PROBLEM TO BE SOLVED: To provide a novel antitumor compound.SOLUTION: There are provided a kahalalide F-based compound expressed by formula 1 and a pharmaceutically acceptable salt thereof.COPYRIGHT: (C)2012,JPO&INPIT【課題】改善された抗腫瘍特性を有する新規カハラリド化合物の提供。【解決手段】式1に示すカハラリドF系化合物および薬学上許容される塩。【選択図】なし