SEARCH Articles Figures Tables 1,3-O-benzylidene 3,5-O-Benzylidenation A -benzylidene A methyl 4,6-benzylidene D 2,4-O-benzylidene D-Galactopyranoside Galactopyranoside Methyl /?-D-galactopyranoside Methyl 3,4-0-benzylidene Methyl 3,4-O-benzylidene