Several Block-l-Glu(OEt)-OEt (Block = amides, carbamates and trityl group) have been subjected to an aminolysis reaction catalyzed by the lipase B of Candida antarctica. The reaction took place in a regioselective manner and α-monoamides were obtained in all cases (except the bulky trityl group that did not react). Besides the synthetic value of the method, the results may empirically point out to some features
几种嵌段-1-谷
氨酸(OEt)-OEt(嵌段=酰胺,
氨基甲酸酯和三苯甲基)已经经历了由南极假丝酵母的
脂肪酶B催化的
氨解反应。该反应以区域选择性的方式进行,并且在所有情况下均获得α-单酰胺(除了未反应的庞大的三苯甲基)。除了该方法的综合价值外,该结果还可以根据经验指出酶活性位点的某些特征,因为反应速率受保护基团的体积和电子特性的严重影响。