(2S,3R,4R,5R,6R)-3-azido-6-(((tert-butyldiphenylsilyl)oxy)methyl)-5-hydroxy-2-(phenylthio)tetrahydro-2H-pyran-4-yl acetate

phenyl 3-O-acetyl-4-azido-4-deoxy-6-O-t-butyldiphenylsilyl-1-thio-β-D-galactopyranoside

phenyl 4-O-acetyl-2-azido-2-deoxy-6-O-t-butyldiphenylsilyl-1-thio-β-D-galactopyranoside