PPAR-activating compound and pharmaceutical composition containing same

A compound represented by the following formula (1): (wherein each of R 1 and R 2 , which may be identical to or different from each other, represents a hydrogen atom, a methyl group, or an ethyl group; each of R 3a , R 3b , R 4a , and R 4b , which may be identical to or different from each other, represents a hydrogen atom, a halogen atom, a nitro group, a hydroxyl group, a C 1-4 alkyl group, a trifluoromethyl group, a C 1-4 alkoxy group, a C 1-4 alkylcarbonyloxy group, a di-C 1-4 alkylamino group, a C 1-4 alkylsulfonyloxy group, a C 1-4 alkylsulfonyl group, a C 1-4 alkylsulfinyl group, or a C 1-4 alkylthio group, or R 3a and R 3b , or R 4a and R 4b may be linked together to form an alkylenedioxy group; X represents an oxygen atom, a sulfur atom, or N-R 5 (R 5 represents a hydrogen atom, a C 1-4 alkyl group, a C 1-4 alkylsulfonyl group, or a C 1-4 alkyloxycarbonyl group); Y represents an oxygen atom, S(O) 1 (1 is a number of 0 to 2), a carbonyl group, a carbonylamino group, an aminocarbonyl group, a sulfonylamino group, or an aminosulfonyl group; Z represents CH or N; n is a number of 1 to 6; and m is a number of 2 to 6) or a salt thereof; and therapeutic drugs containing any of such a compound or salt.