(Z)-(2S,8R,9S,12R)-9-(tert-Butyl-dimethyl-silanyloxy)-12-(tert-butyl-dimethyl-silanyloxymethyl)-2-((4S,6R)-2,2-di-tert-butyl-6-methyl-[1,3,2]dioxasilinan-4-yl)-5-(N',N'-dimethyl-hydrazino)-8-methyl-tetradec-5-en-7-one

(2S,3R,4S,6R,8S,9S)-4-benzoyloxy-3,9-dimethyl-8-{(R)-2-[(tert-butyldimethyl-silyl)oxy]-1-propyl}-2-[(R)-3-ethyl-3-formylpropyl]-1,7-dioxaspiro[5.5]undecane

(E)-(4S,5R,6S)-5-(tert-Butyl-dimethyl-silanyloxy)-4,6-dimethyl-7-oxo-non-2-enoic acid (2S,3R,4S,6R,8S,9S)-8-[(R)-2-(tert-butyl-dimethyl-silanyloxy)-propyl]-2-((E)-(R)-3-ethyl-5-iodo-pent-4-enyl)-3,9-dimethyl-1,7-dioxa-spiro[5.5]undec-4-yl ester

(2S,3S,4S,6R,8S,9S)-4-[(diethylphosphonoacetyl)oxy]-3,9-dimethyl-8-[(R)-2-[(tert-butyldimethylsilyl)oxy]-1-propyl]-2-[(R)-3-ethyl-5-(E)-iodo-4-pentyl]-1,7-dioxaspiro[5.5]undecane

(2S,3S,4S,6R,8S,9S)-3,9-dimethyl-8-{(R)-2-[(tert-butyldimethylsilyl)-oxy]-1-propyl}-2-[(R)-3-ethyl-5-(E)-iodo-4-pentenyl]-1,7-dioxaspiro[5.5]undecan-4-ol

(2S,3S,4S,6R,8S,9S)-3,9-dimethyl-8-{(R)-2-[(tert-butyldimethylsilyl)oxy]-1-propyl}-2-{(R)-3-[(tert-butyldimethylsilyl)oxy]methyl-1-pentyl}-1,7-dioxaspiro[5.5]undecan-4-one

(2S,3R,4S,6R,8S,9S)-4-benzoyloxy-3,9-dimethyl-8-{(R)-2-[(tert-butyldimethylsilyl)-oxy]-1-propyl}-2-[(R)-3-ethyl-5-(E)-iodo-4-pentenyl]-1,7-dioxaspiro[5.5]undecane

(2S,3R,6R,8S,9S)-3,9-dimethyl-8-[(R)-2-hydroxy-1-propyl]-2-{(R)-3-[(tert-butyldimethylsilyl)oxymethyl]-1-pentyl}-1,7-dioxaspiro[5.5]undecan-4-one

(2S,3R,6R,8S,9S)-3,9-dimethyl-8-[(R)-2-hydroxy-1-propyl]-2-[(R)-3-hydroxymethyl-1-pentyl]-1,7-dioxaspiro[5.5]undecan-4-one

(2S,3R,4S,6R,8S,9S)-4-benzoyloxy-3,9-dimethyl-8-{(R)-2-[(tert-butyldimethylsilyl)oxy]-1-propyl}-2-[(R)-3-hydroxymethyl-1-pentyl]-1,7-dioxaspiro[5.5]undecane