Design and synthesis of 5-alkoxy-[1,2,4]triazolo[4,3-a]quinoline derivatives with anticonvulsant activity
作者:Li-Jun Guo、Cheng-Xi Wei、Jing-Hao Jia、Li-Ming Zhao、Zhe-Shan Quan
DOI:10.1016/j.ejmech.2008.07.010
日期:2009.3
5-alkoxy-[1,2,4]triazolo[4,3-a]quinoline derivatives were synthesized using 4-hydroxyquinolin-2(1H)-one as the starting material. Their anticonvulsant activities were evaluated by the maximal electroshock test (MES) and their neurotoxicities were measured by the rotarod test. The results of these tests demonstrated that 5-hexyloxy-[1,2,4]triazolo[4,3-a]quinoline (3f) was the most potent anticonvulsant, with
以4-羟基喹啉-2(1 H)-one为起始原料,合成了一系列5-烷氧基-[1,2,4]三唑并[4,3- a ]喹啉衍生物。通过最大电击试验(MES)评估其抗惊厥活性,并通过旋转脚踏试验(Rotarod test)测量其神经毒性。这些测试的结果表明,5-己氧基-[1,2,4]三唑并[4,3- a ]喹啉(3f)是最有效的抗惊厥药,中位有效剂量(ED 50)为19.0 mg / kg,MES测试中的保护指数(PI = TD 50 / ED 50)值为5.8。化合物5-苄氧基-[1,2,4]三唑并[4,3- a ]喹啉(3j),在22.8 mg / kg的剂量下控制MES试验诱发的癫痫发作时,其活性比化合物3f弱,但神经毒性较低,PI值为12.0,比市售的卡马西平更安全。为了解释抗惊厥活性的可能机理,在戊烯四唑试验,异烟肼试验,硫代氨基脲试验,3-巯基丙酸试验和苯丙氨酸试验中测试了化合物3j。