Antiviral action, in particular pharmaceutical containing the same novel compounds and with the HIV replication inhibitory activity, it will provide a particularly anti-HIV drugs. Of formula (I): (Wherein the dashed line indicates the presence or absence of a bond, R 1 is a substituted or unsubstituted alkyl or the like； R 2 is a substituted or unsubstituted alkyloxy, etc.； n is 1 or 2； R 3 is such a substituted or unsubstituted aromatic carbocyclic group； R 4 is a hydrogen atom etc； R 5 is a substituted or unsubstituted aromatic carbocyclic group or the like； Y represents a single bond or the like； R 6 alkyl and substituted or unsubstituted； R 7 is such -Z-R 71； Z is -NR 72 -CO- etc.； R 71 alkyl and substituted or unsubstituted； R 72 is such as a hydrogen atom) The compound represented in.抗ウイルス作用、特にＨＩＶ複製阻害活性を有する新規化合物およびそれを含有する医薬、特に抗ＨＩＶ薬を提供する。式（Ｉ）：（式中、破線は結合の存在または非存在を示し、Ｒ１は置換若しくは非置換のアルキル等；Ｒ２は置換若しくは非置換のアルキルオキシ等；ｎは１または２；Ｒ３は置換若しくは非置換の芳香族炭素環式基等；Ｒ４は水素原子等；Ｒ５は置換若しくは非置換の芳香族炭素環式基等；Ｙは単結合等；Ｒ６は置換若しくは非置換のアルキル等；Ｒ７は－Ｚ－Ｒ７１等；Ｚは－ＮＲ７２－ＣＯ－等；Ｒ７１は置換若しくは非置換のアルキル等；Ｒ７２は水素原子等）で示される化合物。
