Abstract Three imidazo [1, 2-a] pyridine-3-nitrosated (L-1, L-2, L-3) and a 3-formyl imidazo [1, 2-a] pyridine thiosemicarbazone (L-4) were synthesized and evaluated for their effects in the elevated plus maze, burying behavior test, rotarod performance, the horizontal wire test, and locomotor activity. L-2 and L-3 increased the percent time spent in the open arms of the plus maze at doses of 1 and 2 mg/kg without modifying the number of total entries. In ...