Benzofuro ¬3,2-c quinoline compounds

摘要

Benzofuro[3,2-c]quinoline compounds of the general formula: <CHEM> wherein R<1> represents a hydrogen atom, a hydroxy group or an unsubstituted or substituted straight- or branched-chain alkoxy group having 1 to 10 carbon atoms wherein the substituent is selected from a hydroxy group, a carboxy group, a carbamoyl group and an alkoxycarbonyl group having 2 to 7 carbon atoms; R<2> represents a hydrogen atom or an unsubstituted or substituted straight- or branched-chain alkyl group having 1 to 10 carbon atoms wherein the substituent is selected from a hydroxy group, a carboxy group, a carbamoyl group and an alkoxycarbonyl group having 2 to 7 carbon atoms, and the pharmaceutically acceptable salts thereof, possess a strong inhibitory action on bone resorption and a stimulatory effect on ossification and are thus useful for the prevention or treatment of osteoporosis.