abstract |
[Problem] To provide a medicine having excellent acid secretion inhibitory action and used for eradication of Helicobacter pylori. A medicament for eradication of Helicobacter pylori comprising a compound represented by formula (I) or a salt thereof. [Wherein, R 1 represents a monocyclic nitrogen-containing heterocyclic group which may be condensed with a benzene ring or a heterocyclic ring, and may be a monocyclic nitrogen-containing heterocyclic group which may be condensed with the benzene ring or the heterocyclic ring. The ring group may optionally have a substituent, and R 2 represents an optionally substituted C 6-14 aryl group, an optionally substituted thienyl group, or an optionally substituted pyridyl group. , R 3 and R 4 each represent a hydrogen atom, or one of R 3 and R 4 represents a hydrogen atom, and the other may be substituted lower alkyl group, acyl group, halogen atom, cyano group or nitro group Group, R 5 represents an alkyl group] [Selection figure] None |