Synthesis of some branched trisaccharides using photolabile o-nitro-benzylidene acetals as temporary protecting groups
Abstract
Methyl 2-O-(β-D-glucopyranosyl)-3-O-(β-D-glucopyranosyl)-α-L-fucopyranoside (4), methyl 2-O-(β-D-galactopyrannosyl)-3-O-(β-D-galactopyraosyl)-α-L-fucopyranoside (5), and methyl 3-O-(β-D-glucopyranosyl)-4-O-(β-D-glucopyranosyl)-α-L-rhamopyranoside (9) have been synthesised using o-nitrobenzylidene acetals as photosensitive temporary protecting groups.