New fused pyrimidines of the general formula (I):
wherein the ring Ⓐ 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, R¹, R², R³ and R⁴ are independently hydrogen, fluorine or a lower alkyl group, and -COOR⁵ and -COOR⁶ 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:
in which Ⓐ is , X, R¹ to R⁴, -COOR⁵ have the above meanings.
通式(I)的新型融合
嘧啶:
其中环Ⓐ是可氢化的
吡啶环或可氢化的苯环,X 是
氨基或羟基,R¹、R²、R³ 和 R⁴ 独立地是氢、
氟或低级烷基,-COOR⁵ 和 -COOR⁶ 独立地是可酯化的羧基,其盐类具有优异的抗肿瘤效果,可通过以下反应方案制得:
其中 Ⓐ是 ,X、R¹至 R⁴、-COOR⁵具有上述含义。