1-((2S,4R,5R)-2-((tert-butyldimethylsilyloxy)methyl)-4,5-bis(2-hydroxyethyl)-piperidin-1-yl)-2,2,2-trifluoroethanone

2-((2S,4R,5R)-2-((tert-butyldimethylsilyloxy)methyl)-5-(2-hydroxyethyl)-1-(2,2,2-trifluoroacetyl)piperidin-4-yl)ethyl acetate

2-((3R,4R,6S)-6-((tert-butyldimethylsilyloxy)methyl)-4-(2-hydroxyethyl)-1-(2,2,2-trifluoroacetyl)piperidin-3-yl)ethyl acetate

2-((2S,4R,5R)-2-(((tert-butyldimethylsilyl)oxy)methyl)-1-(2,2,2-trifluoroacetyl)-5-vinylpiperidin-4-yl)ethyl acetate

1-((2S,4R,5R)-2-((tert-butyldimethylsilyloxy)methyl)-4-(2-hydroxyethyl)-5-vinylpiperidin-1-yl)-2,2,2-trifluoroethanone