A pyridizinone derivative of the formula I ##STR1## wherein R is F, Cl, Br, I or R.sup.1 R.sup.2 N, R.sup.1 and R.sup.2 are each H, C.sub.1-4 -alkyl or benzyl, R.sup.3, R.sup.4 and R.sup.5 are each H or C.sub.1-4 -alkyl and wherein it is only possible for R to be benzylamino, R.sup.3 to be CH.sub.3 and R.sup.4 to H at the same time if R.sup.5 is alkyl, and salts thereof display positive inotropic properties and vasodilative properties and can be used, in particular, as intermediate products in the production of other pharmaceutical agents.
公式I的
吡啶嗪衍
生物,其中R为F、Cl、Br、I或R1R2N,R1和R2分别为H、C1-4烷基或苄基,R3、R4和R5分别为H或C1-4烷基。如果R5为烷基,则只有在R为
苄胺基,R3为
CH3且R4为H的情况下才可能发生。其盐具有正性肌力作用和扩血管作用,并可用作其他药物制剂生产中的中间体。