The invention relates to pyridazinoquinoline compounds of the formulas B and B′
wherein Ring A is selected from an ortho fused aromatic or heteroaromatic five- or six-membered ring and R1, R3 and R4 are substituents selected from halo, OH, OCF3, NO2, CN, NR′R″, SO2NR′R″, SOmR′alkyl, and a variety of alkyl, aryl, heterocyclic and heteroaryl groups, to pharmaceutical compositions containing them and to methods utilizing them for the treatment of neurological disorders.