Design, Synthesis, and X-ray Crystal Structure of a Potent Dual Inhibitor of Thymidylate Synthase and Dihydrofolate Reductase as an Antitumor Agent
作者:Aleem Gangjee、Jianming Yu、John J. McGuire、Vivian Cody、Nikolai Galitsky、Roy L. Kisliuk、Sherry F. Queener
DOI:10.1021/jm000200l
日期:2000.10.1
showed that the pyrrolo[2, 3-d]pyrimidine ring binds in a "2,4-diamino mode" in which the pyrrole nitrogen mimics the 4-amino moiety of 2,4-diaminopyrimidines. This is the first example of a classical pyrrolo[2,3-d]pyrimidine antifolate shown to have this alternate mode of binding to DHFR. Compounds 3a and 3b were more inhibitory than LY231514 against TS from Lactobacillus casei and Escherichia coli
设计并合成了一种新型的N-¿2-氨基-4-甲基[(吡咯并[2,3-d]嘧啶-5-基)乙基]苯甲酰基-L-谷氨酸(3a)作为强效的双重抑制剂胸苷酸合酶(TS)和二氢叶酸还原酶(DHFR)用作抗肿瘤剂。还合成了化合物3b,即3a的N7-苄基类似物,作为抗肿瘤剂。3a的合成通过12个步骤完成,该步骤涉及从2个乙酰基丁内酯分5个步骤合成2-氨基-4-甲基吡咯并[2,3-d]嘧啶(10)。保护10的2-氨基并在5-位上进行区域选择性碘化,然后进行钯催化的偶联,得到中间体14,其通过还原和皂化转化为3a。类似的合成方法用于3b。3a,DHFR,NADPH和NADPH表明吡咯并[2,3-d]嘧啶环以“ 2,4-二氨基模式”结合,其中吡咯氮模拟2,4-二氨基嘧啶的4-氨基部分。这是经典的吡咯并[2,3-d]嘧啶类抗叶酸药物的第一个例子,显示其具有与DHFR的这种替代结合方式。与LY231514相比,化合物