作者:Juan C. Estevez、Antony J. Fairbanks、George W.J. Fleet
DOI:10.1016/s0040-4020(98)00837-0
日期:1998.10
Dehydration of both γ- and δ- hexonolactones, either by intramolecular nucleophilicdisplacement of triflate leaving groups at C-2, or by Mitsunobu type displacement of the OH-6, provides access to bicyclic lactones which contain tetrahydropyran rings. Reduction or nucleophilic ring opening of these bicyclic lactones furnishes polyfunctionalised tetrahydropyrans in good yield.