Improvements in the enzymatic synthesis of chiral amines

C - Chemistry – Metallurgy – 12 – P

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C12P 13/00 (2006.01) C12P 13/04 (2006.01) C12P 13/06 (2006.01) C12P 41/00 (2006.01)

Patent

CA 2322605

2-Aminopropane is used as the amine donor in the stereoselective synthesis of a chiral amine from a ketone with a transaminase. In a typical embodiment, (S)- 1-methoxy-2-aminopropane is prepared by bringing methoxyacetone into contact with a transaminase in the presence of 2-aminopropane as an amine donor until a substantial amount of methoxyacetone is converted to (S)-1-methoxy-2- aminopropane and 2-aminopropane is converted to acetone. In a second embodiment, L-alanine is prepared by bringing pyruvic acid into contact with a transaminase in the presence of 2-aminopropane as an amine donor.

L'invention concerne l'utilisation de 2-aminopropane comme donneur d'amine dans la synthèse stéréosélective d'une amine chirale à partir d'une cétone avec une transaminase. Dans un mode de réalisation caractéristique, on prépare (S)-1-méthoxy-2-aminopropane en mettant une méthoxyacétone en contact avec une transaminase en présence de 2-aminopropane comme donneur d'amine jusqu'à ce qu'une quantité importante de méthoxyacétone soit convertie en (S)-1-méthoxy-2-aminopropane et que 2-aminopropane soit convertie en acétone. Dans un deuxième mode de réalisation, on prépare une L-alanine en mettant un acide pyruvique en contact avec une transaminase en présence de 2-aminopropane comme donneur d'amine.

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