Naphthalene derivatives, process for their preparation and pharmaceutical compositions containing the same.

摘要

Naphthalene derivative of the formula: wherein Ring A is a substituted or unsubstituted benzene ring; each of R<1> and R<2> is a group of the formula: -OR<5>, -NHR<5> or ; or either one of R<1> and R<2> is a lower alkoxy group and other one is a group of the formula: -OR<5>, -NHR<5> or ; each of R<3> and R<4> is a lower alkoxy group, or one of R<3> and R<4> is a lower alkoxy group and the other is a hydrogen atom; R<5> is a substituted alkyl group, a heterocyclic group, a cycloalkyl group, an alkyl group of at least 5 carbon atoms or alkenyl group; and each of R<6> and R<7> is hydrogen atom or a lower alkyl group and salts thereof are disclosed. Said naphthalene derivative (I) and its salts have excellent hypolipidemic activity and are useful for treatment or prophylaxis of hyperlipidemia and/or arteriosclerosis.