(2R,3S,4S)-5-(tert-butyldimethylsiloxy)-3-(4-methoxybenzyloxy)-2,4-dimethylpentanal

(2R,3S,4S)-3,5-bis(tert-butyldimethylsilyloxy)-2,4-dimethylpentan-1-ol

(2R,3S,4S,5S,6S)-7-(tert-Butyl-dimethyl-silanyloxy)-3-hydroxy-5-(4-methoxy-benzyloxy)-2,4,6-trimethyl-heptanoic acid ethyl ester

(2S,3S,4S)-3-(tert-butyldimethylsiloxy)-5-(tert-butyldiphenylsiloxy)-2,4-dimethylpentanol

ethyl (2R,3S,4R,5S,6S)-2-bromo-7-(tert-butyldimethylsiloxy)-3-hydroxy-5-(4-methoxybenzyloxy)-2,4,6-trimethylheptanoate