| abstract |
The present invention provides a compound useful for the prevention or treatment of hyperphosphatemia or diseases associated with hyperphosphatemia or a pharmacologically acceptable salt thereof. A compound having the general formula (I) or a pharmacologically acceptable salt thereof. [Wherein, R 1 represents —OH or —SH, R 2 represents a halogen group, a C 1-6 alkyl group, a halogeno C 1-6 alkyl group, a C 1-6 alkoxy group, a halogeno C 1-6 alkoxy group, R 3 : may be substituted with a group selected from a specific substituent group, such as a cyano group, a nitro group, or a phenyl group optionally substituted with a group selected from a specific substituent group. Represents a good C1-6 alkyl group] [Selection figure] None |