[4-(tert-butyldiphenylsilanyloxy)-6-(2-methoxy-4-oxobutyl)-tetrahydro-2H-pyran-2-yl]acetonitrile

{(2S,4S,6R)-4-(tert-butyldiphenylsilanyloxy)-6-[(R)-4-hydroxy-2-methoxybutyl]-tetrahydro-2H-pyran-2-yl}acetonitrile

{(2S,4S,6R)-6-[(R)-4-benzyloxy-2-methoxybutyl]-4-(tert-butyldiphenylsilanyloxy)tetrahydro-2H-pyran-2-yl}acetonitrile

(2S,5S,6R)-6-{(2S)-3-[(2R,4S,6S)-4-(tert-butyldiphenylsilanyloxy)-6-cyanomethyltetrahydro-2H-pyran-2-yl]-2-methoxypropyl}-5-methyl-5,6-dihydro-2H-pyran-2-carboxylic acid isopropyl ester