Journal
EUROPEAN JOURNAL OF MEDICINAL CHEMISTRY
Volume 45, Issue 1, Pages 149-159Publisher
ELSEVIER FRANCE-EDITIONS SCIENTIFIQUES MEDICALES ELSEVIER
DOI: 10.1016/j.ejmech.2009.09.037
Keywords
Aminobenzothiazole; Prop-2-eneamide; Pyrazoline; Anticonvulsant activity; 3D-QSAR
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A series of 6-substituted-[3-substituted-prop-2-eneamido]benzothiazole 9-32 and 6-substituted-2[(1-acetyl-5-substituted)-2-pyrazolin-3-yl]aminobenzothiazole 33-56 were synthesized using appropriate synthetic route and evaluated experimentally against maximal electroshock test. Selected compounds were evaluated for neurotoxicity, hepatotoxicity and behavioral study. The most active compound, 6-methyl-2-[(1-acetyl-5-(4-chlorophenyl))-2-pyrazolin-3-yl]aminobenzothiazole 52 exhibited an ED50 of 25.49 mu mol/kg, TD50 of 123.87 mu mol/kg and high protective index (PI) of 4.86 compared to standard drug phenytoin. The 3D-QSAR analysis was carried out by PHASE program and a statistically reliable model with good predictive power (r(2) = 0.9220, q(2) = 0.8144) was achieved. The 3D-QSAR plots illustrated insights into the structure activity relationship of these compounds which may aids in the design of potent aminobenzothiazole derivatives as anticonvulsant agents. (C) 2009 Elsevier Masson SAS. All rights reserved.
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