Medium ring stereocontrol in the functionalisation of eight-membered lactones
作者:Edward A. Anderson、Andrew B. Holmes、Ian Collins
DOI:10.1016/s0040-4039(99)01988-7
日期:2000.1
via Claisenrearrangement. Application of medium ring stereocontrol to a γ,δ-unsaturated eight-membered ring lactone prepared by this route enabled the overall diastereoselective functionalisation of all but one of the ring positions. A comparison of the ring-induced selectivity was made with that of the corresponding acyclic hydroxy ester which exhibited an overall reversal of stereoselectivity. This