acetic acid (2R,3R,4R,5R)-4,5-diacetoxy-2-acetoxymethyl-1-acetyl-piperidin-3-yl ester

methyl (1S,4S,5R,6S)-5-((tert-butyldimethylsilyl)oxy)-1-(dimethyl(phenyl)silyl)-3-tosyl-7-oxa-3-azabicyclo[4.1.0]heptane-4-carboxylate

(2R,3R,4S,5R)-acetic acid 4-acetoxy-1-acetyl-3-(tert-butyl-dimethyl-ilanyloxy)-5-(dimethy-phenyl-silanyl)-piperidin-2-ylmethyl ester