allyl 6-O-benzyl-2-O-(2-butenyl)-α-D-galactopyranoside

allyl 3,6-di-O-benzyl-2-O-(2-butenyl)-α-D-galactopyranoside

allyl 2-O-benzoyl-6-O-benzyl-3,4-O-isopropylidene-α-D-galactopyranoside

1-propenyl 2-O-benzoyl-3,6-di-O-benzyl-α-D-galactopyranoside