申请人:Takeda Chemical Industries, Ltd.
公开号:US05403843A1
公开(公告)日:1995-04-04
A condensed pyrimidine derivative of the formula (I): ##STR1## wherein the ring A stands for an optionally substituted 5-membered ring; B stands for an optionally substituted divalent 5- or 6-membered homo- or hetero-cyclic group; X stands for, among others, amino group; Y stands for, among others, hydrogen atom, halogen atom or amino group; Z stands for a divalent aliphatic group having five or less atoms forming straight chain, optionally having nitrogen, whose chain portion may optionally have a hetero-atom; W stands for, among others, --NH--CO-- or --CO--NH--; R.sup.1 stands for an optionally substituted cyclic or chain-like group; COOR.sup.2 stands for an optionally esterified carboxyl group; and p denotes an integer of 1 to 4, provided that when --W--R.sup.1 denotes a moiety represented by the formula: ##STR2## wherein COOR.sup.16 and COOR.sup.17 are, independently, an optionally esterified carboxyl group and n denotes an integer of 1 to 5, p denotes 1, 3 or 4, or a salt thereof, exhibiting highly specific toxicities to various tumor cells and excellent therapeutic effects on methotrexate-resistant tumor cells as well.
化学式(I)的一种缩合嘧啶衍生物:##STR1## 其中,环A代表一个可选择地取代的5元环;B代表一个可选择地取代的二价5-或6元同源或异源环基团;X代表,除其他外,氨基团;Y代表,除其他外,氢原子、卤原子或氨基团;Z代表一个由五个或更少原子形成的直链的二价脂肪基团,可选择地含有氮,其链部分可选择地具有一个杂原子;W代表,除其他外,--NH--CO--或--CO--NH--;R.sup.1代表一个可选择地取代的环状或链状基团;COOR.sup.2代表一个可选择酯化的羧基团;p表示1到4的整数,但当--W--R.sup.1表示由以下式表示的基团时:##STR2## 其中,COOR.sup.16和COOR.sup.17分别是可选择酯化的羧基团,n表示1到5的整数,p表示1、3或4,或其盐,对各种肿瘤细胞表现出高度特异毒性,并对甲氨蝶呤耐药肿瘤细胞具有优异的治疗效果。