The invention relates to a method of synthesizing methyl (Z)-3-[[4-[methyl[2-(4-methyl-1-piperazinyl)acetyl]amino]phenyl]amino]phenylmethylene)-oxindole-6-carboxylate of formula 1, known under the generic name of intedanib or nintedanib. The present method comprises reacting (E)-1-acetyl-3-(methoxyphenylmethylene)-oxindole-6-carboxylate of formula 2 with N-(4-aminophenyl)-N,4-dimethyl-1-piperazine acetamide and subsequently reacting with a suitable base in a suitable solvent, characterized in that the reaction is carried out without isolation of the intermediate and the base is selected from an alkali hydroxide, potassium tert-butoxide and sodium ethoxide.
本发明涉及一种合成式 1 的(Z)-3-[[4-[甲基[2-(4-甲基-1-
哌嗪基)乙酰]
氨基]苯基]
氨基]苯基亚甲基)-氧化
吲哚-6-
羧酸甲酯的方法,其通用名称为 intedanib 或 nintedanib。本方法包括使式 2 的(E)-1-乙酰基-3-(
甲氧基苯基亚甲基)-氧杂
吲哚-6-
羧酸盐与 N-(4-
氨基苯基)-N,4-二甲基-1-
哌嗪乙酰胺反应,然后在适当的溶剂中与适当的碱反应,其特征在于该反应在不分离中间体的情况下进行,碱选自碱式氢氧化物、
叔丁醇钾和
乙醇钠。