Abstract Cleavage of the isopropylidene group of p-nitrophenyl 3-O-benzoyl-4, 6-O- isopropylidene-β-d-galactopyranoside afforded p-nitrophenyl 3-O-benzoyl-β-d- galactopyranoside (1). Compound 1 was converted into its 4, 6-O-benzylidene derivative ( ...