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

{(2R,4S,6S,8S,10S)-4-Acetoxy-8-[(R)-4-(tert-butyl-dimethyl-silanyloxy)-3-methyl-2-methylene-butyl]-10-hydroxy-10-methyl-1,7-dioxa-spiro[5.5]undec-2-yl}-acetic acid allyl ester

Toluene-4-sulfonic acid (2R,4S,6S,8S,10S)-8-[(R)-4-(tert-butyl-dimethyl-silanyloxy)-3-methyl-2-methylene-butyl]-4,10-dihydroxy-10-methyl-1,7-dioxa-spiro[5.5]undec-2-ylmethyl ester

(8S,10R,12S,15S)-15-[(R)-4-(tert-Butyl-dimethyl-silanyloxy)-3-methyl-2-methylene-butyl]-10-(4-methoxy-benzyloxymethyl)-9,14-dioxa-1,5-dithia-dispiro[5.1.5.3]hexadecan-12-ol

(R)-1-[(4S,6R)-6-(4-Methoxy-benzyloxymethyl)-2,2-dimethyl-[1,3]dioxan-4-yl]-9-methyl-8-methylene-6,10-bis-triethylsilanyloxy-dec-3-yn-2-one