Patent ID: 8309561

Claim:
A pharmaceutical composition comprising a phenylalanine compound of formula (2) or a pharmaceutically acceptable salt thereof as an active ingredient and a pharmaceutically acceptable carrier thereof, wherein R21 represents a hydroxyl group, an alkoxyl group having 1 to 6 carbon atoms, a morpholinoethyloxy group or a benzyloxy group which may be substituted with one or more methyl groups or one or more methoxy groups, R22 represents a hydrogen atom or an alkyl group having 1 to 3 carbon atoms, R24 represents a methyl group or an ethyl group, R 2 ′ represents a hydrogen atom, a fluorine atom or a chlorine atom, X 2 represents —CH(R2a)-, —CH 2 CH 2 — or —N(R2a)CH 2 CH 2 —, wherein R2a represents a hydrogen atom or a methyl group, and Y 21 and Y 22 represent either one of the combinations, (Cl, Cl), (Cl, Me), (Cl, F), (F, F) and (F, Me).