PHTHALAZINE COMPOUNDS AND THERAPEUTIC AGENTS FOR ERECTILE DYSFUNCTION

摘要

Phthalazine derivatives represented by general formula (I) or pharmacologically acceptable salts thereof or hydrates of the same usable as remedies for erectile dysfunction, wherein R1 and R2 are the same or different and each represents halogeno, optionally halogenated alkyl or alkoxy, or cyano; X represents cyano, nitro, halogeno, optionally substituted hydroxyimino or optionally substituted heteroaryl; and Y represents heteroaryl, aryl, alkynyl, alkenyl, alkyl or cyclic amine.