HPLC-CD selectivity assay for alcohol dehydrogenases

Area of Science:

• Organic Chemistry
• Biocatalysis
• Analytical Chemistry

Background:

• Enantioselective reductions are crucial for synthesizing target molecules.
• Optimizing reaction conditions for enantioselective synthesis is often time-consuming due to analytical challenges.

Purpose of the Study:

• To develop a streamlined approach for identifying optimal conditions for enantioselective reductions.
• To establish an efficient protocol for the alcohol dehydrogenase-catalyzed reduction of a specific substrate.

Main Methods:

• Combined use of high-performance liquid chromatography (HPLC) and circular dichroism (CD) spectroscopy.
• Enzymatic reduction catalyzed by alcohol dehydrogenase.
• Synthesis of 1-phenyl-2-propyn-3-trimethylsilyl-1-on (1).

Main Results:

• An efficient protocol was developed for the alcohol dehydrogenase-catalyzed reduction of substrate (1).
• The combined HPLC-CD method facilitated rapid screening and identification of suitable reaction conditions.
• Enantiomerically pure alcohols were successfully produced.

Conclusions:

• The integration of HPLC and CD significantly accelerates the optimization process for enantioselective reductions.
• This methodology provides an efficient route for biocatalytic synthesis of chiral alcohols.