A COMPOUND REPRESENTED BY THE FOLLOWING GENERAL FORMULA (II) OR A SALT THEREOF IS USED AS AN ACTIVATOR OF PPARδ. R2A >;11. '--^@C02H RI AA-BA A @0_JZ@ GA WHEREIN Gª IS 0, CH2 OR THE LIKE; Aª IS THIAZOLE, OXAZOLE, OR THIOPHENE, WHICH CAN HAVE A SUBSTITUENT SUCH AS C1-8 ALKYL, C1-8 ALKOXY, HALOGEN, C1-8 ALKYL SUBSTITUTED WITH HALOGEN OR THE LIKE; Bª IS A C1-8 ALKYLENE OR C2-8 ALKENYLENE CHAIN; AND EACH OF R1ª LA AND R2ª INDEPENDENTLY IS HYDROGEN, CI-8 ALKYL, C1-8 ALKOXY, HALOGEN, C1-8 ALKYL SUBSTITUTED WITH HALOGEN OR THE LIKE.