3,5-Disubstituted Piperidine Derivatives—A Scalable Route to All Four Stereoisomers
作者:J. Constanze D. Hartwieg、Jan W. Priess、Heiner Schütz、Dominik Rufle、Claudio Valente、Christophe Bury、Luigi La Vecchia、Eric Francotte
DOI:10.1021/op500170d
日期:2014.9.19
acid derivative were prepared on preparative scale in high enantiomeric purity. The piperidine core structure was formed by catalytic hydrogenation of the corresponding pyridine derivatives. After Boc-protection, the resulting cis/trans mixture was separated by preparative normal phase chromatography into the pure cis and pure trans racemates. Subsequent preparative separation of those racemates by