Series of N-alkylated derivatives of trans-octahydrobenzo [g] quinoline and of cis-and trans- octahydrobenzo [flquinoline were prepared for pharmacological testing as congeners of 2- amino-5, 7-dihydroxytetralin, which elicits dopaminergic effects in a variety of assays. Trans- fused compounds bearing N-ethyl or Nn-propyl displayed high potency/activity in inhibition of effect of stimulation of the cat cardioaccelerator nerve. Certain N-alkyl homologues in ...