“…4 A large number of compounds bearing piperidine scaffold have entered into preclinical and clinical trials over the last few years. 5 In particular, 1,4-disubstituted piperidine scaffolds find useful applications as established drugs such as donepezil (Aricept ® , an acetylcholinesterase inhibitor in the treatment of Alzheimer's disease), naratriptan (Naramig ® , an agonist of 5-hydroxytryptamine (serotonin) receptor 1D and 5-hydroxytryptamine receptor 1B in the treatment of migraine headaches), risperidone (Risperdal ® ) and sertindole (Serdolect ® ) (both nonselective 5-hydroxytryptamine receptor 2A/dopamine D 2 receptor (5-HT/D 2 ) antagonists, currently in the treatment of schizophrenia), 6,7 and exhibit anti-hypertensive, 8 antibacterial, 9 antimalarial, 10 anticonvulsant, and anti-inflammatory activities. 11 Moreover, some of them have been found to possess enzyme inhibitory activity against farnesyl transferase (FTase is believed to play an important role in development of progeria and various forms of cancers) 10 or dihydroorotate dehydrogenase (DHODH) 5 and also found to be useful in Parkinson's disease involving the MAO-based mechanism.…”