(2S,3S)-2-Allyl-3-hydroxy-4,4-dimethyl-1-((4S,5R)-4-methyl-2-oxo-5-phenyl-oxazolidin-3-yl)-heptane-1,5-dione

(1S,2S,5R,6S,7S)-2,6-Bis-(tert-butyl-dimethyl-silanyloxy)-3,3,5,7-tetramethyl-4-oxo-cycloundecanecarbaldehyde

(3S,4R,9S,10S,11R)-3,10-Bis-(tert-butyl-dimethyl-silanyloxy)-4-(tert-butyl-dimethyl-silanyloxymethyl)-2,2,9,11-tetramethyl-cycloundecanone