SUBSTITUTED SPIROCYCLIC PIPERIDINE DERIVATIVES AS HISTAMINE-3 (H3) RECEPTOR LIGANDS

The present invention is directed to methods of treating disorders mediated by Histamine H3 receptors by administering novel substituted spirocyclic piperidine derivatives according to Formula (I). In particular, the substituted spirocyclic piperidine derivatives may be effective in the treatment of diseases or disease states, including narcolepsy or sleep/wake disorders, feeding behavior disorders, eating disorders, obesity, cognition disorders, arousal disorders, memory disorders, mood disorders, mood attention alteration, attention deficit hyperactivity disorder (ADHD), Alzheimer's disease/dementia, schizophrenia, pain, stress, migraine, motion sickness, depression, psychiatric disorders, epilepsy, gastrointestinal disorders, respiratory disorders, inflammation, and myocardial infarction.