PROBLEM TO BE SOLVED: To provide an oligomer of lyso GM3 or its analogue, which has an activity for inhibiting the phosphation of EGFR (epitheliocyte growth factor receptor) and is useful as an anticancer agent.SOLUTION: This compound is represented by the formula of Figure. The medicine contains the compound as an active ingredient.COPYRIGHT: (C)2008,JPO&INPIT【課題】上皮細胞成長因子レセプター(EGFR)のリン酸化を阻害する活性を有し、抗癌剤として有用なリゾGM3及びその類似体のオリゴマーの提供。【解決手段】下記式で示される化合物。【選択図】なし