Fang, J.-M.J.-M.Fang2009-02-212018-07-102009-02-212018-07-101996http://ntur.lib.ntu.edu.tw//handle/246246/137136en-USSynthesis of Natural ??-Lactones and a Dilactone Pyrrolizidine Alkaloid via the Reactions of 2-Propenyl-1,3-dithianejournal article