A 5-fluoropyrimidin-4-one derivative represented by the formula ##STR1## wherein R is straight-chain or branched-chain alkyl having 4 to 18 carbon atoms, straight-chain or branched-chain alkenyl having 2 to 18 carbon atoms, alkylene oxido having 3 to 10 carbon atoms, aryl or aralkyl; Processes for preparing the derivative; An anti-tumor composition containing the derivative as an effective component and an excipient.
一种由以下公式表示的5-
氟嘧啶-4-酮衍
生物:##STR1## 其中R为直链或支链烷基,具有4到18个碳原子,直链或支链烯基,具有2到18个碳原子,具有3到10个碳原子的烷基氧化物,芳基或芳基烷基;制备该衍
生物的方法;一种抗肿瘤组合物,包含该衍
生物作为有效成分和载体。