Synthesis and biological evaluation of isoxazolo[4,5-d]pyridazin-4-(5H)-one analogues as potent anti-inflammatory agents
作者:Keriman Özadalı、Fügen Özkanlı、Sarthak Jain、Praveen P.N. Rao、Carlos A. Velázquez-Martínez
DOI:10.1016/j.bmc.2012.03.021
日期:2012.5
interactions in both COX-2 and 5-LOX active sites. Furthermore, the dual acting COX-2/5-LOX compound 28 exhibited a superior gastrointestinal safety profile (ulcer index = 0.25) compared to the reference drug ibuprofen (UI = 7.0) when administered orally at the same molar dose. These observations suggest that isoxazolo[4,5-d]pyridazin-4(5H)-one analogs represent a new scaffold to design potent, effective
在这项研究中,合成了十八种新的具有1,3,4-噻二唑或1,2,4-三唑-5-硫酮部分的异恶唑并[4,5 - d ]哒嗪-4(5 H)-衍生物。并在体外(COX-1 / COX-2、5-LOX)和体内(大鼠爪水肿试验)进行抗炎活性测试。化合物15,16,25,26和28 - 30显示双COX-2(IC 50 “S在2.1-10.9μM范围),和5-LOX(IC 50的抑制活性在6.3–63.5μM范围内。当对大鼠口服时,双重COX-2 / 5-LOX抑制剂在体内显示出比参考药物布洛芬(18%)更高的体内抗炎活性(炎性反应降低30-45%)。在双重COX-2 / 5-LOX抑制剂中,最有效的化合物(28)通过抑制COX-2(IC 50 = 2.1μM)和5-LOX(IC 50 = 6.3μM)酶表现出最佳的抗炎作用。我们通过酶-配体分子建模(对接)研究了化合物28的结合相互作用,该研究显示