作者:Tobias Burckhardt、Klaus Harms、Ulrich Koert
DOI:10.1021/ol302121w
日期:2012.9.7
A convergent total synthesis of the structurally unprecedented alkaloid lodopyridone was achieved using a cross-coupling of an iodopyridone fragment with a quinolinethiazolylstannane. Key features of the syntheses of the pentasubstituted 4-pyridone were a regioselective bromination of a 4-pyridone derived from kojic acid, a subsequent Cu-mediated introduction of the thioether, and a directed lithiation/iodination
使用碘代吡啶酮片段与喹啉基噻唑基锡烷的交叉偶联,实现了结构空前的生物碱碘吡啶酮的聚合全合成。五取代的4-吡啶酮的合成的关键特征是衍生自曲酸的4-吡啶酮的区域选择性溴化,随后的铜介导的硫醚的引入以及定向的锂化/碘化步骤。二溴噻唑和喹啉基锌试剂的化学选择性Negishi交叉偶联用于组装氯喹啉乙唑部分。