The present invention provides a novel antimetabolic anticancer agent that has an excellent balance between antitumor effect and toxicity. Specifically, the present invention provides a medicament containing, as an active ingredient, a 5-fluorouracil derivative represented by Formula (I) or a salt thereof:
wherein R1 represents a hydrogen atom or a protecting group of a hydroxy group, R2 represents a lower alkoxy-lower alkyl group or a tetrahydrofuranyl group, X represents a carbon atom or a nitrogen atom, and Y represents a halogen atom or a cyano group.
本发明提供了一种新型的抗代谢抗癌剂,具有良好的抗肿瘤效果和毒性平衡。具体而言,本发明提供了一种药物,其包含以下化合物作为活性成分:式(I)所表示的5-
氟尿
嘧啶衍
生物或其盐:其中,R1表示
氢原子或羟基的保护基,R2表示较低的烷
氧基-较低的烷基基团或
四氢呋喃基团,X表示
碳原子或
氮原子,Y表示卤素原子或
氰基。