[4-acetoxy-8-(2-{2-acetoxy-5-[10-(tert-butyl-dimethyl-silanyloxy)-8-formyl-4-methoxy-1,7-dioxa-spiro[5.5]undec-2-yl]-1,3-dimethyl-4-oxo-pentyl}-allyl)-10-methyl-10-triethylsilanyloxy-1,7-dioxa-spiro[5.5]undec-2-yl]-acetic acid allyl ester

(2R,6S,8R,10S)-10-(tert-Butyl-dimethyl-silanyloxy)-2-[(R)-4-(tert-butyl-dimethyl-silanyloxy)-3-methyl-2-methylene-butyl]-8-(4-methoxy-benzyloxymethyl)-1,7-dioxa-spiro[5.5]undecan-4-one

(2R,4S,6R,8R,10S)-4-(tert-Butyl-dimethyl-silanyloxy)-8-[(R)-4-(tert-butyl-dimethyl-silanyloxy)-3-methyl-2-methylene-butyl]-10-methoxy-2-(4-methoxy-benzyloxymethyl)-1,7-dioxa-spiro[5.5]undecane

(2R,4S,6R,8R,10S)-10-(tert-Butyl-dimethyl-silanyloxy)-2-[(R)-4-(tert-butyl-dimethyl-silanyloxy)-3-methyl-2-methylene-butyl]-8-(4-methoxy-benzyloxymethyl)-1,7-dioxa-spiro[5.5]undecan-4-ol

(R)-3-[(2R,4S,6R,8R,10S)-10-(tert-Butyl-dimethyl-silanyloxy)-4-methoxy-8-(4-methoxy-benzyloxymethyl)-1,7-dioxa-spiro[5.5]undec-2-ylmethyl]-2-methyl-but-3-en-1-ol