Synthesis of the Kinase Inhibitors Nintedanib, Hesperadin, and Their Analogues Using the Eschenmoser Coupling Reaction
作者:Lukáš Marek、Jiří Váňa、Jan Svoboda、Jiří Hanusek
DOI:10.1021/acs.joc.1c01269
日期:2021.8.6
used for the synthesis of eight kinase inhibitors including Nintedanib and Hesperadin in yields exceeding 76%. Starting compounds for the synthesis are also easily available in good yields. 3-Bromooxindoles were prepared either from corresponding isatins using a three-step synthesis in an average overall yield of 65% or by direct bromination of oxindoles (yield of 65–86%). Starting N-(4-piperidin-
一种新的合成方法,包括取代的 3-溴代吲哚(H, 6-Cl, 6-COOMe, 5-NO 2)与两个取代的硫代苯甲酰胺在二甲基甲酰胺或乙腈中的 Eschenmoser 偶联反应,用于合成八种激酶抑制剂,包括尼达尼布和橙皮苷的产率超过 76%。用于合成的起始化合物也很容易以良好的收率获得。3-溴吲哚是通过三步合成法从相应的靛红制备的,平均总产率为 65%,或者通过羟吲哚的直接溴化(产率为 65-86%)。起始N- (4-哌啶-1-基甲基-苯基)-硫代苯甲酰胺通过相应的苯甲酰苯胺以 86% 的收率和N-甲基-N-(4-硫代苯甲酰氨基苯基)-2-(4-甲基哌嗪-1-基)乙酰胺通过相应苯胺与二硫代苯甲酸甲酯的硫代酰化以86%的产率制备。