Provided are a uracil derivative represented by the following formula (1):
wherein R1 represents a chlorine, bromine or iodine atom or a cyano or lower alkyl group; and R2 represents a 4-8 membered heterocyclic group having 1-3 nitrogen atoms, which may be substituted by one or more lower alkyl, imino, hydroxyl, hydroxymethyl, methanesulfonyloxy, amino or nitro groups; an amidinothio group, one or more of the hydrogen atom(s) on one or both of the nitrogen atoms of which may each be substituted by a lower alkyl group; a guanidino group, one or more of the hydrogen atom(s) on one, two or all of the nitrogen atoms of which may each be substituted by a lower alkyl or cyano group; a (lower alkyl)amidino group; an amino group, one or both of the hydrogen atoms on the nitrogen atom of which may each be substituted by a lower alkyl group; a group -CH2N(Ra)Rb in which Ra and Rb may be the same or different and each represents a hydrogen atom or a lower alkyl group or Ra and Rb may form a pyrrolidine ring together with the nitrogen atom to which Ra and Rb are bonded; a group -NH-(CH2)m-Z in which Z represents an amino group, one or both of the hydrogen atoms on the nitrogen atom of which may each be substituted by a lower alkyl group, or a cyano group, and m stands for an integer of from 0 to 3; a group NRc(CH2)n-OH in which Rc represents a hydrogen atom or a lower alkyl group, and n stands for a natural number of from 1 to 4; a group -X-Y in which X represents S or NH, and Y represents a 2-imidazolin-2-yl, 2-imidazolyl, 1-methylimidazol-2-yl, 1,2,4-triazol-3-yl, 2-pyrimidyl or 2-benzimidazolyl group which may be substituted by one or more lower alkyl groups; or a ureido or thioureido group, one or more of the hydrogen atom(s) on one or both of the nitrogen atoms of which may each be substituted by a lower alkyl group; or a salt thereof; as well as a pharmaceutical, antitumor effect potentiator and antitumor agent containing same as an active ingredient.
本发明提供了由下式(1)代表的尿
嘧啶衍
生物:
其中 R1 代表
氯、
溴或
碘原子或
氰基或低级烷基;R2 代表具有 1-3 个氮原子的 4-8 位杂环基团,可被一个或多个低级烷基、亚
氨基、羟基、羟甲基、
甲磺酰氧基、
氨基或硝基取代;脒基,其一个或多个氮原子或两个氮原子上的一个或多个氢原子可分别被低级烷基取代;
胍基,其中一个、两个或全部氮原子上的一个或多个氢原子可分别被低级烷基或
氰基取代; (低级烷基)脒基;
氨基,其中一个或两个氮原子上的氢原子可分别被低级烷基取代;基团-
CH2N(Ra)Rb,其中 Ra 和 Rb 可以相同或不同,各自代表一个氢原子或一个低级烷基,或 Ra 和 Rb 可与 Ra 和 Rb 键合的氮原子一起形成一个
吡咯烷环;基团-NH-(
CH2)m-Z,其中 Z 代表
氨基,其氮原子上的一个或两个氢原子可分别被低级烷基或
氰基取代,m 代表 0 至 3 的整数; 基团 NRc( )n-OH,其中 Rc 代表氢原子或低级烷基,n 代表 1 至 4 的自然数;基团-X-Y,其中 X 代表 S 或 NH,Y 代表可被一个或多个低级烷基取代的
2-咪唑啉-2-基、2-
咪唑基、1-甲基
咪唑-2-基、
1,2,4-三唑-3-基、2-
嘧啶基或 2-
苯并咪唑基;或
脲基或
硫脲基,其中一个或多个氮原子上的氢原子或两个氮原子上的氢原子可分别被一个低级烷基取代;或其盐;以及含有上述物质作为活性成分的药物、抗肿瘤增效剂和抗肿瘤剂。