Takeda Pharmaceutical Company Limited

Keizo Hirase

Yasuyoshi Arikawa

Haruyuki Nishida

Koji Ono

Masahiro Kajino

The present invention provides a compound having a superior acid secretion inhibitory effect and showing an antiulcer activity, which is represented by the formula (I) wherein Ris an optionally substituted cyclic group, Ris a substituent, Ris an optionally substituted alkyl group, an acyl group, an optionally substituted hydroxy group, an optionally substituted amino group, a halogen atom, a cyano group or a nitro group, Rand Rare each a hydrogen atom, an optionally substituted alkyl group, an acyl group, an optionally substituted hydroxy group, an optionally substituted amino group, a halogen atom, a cyano group or a nitro group, Rand Rare each a hydrogen atom or an alkyl group, and n is an integer of 0-3, or a salt thereof.

Pyrrole compounds

Provided is a compound having a superior acid secretion suppressive action, which shows an antiulcer activity and the like. A compound represented by the formula (I) or a salt thereof: 

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Osaka, Japan

Keizo Hirase