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A chemoenzymatic synthesis of an androgen receptor antagonist

机译:化学酶法合成雄激素受体拮抗剂

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A new scalable enzymatic resolution approach to both enantiomers of trans-2-hydroxycyclohexanecarbonitrile (9 and 11) was developed. Treatment of the racemic mixture (4) with succinic anhydride in the presence of Novozym 435 led to selective acylation of one enantiomer to the corresponding hemisuccinate, which was separated from the unreacted enantiomer by a simple basic extraction. This procedure produced the desired enantiomer in high ee, while obviating the need for chromatography or expensive catalysts and ligands. The application of this protocol to the large-scale synthesis of an androgen receptor antagonist (1) is described.
机译:对反式-2-羟基环己烷甲腈(9和11)的两个对映异构体开发了一种新的可扩展的酶促拆分方法。在Novozym 435存在下,用琥珀酸酐处理外消旋混合物(4)导致一种对映异构体选择性酰化为相应的半琥珀酸酯,通过简单的碱性萃取将其与未反应的对映异构体分离。该方法以高ee产生所需的对映异构体,同时消除了对色谱法或昂贵的催化剂和配体的需求。描述了该方案在雄激素受体拮抗剂(1)的大规模合成中的应用。

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