The synthesis of functionalised chiral bicyclic lactam and lactone N-oxides using a tandem Cope elimination/reverse Cope elimination protocol
作者:Gemma L. Ellis、Ian A. O’Neil、V. Elena Ramos、Ed Cleator、S. Barret Kalindjian、Alan P. Chorlton、David J. Tapolczay
DOI:10.1016/j.tetlet.2007.01.045
日期:2007.3
derivatives of (S)-proline and (R)-pipecolic acid have been prepared using a Copeelimination. These undergo reverse Copeelimination onto a pendant double bond to give bicyclic lactam and lactone N-oxides containing three contiguous chiral centres, this extends the scope and applicability of the reverse Copeelimination in the synthesis of heterocyclic systems by incorporation of the lactone and lactam