A series of benztriazoles bearing Mannich bases (2-10) were synthesized from benztriazole by aminomethylation with formaldehyde and various substituted secondary amines. Titled compounds were synthesized by Mannich reaction and they were characterized by IR and ¹HNMR spectroscopy. All these Mannich bases were screened for hepatoprotective activity on carbon tetrachloride induced liver damage in rats. Only compounds 4 (250 mg/kg) ...