(2R,3R,4R,5S)-4-(formylmethyl)-2,3-(isopropylidenedioxy)-5-<(1R)-1,2-(isopropylidenedioxy)ethyl>-4-vinyltetrahydrofuran

(2R,3R,4R,5S)-5-<(1R)-1-hydroxy-2-(trimethylacetoxy)ethyl>-2,3-(isopropylidenedioxy)-4-methyl-4-vinyltetrahydrofuran

(2R,3R,4R,5S)-4-(2-hydroxyethyl)-2,3-(isopropylidenedioxy)-5-<(1R)-1,2-(isopropylidenedioxy)ethyl>-4-vinyltetrahydrofuran

(2R,3R,4R,5S)-5-<(1R)-1,2-dihydroxyethyl>-2,3-(isopropylidenedioxy)-4-methyl-4-vinyltetrahydrofuran

2,2,2-Trichloro-N-[(3aR,5S,6S,6aR)-5-((R)-2,2-dimethyl-[1,3]dioxolan-4-yl)-6-formyl-2,2-dimethyl-tetrahydro-furo[2,3-d][1,3]dioxol-6-yl]-acetamide