申请人:Takeda Chemical Industries, Ltd.
公开号:US04946846A1
公开(公告)日:1990-08-07
New fused pyrimidines of the general formula (I): ##STR1## wherein the ring .circle. A is a pyridine ring which may be hydrogenated or a benzene ring which may be hydrogenated, X is an amino group or a hydroxyl group, R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are independently hydrogen, fluorine or a lower alkyl group, and --COOR.sup.5 and --COOR.sup.6 are independently a carboxyl group which may be esterified, and salts thereof have excellent anti-tumor effects, and they can be produced by the following reaction scheme: ##STR2## in which .circle. A is, X, R.sup.1 to R.sup.4, --COOR.sup.5 have the above meanings.
新的融合嘧啶化合物的一般式(I)如下:##STR1## 其中环A是可以氢化的吡啶环或可以氢化的苯环,X是氨基或羟基,R.sup.1、R.sup.2、R.sup.3和R.sup.4独立地是氢、氟或较低的烷基,--COOR.sup.5和--COOR.sup.6独立地是可以酯化的羧基,其盐具有优异的抗肿瘤效果,可以通过以下反应方案制备:##STR2## 其中,环A、X、R.sup.1至R.sup.4、--COOR.sup.5具有上述含义。