INDAZOLE ACRYLIC ACID AMIDE COMPOUND.

摘要

Disclosed is a compound represented by the formula shown below and a pharmaceutically acceptable salt thereof, which is useful as an IKur-blocker that is useful for the prevention or treatment of cardiac arrhythmia such as atrial fibrillation. wherein the ring X represents a benzene or a pyridine; R¹ represents a substituted alkyl; R² represents an aryl which may be substituted or a heterocyclic group which may be substituted; R³ represents a hydrogen or an alkyl; R⁴ represents a hydrogen, a halogen or an alkyl; R⁵ represents a hydrogen or an alkyl; and R⁶ and R⁷ independently represent a hydrogen or a halogen.