From Amino Acids to Enantiopure Bicyclic Isoxazolidinylpyridin-4(1H)-ones through Intramolecular Nitrone Cycloadditions
作者:Roberto Romeo、Daniela Iannazzo、Anna Piperno、Maria A. Chiacchio、Antonino Corsaro、Antonio Rescifina
DOI:10.1002/ejoc.200400847
日期:2005.6
Homochiral bicyclicisoxazolidinylpyridin-4(1H)-ones have been synthesised by an intramolecularnitronecycloaddition process, starting from homochiral β-amino acids. Stereoselection at C2 or C3 of the acyclic substrate appears to give the best results in the control of the stereochemistry of the new formed chiral centres. The synthetic approach has been further directed towards functionalised piperidones