Design, synthesis and biological evaluation of 2,4-diamino-6-methyl-5-substitutedpyrrolo[2,3-<i>d</i>]pyrimidines as dihydrofolate reductase inhibitors
作者:Aleem Gangjee、Hiteshkumar D. Jain、Sherry F. Queener
DOI:10.1002/jhet.5570420418
日期:2005.5
4-diamino-6-methyl-5-mioarylsubstituted-7H-pyrrolo[2,3-d]pyrimidines 2-10 were synthesized as potential inhibitors of dihydrofolate reductase and as antitumor agents. The analogues contain various electron donating and electron withdrawing substituents on the phenylsulfanyl ring of the side chains and were synthesized from the key intermediate 2,6-diamino-6-methyl-7H-pyrrolo[2,3-d]-pyrimidine, 14. Compound 14, was
合成了九个新颖的非经典的2,4-二氨基-6-甲基-5-亚甲基芳基取代的7 H-吡咯并[2,3- d ]嘧啶2-10作为二氢叶酸还原酶的潜在抑制剂和抗肿瘤剂。这些类似物在侧链的苯硫基环上包含多个给电子和吸电子取代基,由关键的中间体2,6-二氨基-6-甲基-7 H-吡咯并[2,3- d ]-嘧啶合成,14。通过氯化2-氨基-6-甲基吡咯并[2,3 - d ]嘧啶-4(3 H)-one,16的4-位反过来获得化合物14然后用氨置换。通过使用碘,乙醇和水的氧化加成反应,将适当取代的苯硫醇附加到14 的5位上。评估了该化合物对大鼠肝脏,大鼠衍生的肺孢子虫,鸟分枝杆菌和弓形虫二氢叶酸还原酶的抵抗力。最有效和选择性最高的抑制剂(2)具有1-萘基侧链。在这一系列化合物中,侧链上的吸电子取代基和大体积取代基提供了少量的活性二氢叶酸还原酶抑制剂。这些化合物侧链中的单原子硫桥不利于有效的二氢叶酸还原酶抑制作用。