Studies on Anti-inflammatory Agents. IV. Synthesis and Pharmacological Properties of 1,5-Diarylpyrazoles and Related Derivatives.
作者:Kiyoshi TSUJI、Katsuya NAKAMURA、Nobukiyo KONISHI、Takashi TOJO、Takehiro OCHI、Hachiro SENOH、Masaaki MATSUO
DOI:10.1248/cpb.45.987
日期:——
A series of novel 1,5-diarylpyrazole derivatives was synthesized and tested for anti-inflammatory and analgesic activities to develop anti-inflammatory agents with fewer side effects than existing nonsteroidal anti-inflammatory drugs. The structure-activity relationships in this series were extensively studied. Electron-withdrawing substituents such as CN and CF3 were optimal at the 3-position of the
合成了一系列新颖的1,5-二芳基吡唑衍生物,并测试了其抗炎和镇痛活性,以开发出比现有非甾体类抗炎药副作用少的抗炎药。对该系列中的构效关系进行了广泛的研究。吸电子取代基(如CN和CF3)在吡唑环的3位位置最佳。用大的取代基取代这些取代基得到的活性化合物较少。4-(甲基磺酰基)苯基似乎是吡唑环5-位的最佳基团。最有效的化合物是1-(4-氟苯基)-5- [4-(甲基磺酰基)苯基]-吡唑-3-甲腈(19a),口服佐剂诱发的关节炎时的ED50值为0.030和0.47 mg / kg。胶原蛋白诱发的关节炎,ED30值为7。酵母诱导的痛觉过敏(Randall-Selitto)分析中为4 mg / kg。化合物19a还显示出有效的诱导性环氧合酶(COX-2)抑制活性(IC50 = 0.24 microM),即使在100 microM时也没有COX-1抑制作用。