Synthesis and evaluation of anticonvulsant and antidepressant activities of 7-alkyl-7H-tetrazolo[1,5-g]purine derivatives
摘要:
Seventeen 7-alkyl-7H-tetrazolo[1,5-g]purine derivatives were synthesized, and their anticonvulsant and antidepressant activities were evaluated in a mouse model. The anticonvulsant effect and neurotoxicity of the compounds were evaluated with a maximal electroshock test and a rotated test in mice, respectively. Most of the compounds had anticonvulsant activity; among the compounds studied, 7-(3-chlorobenzyl)-7H-tetrazolo[1,5-g]purine (3h) was found to be the most potent compound with a median effective dose (ED50) value of 28.9 mg/kg and a protective index value of 15.8, possessing better anticonvulsant activity and higher safety than the marketed drug carbamazepine. To explain the possible mechanism of anticonvulsant activity, compound 3h was tested in pentylenetetrazole-induced seizures tests, and the results suggest that compound 3h exerts anticonvulsant activity through a GABA-mediated mechanism. Forced swimming test showed that at a dose of 40 mg/kg, five compounds have significant antidepressant activity, the most active compound was 7-(2-chlorobenzyl)-7H-tetrazolo[1,5-g]purine (3g), which decreased immobility time by 56 %.
Synthesis and anticonvulsant activity of novel purine derivatives
作者:Shi-Ben Wang、Peng Jin、Fu-Nan Li、Zhe-Shan Quan
DOI:10.1016/j.ejmech.2014.07.074
日期:2014.9
A series of new purines containing triazole and other heterocycle substituents was synthesized and evaluated for their preliminary anticonvulsant activity and neurotoxicity by using the maximal electroshock (MES), subcutaneous pentylenetetrazole (scPTZ) and rotarod neurotoxicity (TOX) tests. Among the compounds studied, 9-decyl-6-(1H-1,2,4-triazol-1-yl)-9H-purine (5e) was the most potent compound,
合成了一系列含有三唑和其他杂环取代基的新嘌呤,并通过最大电击(MES),皮下戊烯四唑(scPTZ)和轮状神经毒性(TOX)测试评估了它们的初步抗惊厥活性和神经毒性。在所研究的化合物中,9-癸基-6-(1 H -1,2,4-三唑-1-基)-9 H-嘌呤(5e)是最有效的化合物,中位有效剂量为23.4 mg /小鼠腹膜内给药后体重超过25.6千克,并且具有超过25.6的高保护指数。化合物5e对小鼠的MES诱发的癫痫发作表现出显着的口服活性,ED 50为39.4 mg / kg,PI高于31.6。这些结果证明了在MES,scPTZ和TOX模型中,5e具有更好的抗惊厥活性,并且比市售的卡马西平和丙戊酸盐更安全。
9-(2-Fluorobenzyl)-6-(alkylamino)-9H-purines. A new class of anticonvulsant agents
作者:James L. Kelley、Mark P. Krochmal、James A. Linn、Ed W. McLean、Francis E. Soroko
DOI:10.1021/jm00400a019
日期:1988.5
Several substituted aryl and 6-alkylamino analogues of the anticonvulsant purine 9-(2-fluorobenzyl)-6-(methyl-amino)-9H-purine (1) were synthesized and tested for anticonvulsantactivity against maximal electroshock-induced seizures (MES) in rats. Derivatives with a second fluoro substituent in the 5- or 6-position of the aryl moiety were very active with ip ED50's that ranged from 2 to 4 mg/kg. Congeners