< Topic >Offer the anti- tumor medicine where the tumor accumulation effect and the tumor reduction effect which are superior are high.Solutions The below-mentioned formula the anti- tumor medicine which contains the chemical compound of statement in (1) as the active ingredient.< Conversion 1 >(In R the above-mentioned formula1, R2, R3 the hydrogen atom, is the alkyl group or benzyl basis, R1, R2, R3 also it is good being the same differing mutually. In addition X* shows the radioactive halogen atom.)< Selective figure > It is not【課題】より優れた腫瘍集積効果、腫瘍縮小効果の高い抗腫瘍薬を提供すること。【解決手段】 下記式(1)に記載の化合物を有効成分として含有する抗腫瘍薬。【化1】(上記式中R1、R2、R3は水素原子、アルキル基又はベンジル基であり、R1、R2、R3は同じであっても、互いに異なっていても良い。またX*は放射性ハロゲン原子を示す。)【選択図】 無し
