| abstract |
A benzodiazepinone derivative represented by general formula (I) or a salt thereof, having a selective muscarine M2 receptor antagonism and being useful as a preventive or remedy for various diseases wherein muscarine M2 receptors participate, such as sick sinus syndrome including sinus bradycardia, sinus arrest and bradycardia-tachycardia syndrome, bradyarrhythmia including atrioventricular block and vagal bradycardia, and nervous syncope (carotid sinus anaphylaxis). |