Process Optimisation Studies and Aminonitrile Substrate Evaluation of
<i>Rhodococcus erythropolis</i>
SET1, A Nitrile Hydrolyzing Bacterium
作者:Tatenda M. Mareya、Tracey M. Coady、Catherine O'Reilly、Michael Kinsella、Lee Coffey、Claire M. Lennon
DOI:10.1002/open.202000088
日期:2020.4
enantioselectivity and activity. The effect of the addition of organic solvents to the biotransformation mixture was also determined. The results of the study suggested that SET1 is suitable for use in selected organo‐aqueous media at specific ratios only. The functional group tolerance of the isolate with unprotected and protected β‐aminonitriles, structural analogues of β‐hydroxynitriles was also investigated
在具有底物3-羟基丁腈的腈水解红球菌SET1的腈水解反应中,完成了一系列全面的优化研究,包括pH,溶剂和温度。这些确定的温度为25°C,pH为7是保留对映选择性和活性的最佳条件。还确定了向有机转化混合物中添加有机溶剂的效果。研究结果表明,SET1仅适用于特定比例的所选有机水性介质。带有未保护和受保护的β-氨基腈(β的结构类似物)的分离物的官能团耐受性羟基腈的分离收率和选择性也很差,令人失望。分离物进一步用产生极佳收率和ee(> 99%(S)–异构体,收率50%)的α-氨基腈苯基甘氨腈生成酸进行评估。用该底物进行的一系列pH研究表明,pH 7是避免产物和底物降解的最佳pH。