PROBLEM TO BE SOLVED: To provide an agent for preventing, inhibiting, or treating AIDS.SOLUTION: The present invention provides a quinoline or isoquinoline derivative having a specific structure illustrated by the following formula.EFFECT: The derivative has a cellular toxicity clearly lower than those of the indole derivatives of the prior art and is able to selectively inhibit splicing events.SELECTED DRAWING: NoneCOPYRIGHT: (C)2017,JPO&INPIT【課題】AIDSを予防、抑制、又は治療する剤の提供。【解決手段】下記で例示される特定の構造を有するキノリン又はイソキノリン誘導体。【効果】先行のインドール誘導体よりも明らかに少ない細胞毒性を示し、スプライシングイベントを選択的に阻害することができる。【選択図】なし