{(3R,4R,5R,7S)-5-[(1E,3E)-5-((2S,3S,5R,6R)-5-Azido-3,6-dimethyl-tetrahydro-pyran-2-yl)-3-methyl-penta-1,3-dienyl]-7-methyl-1,6-dioxa-spiro[2.5]oct-4-yloxy}-triethyl-silane

(6S)-butynyl-(2R,5S)-dimethyl-tetrahydropyran-(3S)-ol

(2R)-ethynyl-(6R)-iodomethyl-4-methylene-tetrahydropyran-(3S)-ol

(6R)-(t-butyldimethylsilanyloxymethyl)-(2R)-ethynyl-(3R)-(triisopropylsilanyloxy)-tetrahydropyran-4-one

(6R)-(tert-butyldimethylsilanyloxymethyl)-(2R)-ethynyl-(3R)-hydroxy-tetrahydropyran-4-one