(2S,4S,6R,8R,10S)-10-(tert-butyldimethylsilanyloxy)-4-methoxy-8-triisopropylsilanyloxymethyl-1,7-dioxaspiro[5.5]undec-2-ylmethyl 2,2-dimethylpropionate

(2S)-2-benzyloxy-6-hydroxy-4-oxo-7-[(2R,4R,6R)-(2-phenyl-6-triisopropylsilanyloxymethyl-[1,3]dioxan-4-yl)]heptyl 2,2-dimethylpropionate

1-[(2S,4S,6R,8R,10S)-10-(tert-butyldimethylsilanyloxy)-4-methoxy-8-triisopropylsilanyloxymethyl-1,7-dioxaspiro[5.5]undec-2-yl]-butan-2-one

[(2S,4S,6R,8R,10S)-10-(tert-Butyl-dimethyl-silanyloxy)-4-methoxy-8-triisopropylsilanyloxymethyl-1,7-dioxa-spiro[5.5]undec-2-yl]-acetaldehyde