In this investigation, eight novel 2,5-disubstituted [1,2,4]-triazolo[1,5-a]pyrimidin-7(4H)-one and eight novel 2,5-disubstituted [1,2,4]-triazolo[1,5-a]pyrimidine amine derivatives were synthesized based on the novel marine natural product Essramycin. Their anti-epileptic activities were evaluated by 4-aminopyridine (4-AP)-induced hyper excitability model in primary cultured neocortical neurons. Five compounds with [1,2,4]-triazolo[1,5-a]pyrimidin-7(4H)-one skeleton showed remarkable anti-epileptic activities. The preliminary structure–activity relationship (SAR) showed that the pyrimidine-7(4H)-one motif is the necessary “active core” of anti-epileptic activity. To understand the action mechanism of anti-epileptic activity of [1,2,4]-triazolo[1,5-a]pyrimidin-7(4H)-one compounds, docking studies using the model of GABA_A as docking scaffolds were performed and the docking results were in concordance with the experiment observations.

在这项研究中，八个新颖的2,5-二取代的[1,2,4]-三唑并[1,5-a]嘧啶-7（4H）-一个和八个新颖的2,5-二取代的[1,2,4] -三唑并[1,5-a]嘧啶胺衍生物是基于新型海洋天然产物埃斯霉素合成的。通过4-氨基吡啶（4-AP）诱导的原代培养的新皮层神经元的高兴奋性模型评估了它们的抗癫痫活性。具有[1,2,4]-三唑并[1,5-a]嘧啶-7（4H）-一个骨架的五种化合物表现出显着的抗癫痫活性。初步的结构-活性关系（SAR）表明，嘧啶7（4H）-一个基序是抗癫痫活性的必要“活性核心”。要了解[1,2,4]-三唑并[1,5-a]嘧啶-7（4H）-one化合物抗癫痫活性的作用机理，使用GABA _A模型进行对接研究 进行对接脚手架，对接结果与实验观察一致。