Pd-Catalyzed Carbonylative Lactamization: A Novel Synthetic Approach to FR900482
作者:Barry M. Trost、Michael K. Ameriks
DOI:10.1021/ol049583y
日期:2004.5.1
An asymmetric synthesis of the benzazocine core of FR900482 has been achieved in 15 steps from 3,5-dinitro-p-toluic acid. Key features of the synthesis include an enantioselective N-methylephedrine-mediated zinc acetylide addition to a highly enolizable arylacetaldehyde and a novel Pd-catalyzed carbonylative lactamization to form an eight-membered ring.