4-Arylpiperidine is an important structural element in anumber of biologically active compounds, possibly dueto the similarity to aryl alkylamine pharmacophorecommon to neurotransmitters like serotonin [5-hydroxytryptamine (5-HT)], dopamine (DA), noradrenaline(NA) and to antagonists of opiate receptors. Drugs thatmodulate the physiological and pathophysiologicalactions of 5-HT are useful or potentially useful in thetreatment of a variety of human diseases, includingdepression, anxiety, alcoholism, chronic pain, emesisand eating disorders such as obesity and bulimia.1 Suchcompounds can be exemplified by the antipsychotic5-HT- and DA-antagonists, haloperidol,2 the analgesicopioid agonist, meperidine,3 and the selective serotoninreuptake inhibitor (SSRI), paroxetine
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