| abstract |
The present invention relates to a compound represented by formula (I) or a pharmacologically acceptable salt thereof and use thereof as a medicament.n n n (Formula 1)n n n n n n n n (In Formula (I), Ar 1 is An imidazolyl group which may be substituted with 1 to 3 substituents, and Ar 2 is X 1 is a pyridinyl group, a pyrimidinyl group or a phenyl group which may be substituted with 1 to 3 substituents. (1) -C≡C- or (2) can be substituted double bonds and the like, and R 1 and R 2 are C1-6 alkyl group, C3-8 cycloalkyl group, etc. may be substituted)n n n Amyloid beta, disease |