BENZOFURAN COMPOUNDS AND THEIR USE

摘要

Benzofuran compound represented by the formula: <IMG> wherein <IMG> represents a group capable of releasing a cation in which ? represents a single or double bond: R1 represents an optionally substituted heterocyclic residue which may be attached to the oxygen atom through a carbon chain; R2 represents a hydrogen atom, a halogen atom, an optionally substituted hydrocarbon residue, an optionally protected hydroxyl group or an optionally protected amino group; Y represents a di- or tri-valent aliphatic hydrocarbon residue having 1 to 8 carbon atoms; and the benzene ring of the benzofuran moiety may have further substituents; or a salt thereof, which has excellent hypoglycemic and hypolipidemic action.