| 摘要 |
Disclosed is a compound having an excellent inhibitory activity on the secretion of an acid and exhibiting an anti-tumor activity and others. Specifically disclosed is a compound represented by formula (1) [wherein R represents a substituent; R represents a hydrogen atom, a C alkyl group which may have a halogen atom, or a cyano group; and R represents a hydrogen atom, a halogen atom, a cyano group, a C alkyl group which may have a halogen atom, or a C alkoxy group which may have a halogen atom; wherein one of R and R represents a hydrogen atom and the other represents a substituent other than a hydrogen atom] or a salt thereof. |
