Design and microwave-assisted synthesis of 5-trifluoromethyl-4,5-dihydro-1H-pyrazoles: Novel agents with analgesic and anti-inflammatory properties
作者:Patricia D. Sauzem、Pablo Machado、Maribel A. Rubin、Gabriela da S. Sant'Anna、Henrique B. Faber、Alessandra H. de Souza、Carlos F. Mello、Paulo Beck、Robert A. Burrow、Helio G. Bonacorso、Nilo Zanatta、Marcos A.P. Martins
DOI:10.1016/j.ejmech.2007.07.018
日期:2008.6
In this work, we reported the synthesis and evaluation of the analgesic and anti-inflammatory properties of novel 3- or 4-substituted 5-trifluoromethyl-5-hydroxy-4,5-dihydro-1H-1-carboxyamidepyrazoles (where 3-/4-substituent=H/H, Me/H, Et/H, Pr/H, i-Pr/H, Bu/H, t-Bu/H, Ph/H, 4-Br-Ph/H and H/Me) designed in the exploration of the bioisosteric replacement of benzene present in salicylamide with a 5-trifluoromethyl-4
在这项工作中,我们报告了新颖的3-或4-取代的5-三氟甲基-5-羟基-4,5-二氢-1H-1-羧酰胺吡唑类药物(其中3- / 4-取代基= H / H,Me / H,Et / H,Pr / H,i-Pr / H,Bu / H,t-Bu / H,Ph / H,4-Br-Ph / H和H / Me)设计用于探索用5-三氟甲基-4,5-二氢-1H-吡唑支架水杨酰胺中存在的苯的生物立体替代。通过微波辐射下的快速一锅反应,由4-烷氧基-1,1,1-三氟甲基-3-烯丙基-2-酮与氨基脲盐酸盐的环缩合反应合成目标化合物。除光谱数据外,化合物的结构还通过X射线衍射得到支持。皮下注射5-trifluoromethyl-4,5-二氢-1H-吡唑类药物在小鼠福尔马林测试的神经源性和炎症性阶段降低了疼痛相关的行为。此外,活性更强的镇痛化合物(3- / 4- = Et / H和H / Me)显着降低了角叉菜胶诱发的