Stereocontrolled Preparation of a Nonpeptidal (−)-Spirobicyclic NK-1 Receptor Antagonist
作者:Peter E. Maligres、Marjorie M. Waters、Jaemoon Lee、Robert A. Reamer、David Askin、Michael S. Ashwood、Mark Cameron
DOI:10.1021/jo0157472
日期:2002.2.1
uted aryl group and a 2-phenyl-3-piperidone B. The stereochemistry in the spirobicyclic system bearing three chiral centers is initially set via a highly diastereoselective zinc-mediated coupling of the allylic bromide 23 to the opticallyactive ketopiperidine 3. The remaining benzylic asymmetric center is set by a diastereoselective hydroboration followed by cyclization to the spirobicyclic system