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作 者:贾本立[1] 朱雄[2] 陈仁杰[1] 袁铎[1] 徐云根[1]
机构地区:[1]中国药科大学药化教研室,江苏南京210009 [2]中国药科大学医药化工研究所,江苏南京210009
出 处:《合成化学》2015年第8期763-766,共4页Chinese Journal of Synthetic Chemistry
摘 要:间硝基苯甲酸甲酯(1)与氯乙酸甲酯反应制得4-甲氧基羰基甲基-3-硝基苯甲酸甲酯(2);2依次经催化氢化、乙酰化及与原苯甲酸三乙酯反应制得关键中间体(E)-1-乙酰基-3-(乙氧基-苯基-甲烯基)-2-氧-2,3-二氢-1H-吲哚-6-羧甲酸甲酯(5);N-甲基对硝基苯胺依次经氯乙酰化、取代和催化氢化反应制得N-(4-氨基苯基)-N-甲基-2-(4-甲基哌嗪-1-基)乙酰胺(9);5和9经拼合合成了治疗特发性肺纤维化药尼达尼布,总收率22.0%,纯度99.4%,其结构经1H NMR和MS确证。4-Methoxycarbonylmethyl-3-nitrobenzoic acid methyl ester(2) was synthesized by reaction of 3-nitrobenzoic acid methyl ester with methyl chloroacetate. The key intermediate, (E)-1-acetyl-3- ( ethoxy-phenyl-methylene ) -2-oxo-2,3-dihydro-1H-indole-6-carboxylic acid methyl ester ( 5 ), was synthesized by a three-step reaction of hydrogenation, acetylation and reaction with ortho-benzoic acid triethyl ester from 2. N-( 4-aminophenyl ) -N-methyl-2-( 4-methylpiperazin-l-yl ) acetamide ( 9 ) was synthesized by a three-step reaction of acylchlorination, substitution and hydrogenation from N-meth- yl-4-nitro-benzenamine. Nintedanib with an overall yield of 22.0% and purity of 99.4% was synthe- sized by reaction of 5 with 9. The structure was confirmed by l H NMR and MS.
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