PROBLEM TO BE SOLVED: To provide a novel compound for inhibiting the entry of filovirus into cells, a pharmaceutical composition containing the compound, an anti-filovirus agent or an agent for inhibiting the entry of filovirus into cells, or a method for inhibiting the process of entry of filovirus into cells in vitro, a method for treating filovirus infections, or the like.SOLUTION: The present invention provides a compound represented by formula (I) or a hydrate thereof or a pharmaceutically acceptable salt of the compound or a hydrate thereof (R1 is H or the like R2 is Alk or the like R4 is an optionally substituted phenyl group or the like).SELECTED DRAWING: NoneCOPYRIGHT: (C)2019,JPO&INPIT【課題】フィロウイルスが細胞へ侵入することを阻害する新規な化合物、当該化合物を含む医薬組成物、抗フィロウイルス剤もしくはフィロウイルスの細胞侵入阻害剤、又はフィロウイルスの細胞侵入過程をin vitroで阻害する方法、フィロウイルス感染症の処置方法等を提供。【解決手段】式(I)で表される化合物もしくはその水和物又は当該化合物の薬学的に許容可能な塩もしくはその水和物(R1は、H等;R2は、Alk等;R4は、置換基を有しても良いフェニル基等)【選択図】なし
