Synthesis of 2,4-Diamino-6-(thioarylmethyl)pyrido[2,3- d ]pyrimidines as dihydrofolate reductase inhibitors
作者:Aleem Gangjee、Ona Adair、Sherry F. Queener
DOI:10.1016/s0968-0896(01)00223-1
日期:2001.11
Six 2,4-diaminopyrido[2,3-d]pyrimidines with a 6-methylthio bridge to an aryl group were synthesized and biologically evaluated as inhibitors of Pneumocystis carinii (pc) and Toxoplasma gondii (tg) dihydrofolate reductase (DHFR). The syntheses of analogues 3-8 were achieved by nucleophilic displacement of 2,4-diamino-6-bromomethylpyrido[2,3-d]pyrimidine 14 with various arylthiols. The alpha-naphthyl
合成了6个带有6-甲硫基芳基的2,4-二氨基吡啶并[2,3-d]嘧啶,并将其作为卡氏肺囊虫(pc)和弓形虫(tg)二氢叶酸还原酶(DHFR)的抑制剂进行生物学评估。类似物3-8的合成是通过用各种芳基硫醇亲核取代2,4-二氨基-6-溴甲基吡啶并[2,3-d]嘧啶14而实现的。α-萘类似物4与大鼠肝脏(rI)DHFR相比,对pcDHFR和tgDHFR的选择性最高,分别为3.6和8.7。β-萘类似物5在该系列中表现出最高的效能,相对于pcDHFR和tgDHFR的IC(50)值分别为0.17和0.09 microM。