A pyridazinone compound represented by the general formula ##STR1## wherein Ar is ##STR2## in which R.sup.1, R.sup.2 and R.sup.3 may be identical or different, and each represents a hydrogen atom, a lower alkyl group, a trifluoromethyl group, a halogen atom, a cyano group or a nitro group, and R.sup.4 represents a hydrogen atom, a lower alkoxy group, or a lower alkyl group substituted by a lower alkoxy group or a carbamoyl group, and C* is an assymmetric carbon atom, or a salt thereof. This compound is useful for the treatment of diseases of the circulatory system.
一种
吡啶并
咪唑酮化合物,其通式表示为##STR1##其中Ar为##STR2##其中R.sup.1,R.sup.2和R.sup.3可以相同也可以不同,每个代表氢原子,较低的烷基,三
氟甲基,卤素原子,
氰基或硝基,而R.sup.4代表氢原子,较低的烷氧基或被较低的烷氧基或
氨甲酰基取代的较低的烷基,而C*是一个不对称的碳原子,或其盐。该化合物对治疗循环系统疾病有用。