abstract |
This invention provides a drug which has inhibitory activities against thymidine phosphorylase and inhibits metastasis of a cancer. Specifically, this invention relates to a cancerous metastasis inhibitor comprising, as an active ingredient, a uracil derivative represented by the following formula (1): <CHEM> wherein R<1> represents a chlorine, bromine or iodine atom or a cyano or lower alkyl group and R<2> represents a substituted or unsubstituted 4-8 membered heterocyclic group having nitrogen atoms or a substituted or unsubstituted amidinothio, guanidino, (lower alkyl)amidino, amino or like group, or a salt thereof. |