Patent ID: 7049342

Claim:
A substituted phenylpropionic acid derivative represented by the formula (1): wherein R 1 represents a lower alkyl group of 1 to 4 carbon atoms, lower alkoxy group having 1 to 3 carbon atoms, trifluoromethyl group, trifluoromethoxy group, phenyl group which is unsubstituted or substituted with at least one lower alkyl group of 1 to 4 carbon atoms or a lower alkoxy group of 1 to 3 carbon atoms, phenoxy group which is unsubstituted or substituted with at least one lower alkyl group of 1 to 4 carbon atoms or a lower alkoxy group of 1 to 3 carbon atoms or benzyloxy group which is unsubstituted or substituted with at least one lower alkyl group of 1 to 4 carbon atoms or a lower alkoxy group of 1 to 3 carbon atoms, R 2 represents a hydrogen atom, lower alkyl group of 1 to 4 carbon atoms or lower alkoxy group of 1 to 3 carbon atoms, R 3 represents a lower alkoxy group of 1 to 3 carbon atoms, and and pharmaceutically acceptable salts and hydrates thereof.