申请人:Taiho Pharmaceutical Co., Ltd.
公开号:US05420117A1
公开(公告)日:1995-05-30
This invention provides a 5-substituted uridine derivative of the formula ##STR1## wherein X is F or CF.sub.3, R.sub.1 and R.sub.2 each represent a group --OSi--(R.sub.4)(R.sub.5)(R.sub.6) (wherein R.sub.4, R.sub.5 and R.sub.6 represent C.sub.1 -C.sub.10 alkyl or the like), OH, aminoacyloxy group wherein the amino group may be substituted with lower alkyl group or carboxylalkylcarbonyloxy group, R.sub.3 is a group --OSi(R.sub.4)(R.sub.5)(R.sub.6), H, OH, aminoacyloxy group wherein the amino group may be substituted with lower alkyl group, or carboxylalkylcarbonyloxy group, and at least one of R.sub.1, R.sub.2 and R.sub.3 is a group --OSi--(R.sub.4)(R.sub.5)(R.sub.6), with the proviso that when X is fluorine atom, R.sub.3 is not hydrogen, and an intermediate for the preparation thereof, preparation processes of the derivative and anti-tumor agent containing the derivative as an active ingredient.
本发明提供了一种公式为##STR1##的5-取代尿嘧啶衍生物,其中X为F或CF.sub.3,R.sub.1和R.sub.2分别表示羟基、氨基酰氧基(其中氨基可能被较低的烷基或羧基烷基羰氧基取代)、--OSi--(R.sub.4)(R.sub.5)(R.sub.6)基团(其中R.sub.4,R.sub.5和R.sub.6表示C.sub.1-C.sub.10烷基或类似基团),R.sub.3为--OSi(R.sub.4)(R.sub.5)(R.sub.6)基团、氢、羟基、氨基酰氧基(其中氨基可能被较低的烷基取代)或羧基烷基羰氧基,且R.sub.1、R.sub.2和R.sub.3中至少有一个为--OSi--(R.sub.4)(R.sub.5)(R.sub.6)基团,但当X为氟原子时,R.sub.3不为氢,以及制备其中间体、制备该衍生物的方法和含有该衍生物作为活性成分的抗肿瘤剂。