Anticoccidial derivatives of 6-azauracil. 2. High potency and long plasma life of N1-phenyl structures
作者:Max W. Miller、Banavara L. Mylari、Harold L. Howes、John E. Lynch、Martin J. Lynch、Richard C. Koch
DOI:10.1021/jm00198a010
日期:1979.12
Attachment of substituted phenyl side chains at N1 of 6-azauracil caused striking increases in plasma life and anticoccidial potency. The increases were related in part to the acidity of the imide hydrogen. Maximum effects were shown by phenyl rings substituted in both meta positions by compact, electron-withdrawing, lipophilic substituents, as in 1-(3',5'-dichlorophenyl)-6-azauracil, which had plasma
在6-氮杂嘧啶的N1处连接取代的苯基侧链会显着增加血浆寿命和抗球虫效力。这种增加部分与酰亚胺氢的酸度有关。如在1-(3',5'-二氯苯基)-6-氮杂尿嘧啶中,苯环在两个间位均被致密的吸电子亲脂性取代基取代,其最大血浆半衰期为160 h,效力是6-氮杂嘧啶的250倍。