HERSTELLUNG VON ALPHA -HYDROXY-CARBOXY SÄURE MIT HILFE VON EINEM GEKOPPELTEN ENZYM SYSTEM

摘要

An economical and expedient method is disclosed for the preparation of alpha-hydroxy-carboxylic acids or salts thereof in very high enantiomeric purity which comprises oxidizing a corresponding alpha-amino-carboxylic acid or salt thereof using an amino acid deaminase followed by reducing the corresponding alpha-keto-carboxylic acid or salt produced using a D- or L-lactate dehydrogenase in the combination with an electron donor and an enzyme/substrate system for recycling the electron donor. The resulting alpha-hydroxy-carboxylic acids, hydrates, and salts thereof are valuable components and intermediates in the preparation of chiral compounds, especially pharmaceuticals. This invention also relates to the use of alpha-amino-carboxylic acids, hydrates, and salts thereof and a coupled enzyme system in the production of alpha-hydroxy-carboxylic acids, hydrates, and salts thereof.