Ruthenium-Catalyzed Alkyne−Propargyl Alcohol Addition. An Asymmetric Total Synthesis of (+)-α-Kainic Acid
作者:Barry M. Trost、Michael T. Rudd
DOI:10.1021/ol034241y
日期:2003.5.1
A novel route to the neuroexcitatory amino acid, kainic acid, is developed. The key concept derives from a ruthenium-catalyzed cycloisomerization of a tethered alkyne-propargyl alcohol to form a cyclic 2-vinyl-1-acyl compound. A single stereocenter introduced by an asymmetric reduction of a ketone sets the stage for all the other stereocenters. A novel 1,6-addition of silyl cuprate serves to install
开发了一条通往神经兴奋性氨基酸海藻酸的新途径。关键概念源自束缚的炔烃-炔丙醇的钌催化环异构化反应,形成环状2-乙烯基-1-酰基化合物。由酮的不对称还原引入的单个立体中心为所有其他立体中心奠定了基础。新颖的1,6-加成的甲硅烷基铜酸酯用于在二烯末端安装羟基。[反应:看文字]