Selection, Purification, Characterisation, and Cloning of a Novel Heat-Stable Stereo-Specific Amidase from <i>Klebsiella </i><i>o</i><i>xytoca</i>, and Its Application in the Synthesis of Enantiomerically Pure (<i>R</i>)- and (<i>S</i>)-3,3,3-Trifluoro-2-hydroxy-2-methylpropionic Acids and (<i>S</i>)-3,3,3-Trifluoro-2-hydroxy-2-methylpropionamide
作者:Nicholas M. Shaw、Andrew Naughton、Karen Robins、Andreas Tinschert、Evelyne Schmid、Marie-Louise Hischier、Veronika Venetz、Josef Werlen、Thomas Zimmermann、Walter Brieden、Patricia de Riedmatten、Jean-Paul Roduit、Bertin Zimmermann、Roman Neumüller
DOI:10.1021/op020025d
日期:2002.7.1
amidase from Klebsiella oxytoca and used it to resolve (R,S)-3,3,3-trifluoro-2-hydroxy-2-methylpropionamide, giving (R)-3,3,3-trifluoro-2-hydroxy-2-methylpropionic acid and (S)-3,3,3-trifluoro-2-hydroxy-2-methylpropionamide. The (S)-amide could then be hydrolysed chemically to (S)-3,3,3-trifluoro-2-hydroxy-2-methylpropionic acid. The process can therefore be adapted to produce both (R)- and (S)-enantiomers
我们从产酸克雷伯菌中分离、表征和克隆了一种对映体特异性酰胺酶,并用它来解析 (R,S)-3,3,3-trifluoro-2-hydroxy-2-methylpropionamide,得到 (R)-3,3 ,3-三氟-2-羟基-2-甲基丙酸和 (S)-3,3,3-三氟-2-羟基-2-甲基丙酰胺。然后可以将(S)-酰胺化学水解成(S)-3,3,3-三氟-2-羟基-2-甲基丙酸。因此,该方法可适用于生产 3,3,3-三氟-2-羟基-2-甲基丙酸或 (S)-3,3,3-三氟-的 (R)-和 (S)-对映异构体2-羟基-2-甲基丙酰胺。生物催化步骤是从三氟乙酰乙酸乙酯开始的化学和生物催化组合路线的一部分。产品通常具有大于 98% 的纯度,分离后的 ee 值基本为 100%。