Patent ID: 7452905

Claim:
A phenylalanine compound of formula (1) or a pharmaceutically acceptable salt thereof: wherein A represents one of formula (26-2), (26-3), or (27): wherein each of Ra, Rb, Rc, and Rd represents a hydrogen atom, R2 and R2′ together form an alkylene group having 4 to 6 carbon atoms, each of R3 and R4 represents a hydrogen atom, a lower alkyl group, a lower alkoxyl group, a lower alkoxycarbonyl group, a lower alkylcarbonyl group, a cyano group, or a nitro group, B represents a hydroxyl group or a lower alkoxyl group, E represents a hydrogen atom, D represents a phenyl group which may be substituted with one or more substituents selected from the group consisting of halogeno, alkoxy, alkyl, hydroxyl, halogenoalkyl, halogenoalkoxy, and lower-alkylsulfonylamino, T represents C(═O), and J and J′ may be the same or different from each other and each represents a hydrogen atom, a halogen atom, a lower alkyl group, a lower alkyloxy group or nitro group.