PROBLEM TO BE SOLVED: To provide inhibitors of HBV (the hepatitis B virus) replication.SOLUTION: The present invention provides compounds of Formula (ID), stereochemically isomeric forms, salts, hydrates, and solvates thereof (where X is CR; Ris H, CN, F or the like; R-Rare H, F, Br, CHFor the like; Ris H or F; Ris H, C-Calkyl or the like; Ris H; Ris C-Calkyl and the like).SELECTED DRAWING: None【課題】B型肝炎ウイルス(HBV)複製の阻害剤の提供。【解決手段】式(ID)で表される化合物、その立体異性体、塩、水和物、溶媒和物。式中、Xは、CR7;R7は、H、CN、F等;Ra~Rcは、H、F、Br、CHF2等;Rdは、HまたはF;R4は、H、C1~C3アルキル等;R5はH;R6はC2~C6アルキル等を表す。【選択図】なし