申请人:カディラ ヘルスケア リミティド
公开号:JP2013541942A
公开(公告)日:2013-11-21
The present invention relates to 3-hydroxy-1- (3- (trifluoromethyl) -5,6-dihydro- [1,2,4] triazolo [4,3-a] pyrazin-7 (8H) -yl)- Racemic form of 4- (2,4,5-trifluorophenyl) butan-1-one (Formula 1) (R / S), or its optically active form (S or R), or an enantiomer of any form A method of preparing an enantiomeric excess mixture is provided. The method comprises: a) 4-oxo-4- [3- (trifluoromethyl) -5,6-dihydro [1,2,4 of formula (III) in the presence of a suitable cofactor under suitable conditions ] Triazolo [4,3-a] pyrazin-7 (8H) -yl] -1- (2,4,5-trifluorophenyl) butan-2-one, suitable oxidoreductase, or a suitable variant thereof Reacting with; and b) 3-hydroxy-1- (3- (trifluoromethyl) -5,6-dihydro- [1,2,4] triazolo [4,3-a] pyrazin-7 (8H) -yl) -4- Racemic form of (2,4,5-trifluorophenyl) butan-1-one (R / S), or its optically active form (S or R), or any form of enantiomeric excess mixture Isolating) including. [Selection figure] None
本发明涉及4- (2,4,5-三氟苯基) 丁酮的3-羟基-1-(3-(三氟甲基)-5,6-二氢-[1,2,4]三唑[4,3-a]吡嗪-7(8H)-基)-外消旋形式(R / S)或其光学活性形式(S或R),或任何形式的对映体过量混合物的制备方法。该方法包括:a)在适当的辅因子存在下,在适当的条件下将4-氧代-4- [3-(三氟甲基)-5,6-二氢[1,2,4]三唑[4,3-a]吡嗪-7(8H)-基]-1-(2,4,5-三氟苯基)丁酮与适当的氧化还原酶或其适当的变体反应;和b)分离3-羟基-1-(3-(三氟甲基)-5,6-二氢-[1,2,4]三唑[4,3-a]吡嗪-7(8H)-基)-4-外消旋形式的(2,4,5-三氟苯基)丁酮(R / S)或其光学活性形式(S或R)或任何形式的对映体过量混合物。