tert-Butyl-((2S,5R,6S)-6-isopropoxy-5-methyl-tetrahydro-pyran-2-ylmethoxy)-diphenyl-silane

(8R,9S,10R)-11-Benzenesulfonyl-1,9-bis-(tert-butyl-dimethyl-silanyloxy)-8,10-dimethyl-undec-3-yn-5-one

(2R,3S,4R)-1-{2-[(1S,2S,5S)-2-(tert-Butyl-dimethyl-silanyloxy)-1-methyl-5-((2R,3R,6S)-3-methyl-1,7-dioxa-spiro[5.5]undec-2-yl)-hexyl]-[1,3]dithian-2-yl}-3-methoxy-5-methyl-hexane-2,4-diol