The novel 5'-deoxy-5-fluorocytidine derivatives of formula ##STR1## wherein R.sup.1, R.sup.2 and R.sup.3 are hydrogen or an easily hydrolyzable radical under physiological conditions, with the proviso that, at least one or R.sup.1, R.sup.2 and R.sup.3 is an easily hydrolyzable radical under physiological conditions, as well as hydrates of solvates of these compounds have antitumor properties. They can be prepared from compounds of formula I, wherein R.sup.1 is hydrogen or an amino-protecting radical and R.sup.2 and R.sup.3 are hydrogen or a hydroxy-protecting radical or taken together are a cyclic hydroxy-protecting radical.
公式为##STR1##的小说5'-去氧-5-
氟胞苷衍
生物,其中R.sup.1,R.sup.2和R.sup.3为氢或在生理条件下容易
水解的基团,但请注意,至少一个R.sup.1,R.sup.2和R.sup.3为在生理条件下容易
水解的基团,以及这些化合物的
水合物或溶剂化物具有抗肿瘤性能。它们可以从公式I的化合物制备而来,其中R.sup.1为氢或
氨基保护基团,R.sup.2和R.sup.3为氢或羟基保护基团,或者一起取代为环状羟基保护基团。