A comparison of the inhibitory action of 5-(substituted-benzyl)-2,4-diaminopyrimidines on dihydrofolate reductase from chicken liver with that from bovine liver
作者:Ren Li Li、Corwin Hansch、Bernard T. Kaufman
DOI:10.1021/jm00346a020
日期:1982.4
Forty-four 5-(substituted-benzyl)-2,4-diaminopyrimidines have been tested as inhibitors of chicken and bovine liver dihydrofolate reductase. The chicken enzyme is, on the average, about 10 times less easily inhibited than bovine enzyme. Substituents which show the greatest selectivity are 4-NHCOCH3, 3-OC4H9, 3-I, 3-CF3-4-OCH3, and 3,4,5-(OCH3)3. The inhibition constants have been used to formulate
已经测试了44种5-(取代的苄基)-2,4-二氨基嘧啶作为鸡和牛肝二氢叶酸还原酶的抑制剂。平均而言,鸡肉酶的抑制作用比牛酶低约10倍。显示最大选择性的取代基是4-NHCOCH3、3-OC4H9、3-I,3-CF3-4-OCH3和3,4,5-(OCH3)3。为了比较的目的,抑制常数已经被用来制定定量的构效关系。