn borer larvae by conventional methods, and purified and cultured by SDY medium. Pick a circle of strains from the SDY slant medium to streak and inoculate the fresh SDY slant medium, culture in a 28°C incubator for 2-7 days, and store in a 4°C refrigerator.

[0034] Mutagenesis and breeding of strains: pick a loop of strains from fresh SDY slant medium to inoculate SDY liquid seed medium, culture at 28°C on a shaker for 2 days, prepar...

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Abstract

The invention discloses beauveria bassiana capable of catalyzing an asymmetric reduction reaction, the bacterial strain is preserved in a China microorganism culture preservation management council common microorganism center, a preservation number is CGMCC NO.6345, and preservation time is July 12th, 2012. The bacterial strain can express carbonyl reductase high in stereoselectivity. When the bacterial strain is used for conducting whole-cell catalysis of 4-ethyl acetoacetate, enantiomer excess of S-4-chlorine-ethyl-3-hydroxybutyrate in products is 100% e.e.; and when the bacterial strain is used for conducting whole-cell catalysis of N,N-dimethyl-3-oxo-3-(2-thiophene)-1-propylamine hydrochloride, enantiomer excess of (S)-N,N-dimethyl-3-hydroxy-3-(2-thiophene)-1- propylamine hydrochloride is 100% e.e..

Description

Technical field [0001] The invention relates to a fungus, in particular to a beauveria bassiana capable of catalyzing an asymmetric reduction reaction and an application thereof. Background technique [0002] Ethyl 4-chloro-3-hydroxybutyrate contains active chlorine atoms, which makes it widely used in some asymmetric synthesis and becomes an important chiral intermediate for many chiral drugs. S-4-chloro-3-hydroxybutyrate (S-CHBE) is a key chiral intermediate for the synthesis of Slagenins B and C, HMG-CoA reductase inhibitors, and it can also be reduced to 1,4-dihydro Pyridine type beta blocker. Ethyl R-4-chloro-3-hydroxybutyrate can be used as a key chiral intermediate for the synthesis of L-carnitine, R-γ-amino-β-hydroxybutyric acid, (-)-large lactimide A, And can be transformed into (+)-negative. [0003] Duloxetine, whose chemical name is (+)-SN-methyl-γ-yl-(1-naphthyloxy)-2-thienyl hydrochloride, is the active ingredient in Xinbaida, which is a 5 -A dual inhibitor of ser...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C12N1/14C12P7/62C12P17/00C12R1/645
Inventor 金志华胡升姚成志王爱珂金庆超杨郁张丽靖曹倩梅乐和
Owner NINGBO INST OF TECH ZHEJIANG UNIV ZHEJIANG
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