申请人:Mitsui Toatsu Chemicals, Incorporated
公开号:US04267326A1
公开(公告)日:1981-05-12
New uracil derivatives of the general formula: ##STR1## wherein R.sup.1 stands for a hydrogen atom or a grouping of the formula: ##STR2## R.sup.2 for a hydrogen atom, an alkyl group or a phenyl group and R.sup.3 for an alkyl group or a phenyl group, with the proviso that when both R.sup.1 and R.sup.2 stand for a hydrogen atom, R.sup.3 stands for a phenyl group or a straight chain alkyl group with 3.about.11 carbon atoms, that when R.sup.1 stands for a hydrogen atom and R.sup.2 for methyl group, R.sup.3 stands for an alkyl group with at least 2 carbon atoms or a phenyl group, and that when R.sup.1 stands for a hydrogen atom and R.sup.3 for methyl group, R.sup.2 stands for an alkyl group with at least 2 carbon atoms or a phenyl group. These uracil derivatives are prepared by reacting 5-fluorouracil with an .alpha.-haloalkyl carboxylate or with an aldehyde diacylate or by hydrolyzing a 1,3-bis(acyloxymethyl)-5-fluorouracil with an acid or alkali. These uracil derivatives are useful as improved anti-tumor agents especially for oral administration and injection.
新的尿嘧啶衍生物具有以下一般式:##STR1## 其中R.sup.1代表氢原子或以下式的基团:##STR2## R.sup.2代表氢原子、烷基基团或苯基团,R.sup.3代表烷基基团或苯基团,但要求当R.sup.1和R.sup.2均代表氢原子时,R.sup.3代表苯基团或具有3~11个碳原子的直链烷基基团,当R.sup.1代表氢原子且R.sup.2代表甲基基团时,R.sup.3代表至少具有2个碳原子的烷基基团或苯基团,当R.sup.1代表氢原子且R.sup.3代表甲基基团时,R.sup.2代表至少具有2个碳原子的烷基基团或苯基团。这些尿嘧啶衍生物通过将5-氟尿嘧啶与α-卤代烷基羧酸酯或醛基二酰乙酸酯反应,或通过用酸或碱水解1,3-双(酰氧甲基)-5-氟尿嘧啶来制备。这些尿嘧啶衍生物可用作改进的抗肿瘤药物,特别适用于口服和注射。