(2S,3R,5R,6R)-5,6-dimethoxy-5,6-dimethyl-2-dodecane-3-(2',2'-gem-dibromo)ethenyl-[1,4]-dioxane

(2S,5S)-2-(tert-butyldiphenylsilyloxymethyl)-5-(1-benzyloxyprop-2-ynyl)tetrahydrofuran

N-{(2S,3R,4R)-4-[(S)-2-(tert-Butyl-dimethyl-silanyloxy)-4-oxo-butyl]-2-methyl-5-oxo-tetrahydro-furan-3-yl}-2,2,2-trifluoro-N-phenyl-acetamide

(2'S,3R,4R,5S)-3-(4'-benzyloxy-2'-tert-butyldimethylsilyloxy)butyl-4-N-phenylamino-2,3,4,5-tetrahydro-5-methylfuran-2-one

(2'R,4R,5S)-3-(4'-benzyloxy-2'-(tert-butyldimethylsilyloxy)butylidene)-4-N-phenylaminodihydro-5-methylfuran-2-one