Anticonvulsant and toxicity evaluation of some 7-alkoxy-4,5-dihydro-[1,2,4]triazolo[4,3-a]quinoline-1(2H)-ones
作者:Hong-Guang Jin、Xian-Yu Sun、Kyu-Yun Chai、Hu-Ri Piao、Zhe-Shan Quan
DOI:10.1016/j.bmc.2006.06.044
日期:2006.10
To further investigate anticonvulsant activity of quinoline derivatives, a series of 7-alkoxy-4,5-dihydro-[1,2,4]triazolo[4,3-a]quinoline-1(2H)-one derivatives was synthesized starting from 7-hydroxyl-3,4-dihydro-2(1H)-quinoline. In initial (phase I) screening and quantitative (phase II) evaluation, compound 7-benzyloxyl-4,5-dihydro-[1,2,4]thiazolo[4,3-a]quinoline-1(2H)-one (3f) was among the most
为了进一步研究喹啉衍生物的抗惊厥活性,从起始位置合成了一系列7-烷氧基-4,5-二氢-[1,2,4]三唑并[4,3-a]喹啉-1(2H)-衍生物7-羟基-3,4-二氢-2(1H)-喹啉。在初始(阶段I)筛选和定量(阶段II)评估中,化合物7-苄氧基-4,5-二氢-[1,2,4]噻唑洛[4,3-a]喹啉-1(2H)-( 3f)是最活跃的,但毒性也最低。在抗MES效能测试中,中位有效剂量(ED(50))为12.3 mg / kg,中位毒性剂量(TD(50))为547.5 mg / kg,保护指数(PI)为44.5,它比原型药物苯妥英钠,苯巴比妥,卡马西平和丙戊酸盐的PI值大得多。选择化合物3f作进一步评估。在III期药理测试中,该化合物的中位催眠剂量(HD(50))和中位致死剂量(LD(50))分别为1204 mg / kg和> 3000 mg / kg,因此,与原型药物相比,其安全性更高。在