Imidazopyridine compounds as 5-HT 4 receptor agonists

Drug – bio-affecting and body treating compositions – Designated organic active ingredient containing – Having -c- – wherein x is chalcogen – bonded directly to...

Reexamination Certificate

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C546S121000, C546S112000, C514S303000

Reexamination Certificate

active

07012080

ABSTRACT:
This invention provides a compound of the formula (I):or a pharmaceutically acceptable salt thereof, whereinR1represents a hydrogen atom or a halogen atom;R2represents a methyl group or an ethyl group;R3represents a branched alkyl group having from 3 to 6 carbon atoms or an alkyl group having from 3 to 6 carbon atoms substituted by an alkoxy group having from 1 to 6 carbon atoms;with the proviso that when the terminal carbon atom of said alkyl group of R3is substituted by said alkoxy group, said alkyl group is a branched alkyl group.These compounds have 5-HT4receptor binding activity, and thus are useful for the treatment of gastroesophageal reflux disease, non-ulcer dyspepsia, functional dyspepsia, irritable bowel syndrome or the like in mammalian, especially humans. This invention also provides a pharmaceutical composition comprising the above compound.

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