作者:Markus Kalesse、Michael Lorenz、Nadine Bluhm
DOI:10.1055/s-0029-1216918
日期:2009.9
The aldol reaction is one of the most powerful and versatile methods in polyketide synthesis. Nevertheless, the subtle directing effects remain very often obscure and impede complex natural products syntheses. Here, we report studies on the pivotal aldol coupling employed in the spirangien synthesis. We identified conditions for the stereoselective formation of both stereoisomers in the C22-C23 aldol juncture of spirangien.
醛醇反应是多酮合成中最重要且多才多艺的方法之一。然而,微妙的导向效应往往非常模糊,阻碍了复杂天然产物合成的进程。在此,我们报告了在螺旋藻合成中关键的醛醇偶联反应的研究。我们确定了在螺旋藻C22-C23醛醇部位立体选择性地形成两种立体异构体的条件。