compound, medicament, methods for reducing retinol binding protein 4 and for prophylaxis or treatment of macular degeneration and / or a disease, and use of a compound.

摘要

It is a heterocyclic compound that has an excellent rbp4 reducing effect and is useful as a preventive or therapeutic drug for diseases or symptoms mediated by an increase in rbp4 or rbp4-supplied retinol. a compound represented by the formula (i): [the symbols in the formula are as mentioned in the description.] or a salt of said compound has an excellent rbp4 reducing effect and is useful as a preventive or therapeutic drug for diseases or symptoms mediated by an increase in rbp4 or retinol supplied by rbp4.