Synthesis and Structure-Activity Relationship Studies of Pyrazole-based Heterocycles as Antitumor Agents
作者:Ahmad M. Farag、Abdelrahman S. Mayhoub、Taha M. A. Eldebss、Abdel-Galil E. Amr、Korany A. K. Ali、Naglaa A. Abdel-Hafez、Mohamed M. Abdulla
DOI:10.1002/ardp.200900176
日期:——
Several 4‐cyano‐1,5‐diphenylpyrazoles attached to different heterocyclic ring systems at position 3 were synthesized starting from ethyl 4‐cyano‐1,5‐diphenyl‐1H‐pyrazole‐3‐carboxylate 1. The newly synthesized compounds were tested in vivo for their anti‐estrogenic effects and evaluated in vitro for their cytotoxic properties against estrogen‐dependent tumors. 3‐(5‐Mercapto‐1,3,4‐oxadiazole‐2‐yl)‐1
以 4-氰基-1,5-二苯基-1H-吡唑-3-羧酸乙酯 1 为起始原料,合成了几种连接在 3 位不同杂环系统上的 4-氰基-1,5-二苯基吡唑。体内的抗雌激素作用,并在体外评估了它们对雌激素依赖性肿瘤的细胞毒性。3- (5- Mercapto - 1,3,4- oxadiazole - 2-yl) -1,5- diphenyl - 1H - pyrazole - 4-carbonitrile 13 显示出最高的细胞毒活性,对 IGROVI 的 GI50 值等于 40 nM卵巢肿瘤细胞系。除了高耐受剂量外,它还显示出比参考药物有效 1.6 倍的抗雌激素活性。3-(5-(甲硫基)-4-苯基-4H-1,2,4-三唑-3-基)-1,5-二苯基-1H-吡唑-4-甲腈7被发现具有最高的抗雌激素活性,而 1,5-二苯基-3-[5-(苯基氨基)-1,3,4-噻二唑-2-基]-1H-吡唑-4-甲腈11的活性最低。口服