The present invention provides a compound that suppresses the activity of TRPV4 and is useful for preventing or improving overactive bladder, irritable bowel syndrome, and the like. A rosmarinic acid derivative represented by the following general formula (I) or a salt thereof. Embedded image [Selection diagram] None【課題】本発明は、TRPV4の活性を抑制し、過活動膀胱や過敏性腸症候群等の予防又は改善に有用な化合物を提供する。【解決手段】下記一般式(I)で表されるロズマリン酸誘導体又はその塩。【化1】【選択図】なし