The diastereoselective synthesis of functionalised isoxazolidines using a Cope elimination/intramolecular nitrone cycloaddition strategy
作者:Ian A O'Neil、V.Elena Ramos、Gemma L Ellis、Ed Cleator、Alan P Chorlton、David J Tapolczay、S.Barret Kalindjian
DOI:10.1016/j.tetlet.2004.03.041
日期:2004.4
Functionalised hydroxylamine derivatives of (S)-prolinol prepared by a Cope elimination have been found to undergo oxidation to the nitrone either in the presence of air or a catalytic quantity of TPAP. These undergo intramolecular cycloaddition to give tricyclic isoxazolidines with high diastereoselectivity.