A systematic approach to the synthesis of androstane-based 3,17-dicarboxamides (homo- and mixed dicarboxamides) via palladium-catalyzed aminocarbonylation
作者:Mercédesz Kiss、Noémi Pálinkás、Attila Takács、Sándor Mahó、László Kollár
DOI:10.1016/j.steroids.2013.02.013
日期:2013.7
derivatives possessing various amine moieties were synthesized under mild conditions using palladium-catalyzed homogeneous aminocarbonylation as key reaction. Compounds containing the corresponding iodoalkene functionalities, i.e., 17-iodo-16-ene and 3-iodo-3,5-diene structural motifs, were used in the aminocarbonylation and the N-nucleophiles were varied systematically. Three amines, such as tert-butylamine
使用钯催化的均相氨基羰基化作为关键反应,在温和条件下合成了具有各种胺部分的 3,17-Dicarboxamido-androst-3,5,16-triene 衍生物。含有相应碘代烯烃官能团的化合物,即 17-iodo-16-ene 和 3-iodo-3,5-diene 结构基序,用于氨基羰基化,并且系统地改变 N-亲核试剂。三种胺,如叔丁胺、哌啶和丙氨酸甲酯在氨基羰基化中用作 N-亲核试剂。3,17-二甲酰胺的所有变体均使用该方法合成。Androst-4-ene-3,17-dione 用作原料。多步合成的合成策略基于三个不同反应的系统变异和连续使用: