Radical Cyclisation Reactions Leading to Polycyclics Related to the Amaryllidaceae and Erythrina Alkaloids
作者:Andrew F Parsons、David A.J Williams
DOI:10.1016/s0040-4020(00)00646-3
日期:2000.9
precursors bearing unsaturated side-chains in tandemcyclisations. An octahydroindolone has been converted to the ring skeleton of γ-lycorane using samarium(II) iodide while reaction with manganese(III) acetate has been shown to yield a novel tetracyclic ring system bearing a 7-membered ring. Finally, a newtandemcyclisation of a cyclohexenone aryl halide has been shown to provide a quick approach to a 5