Pyridine-3,4-dicarboximide as starting material for the total synthesis of the natural product eupolauramine and its isomer iso-eupolauramine endowed with anti-tubercular activities
作者:Gildas Perdigão、Céline Deraeve、Giorgia Mori、Maria Rosalia Pasca、Geneviève Pratviel、Vania Bernardes-Génisson
DOI:10.1016/j.tet.2015.01.034
日期:2015.3
of the key intermediate aza-isoindolinone 4a/4b, which could be ready obtained from pyridine-3,4-dicarboximide was described. This approach was valorized in the total synthesis of the natural product eupolauramine 7b and in the first synthesis of the position analog iso-eupolauramine 7a, which was obtained after 6 steps in an overall yield of 13%. The developed strategy represents the first synthetic
描述了直接和方便的合成途径,用于制备关键中间体氮杂-异吲哚满酮4a / 4b,该中间体可从吡啶-3,4-二羧酸二酰亚胺中直接制得。在天然产物eupolauramine 7b的全合成和位置类似物异-eupolauramine 7a的第一个合成中,均采用这种方法,经过6个步骤获得,总产率为13%。所开发的策略代表了第一种合成方法,该方法采用了已嵌入氮杂菲内酰胺骨架的吡啶和内酰胺循环(分别为循环D和C)的原料。这些化合物,主要是新的非天然产物,对结核分枝杆菌的生长表现出良好的抑制活性。