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。