Synthesis of (−)-Epi-Indolactam V by an Intramolecular Buchwald–Hartwig C–N Coupling Cyclization Reaction
作者:Michele Mari、Francesca Bartoccini、Giovanni Piersanti
DOI:10.1021/jo4013767
日期:2013.8.2
The synthetic efforts toward the concise synthesis of (−)-indolactam V from simple and commercially available starting materials using palladium- and copper-catalyzed intramolecular N-arylation strategy for the elaboration of the requisite nine-membered lactam ring as the key step are described. The incorporation of a turn-inducing structural element along the linear precursor was fundamental to achieve
描述了使用钯和铜催化的分子内N-芳基化策略从简单的可商购起始原料中简明合成(-)-吲哚内酰胺V的合成步骤,该合成过程详细阐述了必要的九元内酰胺环。 。沿线性前体引入诱导结构的元素对实现杂环化步骤以及获得正确的区域选择性和化学选择性至关重要。C-N偶联环化反应中的立体选择性本质是根据钯-酰胺基络合物形成的过渡态上的烯丙基应变最小化来解释的。同时,已经完成了(-)-表-吲哚内酰胺V及其对映异构体的合成。