Structure-Based Design and Synthesis of Lipophilic 2,4-Diamino-6-Substituted Quinazolines and Their Evaluation as Inhibitors of Dihydrofolate Reductases and Potential Antitumor Agents
作者:Aleem Gangjee、Anup P. Vidwans、Anil Vasudevan、Sherry F. Queener、Roy L. Kisliuk、Vivian Cody、Ruming Li、Nikolai Galitsky、Joe R. Luft、Walter Pangborn
DOI:10.1021/jm980081y
日期:1998.8.1
synthesized via a regiospecific reductive methylation of the corresponding N9-H precursors. The compounds were evaluated as inhibitors of DHFR from human, Pneumocystis carinii, T. gondii, rat liver, Lactobacillus casei, and Escherichia coli, and selected analogues were evaluated as inhibitors of the growth of tumor cells in culture. These analogues displayed potent T. gondii DHFR inhibition as well as
报道了14种6-取代的2,4-二氨基喹唑啉的合成和生物学活性。这些化合物旨在提高先前报道的2,4-二氨基-6-取代的吡啶并[2,3-d]嘧啶系列的细胞渗透性,该系列化合物对刚地弓形虫二氢叶酸还原酶(DHFR)表现出显着的效价和显着的选择性。 ,但对培养的弓形虫细胞生长的抑制作用要低得多。通过用2,4,6-三氨基喹唑啉对适当的苯甲醛进行区域特异性还原胺化反应,可获得目标N9-H类似物,后者又由2,4-二氨基-6-硝基喹唑啉合成。N9-CH3类似物是通过相应的N9-H前体的区域特异性还原甲基化合成的。这些化合物被评估为人类卡氏肺孢子虫(Pneumocystis carinii)的DHFR抑制剂,弓形虫,大鼠肝脏,干酪乳杆菌和大肠杆菌以及选定的类似物被评估为培养物中肿瘤细胞生长的抑制剂。这些类似物显示了有效的弓形虫DHFR抑制作用以及对培养物中弓形虫细胞生长的抑制作用。此外,在国家癌症研究所的体