[EN] A METHOD FOR PREPARING METHYL (Z)-3-[[4-[METHYL[2-(4-METHYL-1-PIPERAZINYL)ACETYL] AMINO]PHENYL]AMINO]PHENYLMETHYLENE)-OXINDOLE-6-CARBOXYLATE (INTEDANIB, NINTEDANIB)<br/>[FR] PROCÉDÉ DE PRÉPARATION DE (Z)-3-[[4-[MÉTHYL-[2-(4-MÉTHYL-1-PIPÉRAZINYL)ACÉTYL]AMINO]PHÉNYL]AMINO]PHÉNYLMÉTHYLÈNE)-OXINDOLE-6-CARBOXYLATE DE MÉTHYLE (INTÉDANIB, NINTÉDANIB)
申请人:ZENTIVA KS
公开号:WO2017016530A1
公开(公告)日:2017-02-02
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 a) a reaction of methyl oxindole-6-carboxylate with acetic anhydride at a temperature of 130 - 140°C, providing methyl 1-acetyl-oxindole-6-carboxylate; b) a reaction of methyl 1-acetyl-oxindole-6-carboxylate of with trimethyl orthobenzoate and acetic anhydride in the presence of toluene, providing methyl (E)-1-acetyl-3-(methoxyphenylmethylene)-oxindole-6-carboxylate; c) a reaction (E)-1-acetyl-3-(methoxyphenylmethylene)-oxindole-6-carboxylate with N-(4-aminophenyl)-N,4-dimethyl-1-piperazine acetamide and subsequently with an alkali hydroxide or alkali alkoxide in methanol or ethanol without isolation of the intermediate, providing methyl (Z)-3-[[4-[methyl[2-(4-methyl-1-piperazinyl)acetyl]amino]phenyl] amino]phenylmethylene)-oxindole-6-carboxylate, wherein the reaction is conducted at a temperature of 50 to 100°C. (1)
该发明涉及一种合成甲基(Z)-3-[[4-[甲基[2-(4-甲基-1-哌嗪基)乙酰]氨基]苯基]氨基]苯甲亚甲酸酯的方法,通用名称为恩替他尼或尼替他尼。该方法包括:a)将甲基氧吲哚-6-羧酸酯与乙酸酐在130-140°C的温度下反应,得到甲基1-乙酰氧吲哚-6-羧酸酯;b)将甲基1-乙酰氧吲哚-6-羧酸酯与对甲苯甲酸三甲酯和乙酸酐在甲苯存在下反应,得到甲基(E)-1-乙酰-3-(甲氧基苯基亚甲基)-氧吲哚-6-羧酸酯;c)将(E)-1-乙酰-3-(甲氧基苯基亚甲基)-氧吲哚-6-羧酸酯与N-(4-氨基苯基)-N,4-二甲基-1-哌嗪乙酰胺反应,随后与甲醇或乙醇中的碱性氢氧化物或碱性醇醚反应,无需中间体分离,得到甲基(Z)-3-[[4-[甲基[2-(4-甲基-1-哌嗪基)乙酰]氨基]苯基]氨基]苯甲亚甲酸酯,反应温度为50至100°C。