US7977488 — 1-heterocyclylsulfonyl, 2-aminomethyl, 5-(hetero-) aryl substituted 1-H-pyrrole derivatives as acid secretion inhibitors

USPTO Abstract

The present invention provides a compound having a superior acid secretion inhibitory effect and showing an antiulcer activity and the like. The present invention provides a compound represented by the formula (I) wherein R 1 is a nitrogen-containing monocyclic heterocyclic group optionally condensed with a benzene ring or a heterocycle, the nitrogen-containing monocyclic heterocyclic group optionally condensed with a benzene ring or a heterocycle optionally has substituent(s), R 2 is an optionally substituted C 6-14 aryl group, an optionally substituted thienyl group or an optionally substituted pyridyl group, R 3 and R 4 are each a hydrogen atom, or one of R 3 and R 4 is a hydrogen atom and the other is an optionally substituted lower alkyl group, an acyl group, a halogen atom, a cyano group or a nitro group, and R 5 is an alkyl group or a salt thereof.