4-[aryl(piperidin-4-yl)] aminobenzamides are delta-opioid receptor agonists/antagonists of formula (I). As delta-opioid receptor agonists, such compounds are useful as analgesics. Depending on their agonist/antagonist effect, such compounds may also be useful immunosuppressants, antiinflammatory agents, agents for the treatment of mental illness, medicaments for drug and alcohol abuse, agents for treating gastritis and diarrhea, cardiovascular agents, and agents for the treatment of respiratory diseases. In formula (I), [Ar is phenyl, 1-naphthyl or 2-naphthyl, each optionally substituted with 1 to 3 R<7>; R<1> - R<8> are described in the application].
4-[ARYL(PIPERIDIN-4-YL)] AMINOBENZAMIDES WHICH BIND TO THE DELTA-OPIOID RECEPTOR