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Method for producing chiral pyridine ethanol through biological catalysis

An ethanol and pyridyl technology, applied in the field of pharmaceutical engineering, can solve problems such as high cost and difficult chemical synthesis

Inactive Publication Date: 2015-01-07
QINGDAO UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] (S)-1-(3-pyridyl)ethanol is an important chiral building block for the synthesis of chiral drugs, fine chemicals and pesticides, due to the presence of 2 A chiral center makes chemical synthesis more difficult and costly

Method used

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  • Method for producing chiral pyridine ethanol through biological catalysis

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Prepare wet cyanobacteria by conventional methods ATCC 52264 Cells, used as catalysts for biocatalytic reactions.

[0020] The method for making the cotton gauze that has adsorbed the substrate is that the substrate 3-acetylpyridine is absorbed by cotton gauze with a size of 0.5cm×0.5cm to obtain the cotton gauze that has adsorbed the substrate, and the amount of substrate and cotton gauze is adjusted so that The mass ratio of substrate to cotton gauze was 0.35. Cotton gauze used is common cotton gauze, after buying from the market, be cut into 0.5cm * 0.5cm fritter, sterilize, aseptic preservation stand-by, other embodiment cotton gauze handles identically.

[0021] Add phosphate buffer solution to a 15L bottom ventilated stirring reaction tank, the filling coefficient is 0.6, the pH is 5, add the cotton gauze that has adsorbed the substrate 3-acetylpyridine, so that the substrate 3-acetylpyridine is added in an amount of 80 g / L, the content of corn steep liquor (i...

Embodiment 2

[0023] Prepare wet cyanobacteria by conventional methods ATCC 52264 Cells, used as catalysts for biocatalytic reactions.

[0024] The method for making the cotton gauze that has adsorbed the substrate is that the substrate 3-acetylpyridine is absorbed by cotton gauze with a size of 0.5cm×0.5cm to obtain the cotton gauze that has adsorbed the substrate, and the amount of substrate and cotton gauze is adjusted so that The mass ratio of substrate to cotton gauze was 0.33. Cotton gauze used is common cotton gauze, after buying from the market, be cut into 0.5cm * 0.5cm fritter, sterilize, aseptic preservation stand-by, other embodiment cotton gauze handles identically.

[0025] Add phosphate buffer solution to the 100L bottom ventilated stirring reaction tank, the filling coefficient is 0.6, the pH is 5, add the cotton gauze that has adsorbed the substrate 3-acetylpyridine, so that the substrate 3-acetylpyridine is added in an amount of 90 g / L, the content of corn steep liquor...

Embodiment 3

[0028] Prepare wet cyanobacteria by conventional methods ATCC 52264 Cells, used as catalysts for biocatalytic reactions.

[0029]The method for making the cotton gauze that has adsorbed the substrate is that the substrate 3-acetylpyridine is absorbed by cotton gauze with a size of 0.5cm×0.5cm to obtain the cotton gauze that has adsorbed the substrate, and the amount of substrate and cotton gauze is adjusted so that The mass ratio of substrate to cotton gauze was 0.35. Cotton gauze used is common cotton gauze, after buying from the market, be cut into 0.5cm * 0.5cm fritter, sterilize, aseptic preservation stand-by, other embodiment cotton gauze handles identically.

[0030] Add phosphate buffer solution to the 500L bottom ventilated stirring reaction tank, the filling coefficient is 0.6, the pH is 5, add the cotton gauze that has adsorbed the substrate 3-acetylpyridine, so that the substrate 3-acetylpyridine is added in an amount of 85g / L, the content of corn steep liquor (...

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Abstract

A method for producing chiral pyridine ethanol through biological catalysis is characterized in that photoactive (S)-1-(3-pyridyl) ethanol is prepared through biological catalysis of tarlaromyces flavus cell organisms, a phosphate buffer is added into a reaction tank, and cotton gauze is added to control substrate and product concentrations. Tarlaromyces flavus cells are utilized for a biological catalysis reaction, the product yield is high, the enantiomeric excess (ee%) is high, and the application prospect is good.

Description

technical field [0001] The invention belongs to the technical field of pharmaceutical engineering, and in particular relates to a technology for preparing chiral pharmaceutical intermediate (S)-1-(3-pyridyl)ethanol by biocatalysis of cyanobacteria cells. Background technique [0002] Chiral (S)-1-(3-pyridyl)ethanol is an important intermediate in the synthesis of chiral drugs, fine chemicals, pesticides and other special materials. Biocatalytic asymmetric reactions have the advantages of environmental friendliness, mild conditions, and high selectivity. As a green and efficient way to prepare hydroxyl chiral compounds, they are increasingly used in the production of some high value-added chiral compounds. Biocatalytic preparation of chiral (S)-1-(3-pyridyl)ethanol has a good application prospect. [0003] Biocatalysis has outstanding advantages such as high catalytic efficiency, strong selectivity, mild conditions, and environmental friendliness. It is an important method t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C12P17/12C12R1/01
Inventor 刘鹏程刘均洪
Owner QINGDAO UNIV OF SCI & TECH