Novel 2'-deoxy-5- fluorouridine derivatives represented by the formula;
wherein R represents a hydrogen atom, an alkyl group havir. 1 to 5 carbon atoms, an alkoxy group having 1 to 4 carbon atoms, an acetyloxy group or a halogen atom, and n is an integer in the range of 1 to 3 are provided. These have good antitumor activities and low toxicities and are suitable for use as antitumor agents. The new compounds may be prepared by reacting 2'-deoxy-3'. 5'-di-0-acetyl-5- fluorouridine with a benzoyl halide of the formula;
where hal is a halogen atom and R and n are as before, preferably in the presence of an organic base, particularly triethylamine and a solvent, particularly dioxane.
新颖的 2'-脱氧-
5-氟尿苷衍
生物,由式表示;
其中 R 代表氢原子、具有 1 至 5 个碳原子的烷基、具有 1 至 4 个碳原子的烷氧基、乙酰氧基或卤素原子。提供了具有 1 至 5 个碳原子的烷基、具有 1 至 4 个碳原子的烷氧基、乙酰氧基或卤素原子,且 n 为 1 至 3 的整数。这些化合物具有良好的抗肿瘤活性和低毒性,适合用作抗肿瘤剂。新化合物可通过反应 2'-deoxy-3'.5'-二-0-乙酰基-
5-氟尿苷与式中的苯甲
酰卤反应制备;
其中 hal 为卤素原子,R 和 n 如前,最好在有机碱(特别是
三乙胺)和溶剂(特别是
二噁烷)存在下进行。