A compound represented by the formula (I):
or a pharmacologically acceptable salt thereof, wherein Ar
1
represents an imidazolyl group or the like which may be substituted with a C1-6 alkyl group, Ar
2
represents a phenyl group or the like which may be substituted with a C1-6 alkoxy group, X
1
represents a double bond or the like and Het represents a triazolyl group or the like which may be substituted with a C1-6 alkyl group or the like, is effective as a therapeutic or prophylactic agent for a disease caused by Aβ.
一种由
化学式(I)表示的化合物或其药理学可接受的盐,其中Ar1代表可用C1-6烷基基团取代的
咪唑基团或类似基团,Ar2代表可用C1-6烷
氧基团取代的
苯基团或类似基团,X1代表双键或类似基团,Het代表可用C1-6烷基基团或类似基团取代的三唑基团或类似基团,对由Aβ引起的疾病具有治疗或预防作用。