A compound of formula (I) for the treatment of ischemic eye disease, a pharmaceutical composition comprising the compound, a method for producing a medicament for the treatment of ischemic eye disease comprising using the compound, for the treatment of ischemic eye disease There is provided a method of treating ischemic eye disease comprising the use of the compound in the manufacture of a medicament and administering the compound or pharmaceutical composition. Ischemic eye diseases treated according to the present invention include, for example, central retinal artery occlusion, branch retinal artery occlusion, ischemic optic neuropathy, central retinal vein occlusion, branch retinal vein occlusion, diabetic retinopathy or Includes optic nerve disease or optic neuropathy based on ocular hypertension.虚血性眼疾患の処置用の式（Ｉ）の化合物、当該化合物を含む医薬組成物、当該化合物を使用することを含む虚血性眼疾患の処置用医薬の製造方法、虚血性眼疾患の処置用医薬の製造における当該化合物の使用および当該化合物または医薬組成物を投与することを含む虚血性眼疾患の処置方法を提供する。本発明により処置される虚血性眼疾患は、例えば、網膜中心動脈閉塞症、網膜動脈分枝閉塞症、虚血性視神経症、網膜中心静脈閉塞症、網膜静脈分枝閉塞症、糖尿病性網膜症または高眼圧症に基づく視神経疾患もしくは視神経障害を含む。
