Stereoselective Synthesis of 2,6-Disubstituted 3-Piperidinols: Application to the Expedient Synthesis of (+)-Julifloridine
作者:Alexandre Lemire、André B. Charette
DOI:10.1021/ol051022z
日期:2005.6.1
[reaction: see text] The asymmetricsynthesis of 2,6-disubstituted 3-piperidinols having a 2,3-cis and 2,6-trans relative stereochemistry was accomplished in three steps using the following sequence: stereocontrolled nucleophilic addition of an organomagnesium reagent to a chiral pyridinium salt; monohydrogenation of the resulting 2-substituted 1,2-dihydropyridine; and a one-pot, highly diastereoselective