Patent Document ID: 20080103126
Application ID: 11957832
Patent Flag: 0

Claim One:
1. A pharmaceutical composition comprising the following ingredients (A) and (B): Ingredient (A): An alkyl ether derivative represented by the following formula: wherein R 1 is a benzothienyl or benzofuranyl group which may be substituted with a group selected from the group consisting of halogen atom, alkyl group optionally substituted with hydroxyl group, alkoxy group, carboxyl group, aminocarbonyl group, hydroxyl group, alkylthio group, phenyl group and pyridyl group; R 2 is a hydrogen atom; R 3 is an alkyl group which may be substituted with a group selected from the group consisting of phenyl group optionally substituted with halogen atom, alkoxy group, nitro group, optionally protected hydroxyl group, alkylamino group and alkynyl group; R 4 is an alkyl group which may be substituted with a phenyl group; m is 1; and n is 2 to 3; or a salt thereof Ingredient (B): A compound having an acetylcholine esterase inhibitory activity or a salt thereof, which is different from ingredient (A).