Diastereoisomeric Salt Formation and Enzyme-Catalyzed Kinetic Resolution as Complementary Methods for the Chiral Separation of <i>cis</i>-/<i>trans</i>-Enantiomers of 3-Aminocyclohexanol
作者:Cara E. Brocklehurst、Kurt Laumen、Luigi La Vecchia、Duncan Shaw、Markus Vögtle
DOI:10.1021/op1002424
日期:2011.1.21
enzymatic kinetic resolution of Cbz-protected 3-aminocyclohexanols or direct diastereoisomeric salt formation with (R)-mandelic acid. The salt formation demonstrates how a single enantiomer, (1S,3S)-3-aminocyclohexanol (R)-mandelate, can be effectively isolated from the cis/trans racemic mixture and subsequently converted to the free amine, (1S,3S)-3-aminocyclohexanol, by ion-exchange chromatography.
该贡献证明了通过(Cbz-保护的3-氨基环己醇的酶促动力学拆分)或与(R)-扁桃酸直接形成非对映异构盐形成的(1 S,3 S)-3-氨基环己醇的制备规模合成。盐的形成证明了如何从顺式/反式外消旋混合物中有效分离出单一对映异构体(1 S,3 S)-3-氨基环己醇(R)-扁桃酸酯,然后将其转化为游离胺(1 S,3小号)-3-氨基环己醇,通过离子交换色谱法。我们还证明了如何通过非对映异构体盐的形成或酶促动力学拆分制备3-氨基环己醇的其他三种对映异构体。