Convergent Total Syntheses of (−)‐Rubriflordilactone B and (−)‐
<i>pseudo</i>
‐Rubriflordilactone B
作者:Mujahid Mohammad、Venkaiah Chintalapudi、Jeffrey M. Carney、Steven J. Mansfield、Pollyanna Sanderson、Kirsten E. Christensen、Edward A. Anderson
DOI:10.1002/anie.201908917
日期:2019.12.9
highly convergent strategy for the synthesis of the natural product (-)-rubriflordilactone B, and the proposed structure of (-)-pseudo-rubriflordilactone B, is described. Late stage coupling of diynes containing the respective natural product FG rings with a common AB ring aldehyde precedes rhodium-catalyzed [2+2+2] alkyne cyclotrimerization to form the natural product skeleton, with the syntheses completed
描述了天然产物 (-)-rubriflordilactone B 的合成高度收敛策略,以及 (-)-pseudo-rubriflordilactone B 的拟议结构。含有各自天然产物 FG 环的二炔与常见的 AB 环醛进行后期偶联,然后进行铑催化的 [2+2+2] 炔环三聚反应,形成天然产物骨架,只需进一步操作即可完成合成。这项工作解决了假红原二内酯 B 身份的不确定性,并为进一步的合成和生物学研究提供了一个强大的平台。