SUBSTITUTED CARBOXYLIC ACID DERIVATIVES

摘要

Novel substituted carboxylic acid derivatives which bind to human peroxisome proliferator-activated receptor a (PPARa) as a ligand thereof and activate the same to thereby exert a lipid-lowering effect, an arteriosclerosis-preventing effect, an anti-obesity effect, a hypoglycemic effect, etc.; and a process for producing the same. Namely, substituted carboxylic acid derivatives represented by the following general formula (1) and pharmaceutically acceptable salts and hydrates of the same; and a process for producing these compounds: (1) wherein R<1>, R<3> and R<5> represent each hydrogen or lower alkyl; R<2> represents hydrogen or lower alkoxy; R<4> represents hydrogen, trifluoromethyl, lower alkoxy, halogeno, optionally substituted phenoxy or benzyloxy; n is an integer of from 0 to 3; and the carboxylate substituent is located at the p-position concerning R<2> or at the p-position concerning (CH2)n.