Synthesis of 1,3,4-oxadiazole derivatives with anticonvulsant activity and their binding to the GABAA receptor
作者:Shiben Wang、Hui Liu、Xuekun Wang、Kang Lei、Guangyong Li、Jun Li、Renmin Liu、Zheshan Quan
DOI:10.1016/j.ejmech.2020.112672
日期:2020.11
4-dihydroquinolin-2(1H)-one (5b) showed the best anticonvulsant activity (MES, ED50 = 8.9 mg/kg; scPTZ, ED50 = 10.2 mg/kg), which was greater than the activities of carbamazepine and ethosuximide. Compound 5b exhibited the most potent binding affinity toward the GABAA receptor (IC50 = 0.11 μM) in the in vitro binding experiments. Compound 5b displayed significant anxiolytic activity at a low dose (1 mg/kg) in the elevated
在这项研究中,设计了一系列1,3,4-恶二唑衍生物(5a-s,10a-s和16a-d),并使用最大电击(MES)模型和皮下戊四氮(sc PTZ)模型进行了合成,以进行测试目标化合物在体内的抗惊厥活性。使用旋转棒(ROT)方法测量目标化合物的神经毒性(NT)。选择了具有潜在活性的七种化合物来测试50%有效剂量(ED 50)和50%有毒剂量(TD 50)。药理实验表明,6-((5-(戊硫基)-1,3,4-恶二唑-2-基)甲氧基)-3,4-二氢喹啉-2(1 H)-一(5b)表现出最佳的抗惊厥活性(MES,ED 50 = 8.9 mg / kg; sc PTZ,ED 50 = 10.2 mg / kg),大于卡马西平和乙磺酰亚胺的活性。在体外结合实验中,化合物5b对GABA A受体表现出最强的结合亲和力(IC 50 = 0.11μM)。在高架迷宫(EPM)测试中,化合物5b在低剂量(1 mg