(3aR,6R,7R,7aR)-6-(4-(p-methoxybenzyloxy)but-2-ynyl)-7-(tert-butyldimethylsilyl)oxy-tetrahydro-2,2-dimethyl-3aH-[1,3]dioxolo[4,5-c]pyran

(3aR,6R,7R,7aS)-6-(4-(p-methoxybenzyloxy)but-2-ynyl)-tetrahydro-2,2-dimethyl-3aH-[1,3]dioxolo[4,5-c]pyran-7-ol

(3aR,6R,7S,7aS)-6-(4-(p-methoxybenzyloxy)but-2-ynyl)-tetrahydro-2,2-dimethyl-3aH-[1,3]dioxolo[4,5-c]pyran-7-ol

(3aR,6R,7S,7aR)-6-((Z)-4-tert-butyldimethylsilyloxy-2-iodobut-2-enyl)-7-triethylsilyloxy-tetrahydro-2,2-dimethyl-3aH-[1,3]dioxolo[4,5-c]pyran

(E)-(S)-2-tert-Butoxycarbonylamino-6-(tert-butyl-dimethyl-silanyloxy)-4-((3aR,6R,7S,7aR)-2,2-dimethyl-7-triethylsilanyloxy-tetrahydro-[1,3]dioxolo[4,5-c]pyran-6-ylmethyl)-hex-4-enoic acid methyl ester