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Letters in Drug Design & Discovery


ISSN (Print): 1570-1808
ISSN (Online): 1875-628X

Synthesis and Anticonvulsant Activity Evaluation of 4-butyl-5-(4- alkoxyphenyl)-2H-1,2,4-triazole-3(4H)-ones

Author(s): Zi-Shi Zhu, Shi-Ben Wang, Xian-Qing Deng, Da-Chuan Liu and Zhe-Shan Quan

Volume 11 , Issue 5 , 2014

Page: [628 - 635] Pages: 8

DOI: 10.2174/1570180810666131122003939

Price: $65


A series of 4-butyl-5-(4-alkoxyphenyl)-2H-1,2,4-triazole-3(4H)-ones (6a-6u) was designed and synthesized. The anticonvulsant effects and neurotoxicity of the compounds were evaluated with maximal electroshock test and rotarod test. Among the synthetic compounds, 4-butyl-5-(4-(2-fluorinebenzyl)phenyl)-2H-1,2,4-triazole-3 (4H)-one (6k) was the most potent with ED50 value of 27.4 mg/kg and protective index (PI = TD50/ED50) value of 12.0. Besides the anti-MES efficacy, the potency of compound 6k against seizures induced by pentylenetetrazole (PTZ), 3-mercaptopropionic acid (3- MP), and bicuculline (BIC) was also established, which suggested that the mechanisms of action including enhancing of GABAergic activity might be involved in its anticonvulsant activity.

Keywords: Anticonvulsant, GABA, Maximal electroshock test, Neurotoxicity, Synthesis, Triazolone.

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