{(2S,6R)-6-[2-(tert-Butyl-diphenyl-silanyloxy)-ethyl]-5,6-dihydro-2H-pyran-2-yl}-acetaldehyde

Acetic acid (2S,4R)-2-[2-(tert-butyl-diphenyl-silanyloxy)-ethyl]-3,4-dihydro-2H-pyran-4-yl ester

{(2R,6R)-6-[2-(tert-Butyl-diphenyl-silanyloxy)-ethyl]-tetrahydro-pyran-2-yl}-acetaldehyde

(2R,6R)-2-[(2S,4S,6R,7S)-2,4-Bis-(tert-butyl-dimethyl-silanyloxy)-6-(4-methoxy-benzyloxy)-7-methyl-non-8-ynyl]-6-[2-(tert-butyl-diphenyl-silanyloxy)-ethyl]-tetrahydro-pyran

(2S,8S,9R,11S,13S)-11,13-Bis-(tert-butyl-dimethyl-silanyloxy)-14-{(2R,6R)-6-[2-(tert-butyl-diphenyl-silanyloxy)-ethyl]-tetrahydro-pyran-2-yl}-2-methoxy-1,9-bis-(4-methoxy-benzyloxy)-8-methyl-tetradec-6-yn-5-ol