Patent ID: 8822699

Claim:
A method of inhibiting amyloid β production in a mammal, comprising administering an effective amount of a compound represented by the formula (I): wherein: ring A is an optionally substituted oxazole ring, ring B is an optionally substituted benzene ring, and partial structure (1): wherein R 1 and R 2 are the same or different and each is a substituent, L is a bond, —Y—, —O—, —YO—, —OY—, —S—, —SO—, —SO 2 —, —CONR a —, —NR a CO—, —NR a —, —YNR a —, —NR a Y—, —YCONR a —, —NR a COY—, —OCONR a —, —NR a COO— or —NR b CONR a —, wherein Y is an optionally substituted C 1-6 alkylene group, R a is a hydrogen atom or an optionally substituted C 1-6 alkyl group, R b is a hydrogen atom or an optionally substituted C 1-6 alkyl group, R 3 is a substituent, and n is an integer of 0-6, or a salt thereof, to the mammal.