Use of 1,4-benzothiazepine derivatives for the preparation of a medicament FOR the TREATMENT OF ATRIAL FIBRILLATION

摘要

The present invention relates to a medical composition for atrial fibrillation treatment, comprising a compound represented by the following formula ÄIÜ: <CHEM> Äwherein R<1> represents a hydrogen atom or lower alkoxy group; R<2> represents a hydrogen atom, lower alkoxy group or phenyl group (wherein the phenyl group may be substituted with 1 to 3 substituents selected from a group consisting of a hydroxides group and a lower alkoxy group), <CHEM> (wherein R<3> represents an acyl group); X represents -CO-or -CH2-, and n represents an integer of 1 or 2.Ü The present invention also relates to a method of treating atrial fibrillation using said compound, and to the use of said compound for producing a medicine for atrial fibrillation treatment or salts thereof or prodrugs thereof.