Synthesis of Classical and a Nonclassical 2-Amino-4-oxo-6-methyl-5-substituted Pyrrolo[2,3-<i>d</i>]pyrimidine Antifolate Inhibitors of Thymidylate Synthase
作者:Aleem Gangjee、Farahnaz Mavandadi、Roy L. Kisliuk、Sherry F. Queener
DOI:10.1021/jm980586o
日期:1999.6.1
Compounds 2-5 were designed as potential antifolate nonpolyglutamatable inhibitors of thymidylate synthase (TS). These analogues are structurally related to 2-amino-4-oxo-5-substituted quinazolines and 2-amino-4-oxo-5-substituted pyrrolo[2, 3-d]pyrimidines which have shown excellent inhibition of TS and, for the quinazoline, significant promise as clinically useful antitumor agents. Compounds 2-4 were
将化合物2-5设计为潜在的胸苷酸合酶(TS)的抗叶酸非多聚谷氨酸抑制剂。这些类似物在结构上与2-氨基-4-氧代-5-取代的喹唑啉和2-氨基-4-氧代5-取代的吡咯并[2,3-d]嘧啶有关,它们对TS表现出优异的抑制作用,并且对于喹唑啉作为临床上有用的抗肿瘤药物具有重大前景。通过在新戊酰基保护的5-二甲基氨基甲基取代的6-甲基吡咯并[2,3-d]嘧啶7上的适当的胺交换反应,合成了化合物2-4,而后者又是从吡咯烷基化的6-甲基吡咯并[3]的曼尼希反应中获得的。 2,2,3-d]嘧啶6.在胺交换反应缓慢的情况下,用甲基碘将曼尼希碱季铵化,从而提供了更快的交换反应,并提高了收率。对于化合物5 4-巯基吡啶用作亲核试剂并与7反应。类似物2-4抑制干酪乳杆菌(lc)TS和重组人(h)TS,IC50在10(-4)至10(-5)M范围内。化合物5在26和25 microM分别抑制lcTS和hTS 20%。