Synthesis and Evaluation of the Anticonvulsant Activity of 5-alkylthio-4- phenyl-2,4-dihydro-3H-1,2,4-triazol-3-one Derivatives
作者:Yan Zheng、Xian-Qing Deng、Bing Shu、Shi-Ben Wang、Xu Cao、Zhe-Shan Quan
DOI:10.2174/1570180811310060011
日期:2013.5.1
A new series of 5-alkylthio-4-phenyl-2,4-dihydro-3H-1,2,4-triazol-3-one derivatives (4a-w) have been synthesized
and tested for their anticonvulsant activity using the maximal electroshock (MES) test. The results indicated that all
of the target compounds exhibited anticonvulsant activity in the MES test. Of the compounds tested, compound 4g
showed the most potent level of activity with an ED50 value of 38.7 mg/kg, a TD50 value of 633.7 mg/kg, and a superior
protective index (PI) value of 16.4, revealing the greater margin of safety of compound 4g versus the standard drug carbamazepine
(PI = 6.5). In addition, the potency of compound 4g against seizures induced by pentylenetetrazole in the
chemical-induced seizure test was also established.
我们合成了一系列新的 5-烷硫基-4-苯基-2,4-二氢-3H-1,2,4-三唑-3-酮衍生物(4a-w),并利用最大电击(MES)试验测试了它们的抗惊厥活性。结果表明,所有目标化合物在 MES 试验中都表现出抗惊厥活性。在测试的化合物中,化合物 4g 的活性最强,其 ED50 值为 38.7 毫克/千克,TD50 值为 633.7 毫克/千克,保护指数(PI)为 16.4,显示化合物 4g 与标准药物卡马西平(PI = 6.5)相比具有更大的安全系数。此外,在化学诱导癫痫发作试验中,化合物 4g 对戊烯四唑诱导的癫痫发作也有抑制作用。