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