PROBLEM TO BE SOLVED: To provide an antiarrhythmic drug and an atrial fibrillation inhibitor having an excellent inhibitory action relative to arrhythmia including atrial fibrillation, less side effects and high stability, a sustained atrial fibrillation model suitably used for screening of the atrial fibrillation and a method for producing the same, and a method for screening the atrial fibrillation inhibitor.SOLUTION: An atrial fibrillation inhibitor comprises a compound represented by any of formula (I) to (VI) or a pharmacologically acceptable salt thereof. In formula (III), Gluc represents glucuronic acid.COPYRIGHT: (C)2013,JPO&INPIT【課題】心房細動を含む不整脈に対して優れた抑制作用を有し、副作用が少なく安全性の高い抗不整脈剤、心房細動抑制剤、該心房細動抑制剤のスクリーニングに好適に利用できる持続性心房細動モデル及びその製造方法、スクリーニング方法の提供。【解決手段】式(I)から(VI)いずれかの化合物又はその薬理学的に許容し得る塩。式(III)において、Glucは、グルクロン酸を表す。【選択図】図5C
