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发明公开
CN103014082A (R)-4-氰基-3-羟基丁酸乙酯的生物制备方法 有权

(R)-4-氰基-3-羟基丁酸乙酯的生物制备方法
摘要：
一种(R)-4-氰基-3-羟基丁酸乙酯的生物制备方法，其以(S)-4-氯-3-羟基丁酸乙酯为底物，该底物在生物催化剂的作用下，与氰化钠反应生成目标产物(R)-4-氰基-3-羟基丁酸乙酯，所述的生物催化剂为重组卤代醇脱卤酶，所述的反应在pH为6-8的水相中进行。本发明通过采用重组卤代醇脱卤酶，使得底物浓度提高，酶用量降低，从而降低了生产成本，并且本发明通过对工艺的优化，使得产品的纯度和收率都有所提高。
摘要（英）：

The invention relates to a biological preparation method of (R)-4-cyano-hydroxybutanoate. According to the biological preparation method, (S)-4-chlorine-3-hydroxybutanoate is used as a substrate; under the action of a biocatalyst, the substrate reacts with sodium cyanide to generate a target product (R)-4-cyano-hydroxybutanoate; the biocatalyst is recombination halohydrin dehalogenase; and the reaction is carried out in a water phase with the pH of 6 to 8. According to the invention, by adopting the recombination halohydrin dehalogenase, the concentration of the substrate is improved and the enzyme dosage is reduced, so that production cost is reduced. Moreover, by optimizing the process, both purity and yield of the product are improved.

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