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 Cope elimination. These undergo reverse Cope elimination 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 Cope elimination in the synthesis of heterocyclic systems by incorporation of the lactone and lactam
(S)-脯氨酸和(R)-胡椒酸的官能化羟胺衍生物已经使用Cope消除法制备。它们通过反向Cope消除到一个侧链双键上,得到含有三个连续手性中心的双环内酰胺和内酯N-氧化物,这通过结合内酯和内酰胺结构扩展了反向Cope消除在杂环体系合成中的范围和适用性。图案。