The invention relates to compounds of formula (I), tautomers and salts thereof wherein R1 is methyl or ethyl, R2 is n-butyl or o-methoxyphenyl, R3 is hydrogen or hydroxy; and R4 is hydrogen or methyl. These compounds are receptor tyrosine kinase EphB4 inhibitors useful for the treatment of angiogenesis dependent cancers and intraocular neovascular syndromes.
本发明涉及公式(I)的化合物,互变异构体和其盐,其中R1为甲基或乙基,R2为正丁基或邻
甲氧基苯基,R3为氢或羟基;R4为氢或甲基。这些化合物是受体
酪氨酸激酶EphB4的
抑制剂,可用于治疗依赖于血管生成的癌症和眼内新生血管综合症。