SEARCH Articles Figures Tables 1,3-O-benzylidene 3,5-O-Benzylidenation Bromosuccinimide D 2,4-O-benzylidene D l,4-anhydro-benzylidene D-Mannopyranose L benzylidene L-Mannopyranose Mannopyranose N benzylidene N-Bromosuccinimid N-Bromosuccinimide N-Bromosuccinimide reaction