Pyridazinones of the following formula (I): ##STR1## where R.sup.1 -R.sup.4 are a variety of substituents and L is a linking group, a pharmaceutical composition for treating congestive heart failure, novel intermediates, methods for such treatment and processes for preparing compounds of formula (I).
以下式(I)的
吡啶并嗪酮:##STR1## 其中R.sup.1-R.sup.4是各种取代基,L是连接基团,用于治疗充血性心力衰竭的药物组合物,新的中间体,用于该治疗的方法以及制备式(I)化合物的过程。