Lometraline

Lometraline (INN; developmental code name CP-14,368) is a drug and an aminotetralin derivative. A structural modification of tricyclic neuroleptics, lometraline was originally patented by Pfizer as an antipsychotic, tranquilizer, and antiparkinsonian agent. However, it was instead later studied as a potential antidepressant and/or anxiolytic agent, though clinical studies revealed no psychoactivity at the doses used and further investigation was suspended. Further experimental modifications of the chemical structure of lometraline resulted in the discovery of tametraline, a potent inhibitor of the reuptake of dopamine and norepinephrine, which in turn led to the discovery of the now widely popular antidepressant sertraline, a selective serotonin reuptake inhibitor (SSRI).

The precursor ketone can undergo a Mannich reaction with pyrrolidine to yield CID:12348935. This specific agent had analgesic activity in the same range as morphine and was not antagonized by naloxone.