1-[(2S,3R,8R,9S)-3-(tert-butyldimethyl-silanyloxy)-9-ethyl-8-benzyloxy-2,3,4,7,8,9-hexahydro-oxonin-2-yl]-3-methylbutane-2,3-diol

[(2S,3S,8S,9S)-8-bromo-3-chloro-9-ethyl-2,3,4,7,8,9-hexahydro-oxonin-2-yl]-acetaldehyde

(2S,3S,8S,9S)-2-(8-bromo-3-chloro-9-ethyl-2,3,4,7,8,9-hexahydro-oxonin-2-yl)-ethanol

[(2S,3S,8S,9S)-2-(8-bromo-3-chloro-9-ethyl-2,3,4,7,8,9-hexahydro-oxonin-2-yl)-ethoxy]-tert-butyl-diphenyl-silane

(2S,3R,8S,9S)-9-[2-(tert-butyl-diphenyl-silanyloxy)-ethyl]-8-chloro-2-ethyl-2,3,4,7,8,9-hexahydro-oxonin-3-ol