Discovery of [1,2,4]-triazolo [1,5-a]pyrimidine-7(4H)-one derivatives as positive modulators of GABAA1 receptor with potent anticonvulsant activity and low toxicity
作者:Longjiang Huang、Jing Ding、Min Li、Zhipeng Hou、Yanru Geng、Xiufen Li、Haibo Yu
DOI:10.1016/j.ejmech.2019.111824
日期:2020.1
antiepileptic drugs, a series of 2,5-disubstituted [1,2,4]-triazolo[1,5-a]pyrimidine-7(4H)-one derivatives were designed and synthesized. Spontaneous Ca2+ oscillations (SCOs) of cortical neurons were used for in vitro phenotypic screening. Maximal electroshock test (MES) and pentylenetetrazole (PTZ) test were used to access their anticonvulsant activity, and rotarod test was used to estimate their neurotoxicity
为了寻找更有效,更安全的抗癫痫药,设计并合成了一系列2,5-二取代的[1,2,4]-三唑并[1,5-a]嘧啶-7(4H)-one衍生物。皮层神经元的自发Ca 2+振荡(SCO)用于体外表型筛选。使用最大电击试验(MES)和戊四唑(PTZ)试验来获得其抗惊厥活性,并使用rotarod试验评估其神经毒性。体外模型中的活性化合物在戊四氮(PTZ)诱发的癫痫模型中特别有效,但在最大电击(MES)模型中无效,与常用药物相比,更重要的是具有较低的神经毒性。其中,化合物5c和5e在PTZ诱发的癫痫模型中显示出显着的抗惊厥活性,ED50值分别为31.81 mg / kg和40.95 mg / kg,分别。这些化合物具有改善的神经毒性,其保护指数(PI = TD50 / ED50)值分别为17.22和9.09。最后,我们证明了化合物5c和5e主要作为正调节剂作用于GABAA受体,但没有钠通道。因此,本研究为癫痫的进一步研究提供了潜在的候选者。