Exploratory Studies en Route to 5-Alkyl-Hyacinthacines: Synthesis of 5-epi-(-)-Hyacinthacine A3 and (-)-Hyacinthacine A3 - Hu, Xiang-Guo; Jia, Yue-Mei; Xiang, Junfeng; Yu, Chu-Yi (Synlett, 2010)