申请人:Cassella Aktiengesellschaft
公开号:US04816454A1
公开(公告)日:1989-03-28
Substituted 4,5-dihydro-3(2H)-pyridazinones of the formula I ##STR1## wherein R, for example, denotes a radical of the formula ##STR2## R.sup.1 and R.sup.2, for example, denote hydrogen or methyl, R.sup.3, for example, denotes 2-methoxy-ethoxy, 3-pyridyl-methoxy, amino-carbonyl-methoxy, hydroxy-carbonyl-methoxy, methyl-thio, (2-methoxy-ethyl)-amino-carbonyl-methoxy, 3-pyridyl-methyl or 5-methyl-1,3,4-oxadiazol-2-yl and R.sup.4, for example, denotes hydrogen, have useful pharmacological properties and can therefore be used for the preparation of pharmacological products.
公式I的4,5-二氢-3(2H)-吡啶酮的替代物,其中R,例如,表示公式的基团,R.sup.1和R.sup.2,例如,表示氢或甲基,R.sup.3,例如,表示2-甲氧基乙氧基,3-吡啶基甲氧基,氨基羰基甲氧基,羟基羰基甲氧基,甲硫基,(2-甲氧基乙基)-氨基羰基甲氧基,3-吡啶基甲基或5-甲基-1,3,4-噁二唑-2-基,R.sup.4,例如,表示氢,具有有用的药理学性质,因此可以用于制备药理学产品。