New diazepinones of formula I ##STR1## wherein the substituents are defined herein, which compounds exhibit favorable effects on heart rate and in view of the absence of inhibitory effects on gastric acid secretion and salivation and the absence of mydriatic effects, are suitable as vagal pacemakers for the treatment of bradycardia and bradyarrhythmia in human and veterinary medicine.
式I的新二氮杂环
酮类化合物 ##STR1## 其中取代基如本文所定义,这些化合物表现出对心率的良好影响,并且鉴于其对胃酸分泌和唾液分泌无抑制作用,以及无散瞳作用,因此适合作为迷走神经起搏器,用于治疗人类和兽医学中的心动过缓和心律过缓。