5-Fluorouracil derivatives represented by the formula ##SPC1## Wherein R is arylcarbonyl, substituted arylcarbonyl, heterocyclic carbonyl, alkylsulfonyl, arylsulfonyl, substituted arylsulfonyl, heterocyclic sulfonyl or alicyclic sulfonyl are effective antimetabolites useful in mammary gland or gastrointestinal cancer therapy.
公式为##
SPC1##的5-
氟尿
嘧啶衍
生物,其中R是芳基羰基、取代芳基羰基、杂环羰基、烷基磺酰基、芳基磺酰基、取代芳基磺酰基、杂环磺酰基或脂环磺酰基,是治疗乳腺或胃肠道癌症的有效抗代谢药物。