Substrate Profiling of the Cobalt Nitrile Hydratase from Rhodococcus rhodochrous ATCC BAA 870
作者:Adelaide R. Mashweu、Varsha P. Chhiba-Govindjee、Moira L. Bode、Dean Brady
DOI:10.3390/molecules25010238
日期:——
cross-coupling reactions and imidazo[1,2-a]pyridines prepared by the Groebke–Blackburn–Bienaymé multicomponent reaction. The enzyme active site was moderately accommodating, accepting almost all of the small aromatic nitriles, the diarylpyridines and most of the bi-aryl compounds and Morita–Baylis–Hillman products but not the Groebke–Blackburn–Bienaymé products. Nitrile conversion was influenced by steric
对来自玫瑰色红球菌 ATCC BAA 870 的钴腈水合酶的芳香底物特征进行了评估,并针对多种含腈化合物 (>60)。为了确定这种酶的底物限度,评估了大小从小 (90 Da) 到大 (325 Da) 的化合物。较大的化合物包括通过 Suzuki 偶联反应制备的具有双芳基轴的化合物、Morita-Baylis-Hillman 加合物、通过 Buchwald-Hartwig 交叉偶联反应制备的杂原子连接的二芳基吡啶和通过制备的咪唑并 [1,2-a] 吡啶Groebke-Blackburn-Bienaymé 多组分反应。酶活性位点适中,接受几乎所有的小芳香腈,二芳基吡啶和大多数双芳基化合物和 Morita-Baylis-Hillman 产品,但不是 Groebke-Blackburn-Bienaymé 产品。腈的转化率受氰基周围的空间位阻、芳环上给电子基团(例如甲氧基)的存在以及化合物的整体大小的影响。