Histamine h3 receptor agents, formulations and therapeutic uses

The present invention discloses a process for preparing the histamine H3 receptor antagonist or novel compounds represented by formula I having the inverse antagonist activity or a pharmaceutically acceptable salt thereof and such compounds. In another embodiment, the present invention includes a pharmaceutical composition comprising a compound of formula I, using this pharmaceutical composition, obesity, cognitive disorders, narcolepsy, and other diseases related to the histamine H3 receptor It discloses a method of treatment. (I)