Design, synthesis and antiinflammatory activity of some 1,3,4-oxadiazole derivatives
作者:FA Omar、NM Mahfouz、MA Rahman
DOI:10.1016/0223-5234(96)83976-6
日期:1996.1
appropriate isothiocyanate derivatives. The structures of the synthesized compounds were confirmed by elemental as well as spectroscopic analyses. The antiinflammatory activity was investigated by determination of the inhibitory effects of the oxadiazole derivatives 19-34 on histamine-induced edema in rat abdomen. Compounds 19a, 21a, 23b, 28c and 32d proved to be more potent antiinflammatory agents at 200 mg/kg
合成了一系列取代的1,3,4-恶二唑衍生物19-34作为抗炎药。通过使用二环己基碳二亚胺DCC或I(2)/ NaOH对相应的硫代氨基甲酰氨基3-18进行环脱硫获得目标化合物。通过将羧酸1a-d转化为相应的酰肼2a-d,然后用适当的异硫氰酸酯衍生物处理,可以容易地获得中间体3-18。通过元素分析和光谱分析证实了合成化合物的结构。通过确定恶二唑衍生物19-34对组胺诱导的大鼠腹部水肿的抑制作用来研究其抗炎活性。口服200 mg / kg的化合物后,化合物19a,21a,23b,28c和32d被证明比布洛芬更有效,标准参比药物。在相同剂量水平下,其他化合物(例如20a,25b,27c,29c和33d)显示出显着的抗炎活性,但低于布洛芬。LD(50)值较高,从〜1000至1500 mg / kg,以及200 mg / kg po的较低的致溃疡性,反映出最有效的化合物的低毒性。此外,从小鼠对苯醌(P