Synthesis and Biological Evaluation of 2,4-Diamino-6-(arylaminomethyl)pyrido[2,3-<i>d</i>]pyrimidines as Inhibitors of <i>Pneumocystis </i><i>c</i><i>arinii </i>and <i>Toxoplasma </i><i>g</i><i>ondii </i>Dihydrofolate Reductase and as Antiopportunistic Infection and Antitumor Agents
作者:Aleem Gangjee、Ona O. Adair、Sherry F. Queener
DOI:10.1021/jm030312n
日期:2003.11.1
A series of 2,4-diamino-6-(arylaminomethyl)pyrido[2,3-d]pyrimidines were synthesized and evaluated as inhibitors of Pneumocystis carinii (pc), Toxoplasma gondii (tg), and rat liver (rl) dihydrofolate reductase (DHFR) and as inhibitors of the growth of tumor cell lines in culture. Compounds 4-15 were designed as part of a continuing effort to examine the effects of substitutions at the 5-position, in
合成了一系列的2,4-二氨基-6-(芳基氨基甲基)吡啶并[2,3-d]嘧啶,并将其评估为卡氏肺孢子虫(pc),弓形虫(tg)和大鼠肝脏(rl)二氢叶酸还原酶的抑制剂(DHFR)并作为培养物中肿瘤细胞系生长的抑制剂。设计化合物4-15是继续努力的一部分,以研究在5位,双原子桥和侧链苯环中的取代对2,4-的结构-活性/选择性关系的影响二氨基吡啶并[2,3-d]嘧啶类抗多种DHFR。普通中间体2,4-二氨基吡啶并[2,3-d]嘧啶-6-腈16用适当的苯胺还原胺化,得到目标化合物4-12。亲核取代或还原性甲基化得到N10-甲基目标化合物13-15。如预期的那样 一般而言,与先前报道的相应的2,4-二氨基-5-甲基类似物相比,化合物4-15对所有三种DHFR的效力均较低。但是,与pcDHFR和tgDHFR相比,针对rlDHFR的效力下降幅度更大,导致对来自不同病原体的致病性DHFR具有明显的选择性。