A New Class of Anticonvulsants Possessing 6 Hz Psychomotor Seizure Test Activity: 2-(1H-Benzotriazol-1-yl)-N'-[Substituted] Acetohydrazides
作者:Praveen Kumar、Laxmi Tripathi
DOI:10.2174/157340612800786606
日期:2012.5.1
A series of 2-(1H-Benzotriazol-1-yl)-N'-[substituted]acetohydrazides were designed & synthesized keeping in view the structural requirement of pharmacophore and evaluated for anticonvulsant activity and neurotoxicity. The new compounds were characterized using FT-IR, 1H NMR, mass spectral data and elemental analysis. The anticonvulsant activity of the titled compounds was assessed using the 6 Hz psychomotor seizure test. The neurotoxicity was assessed using the rotorod method. The most active compound of the series was N'-[4-(1,3-Benzodioxol-5-yloxy)benzylidene]-2-(1H-benzotriazol-1-yl)acetohydrazide (BTA 9), which showed good activity with 75 % protection (3/4, 0.5 h) at a dose of 100 mg/kg in mice. All the compounds exhibited no neurotoxicity. A computational study was carried out for calculation of pharmacophore pattern and prediction of pharmacokinetic properties. Titled compounds have also exhibited good binding properties with epilepsy molecular targets such as glutamate, GABA (A) delta, GABA (A) alpha-1 receptors and Na/H exchanger, in Lamarckian genetic algorithm based flexible docking studies.
设计并合成了一系列2-(1H-苯并三唑-1-基)-N'-[取代]乙酰肼,考虑了药效团的结构要求,并评估了它们的抗惊厥活性和神经毒性。这些新化合物通过FT-IR、1H NMR、质谱数据和元素分析进行了表征。评估了标题化合物的抗惊厥活性,采用6 Hz心理运动性癫痫发作测试。使用旋转棒方法评估神经毒性。该系列中最活跃的化合物是N'-[4-(1,3-苯并二噁烷-5-基氧)苄叉]-2-(1H-苯并三唑-1-基)乙酰肼(BTA 9),在小鼠中以100 mg/kg剂量显示出良好的活性,保护率为75%(3/4,0.5小时)。所有化合物均未显示神经毒性。进行了计算研究,以计算药效团模式并预测药动学性质。在基于拉马克遗传算法的柔性对接研究中,标题化合物还显示出与癫痫分子靶标(如谷氨酸、GABA(A) delta、GABA(A) alpha-1受体和Na/H交换器)的良好结合特性。