(2R,5S)-dimethyl-(6S)-[4-(trimethylsilanyl)-but-3-ynyl]-tetrahydropyran-(3S)-ol

(3R)-hydroxy-(2R,5R)-dimethyl-(6S)-[4-(trimethylsilanyl)-but-3-ynyl]-tetrahydropyran-4-one

(4R)-triethylsilyloxy-(5R)-ethynyl-(7R)-iodomethyl-1,6-dioxa-spiro[2,5]octane

(3R,6R)-dimethyl-4-(triethylsilanyloxy)-(2S)-[4-(trimethylsilanyl)-but-3-ynyl]-3,6-dihydro-2H-pyran

(((3R,4R,5R,7R)-5-((1E,3E)-5-((2S,3S,5R,6R)-5-azido-3,6-dimethyltetrahydro-2H-pyran-2-yl)-3-methylpenta-1,3-dien-1-yl)-7-(iodomethyl)-1,6-dioxaspiro[2.5]octan-4-yl)oxy)triethylsilane