799830-32-3

Upstream product

• 4163-60-4 β-D-galactose peracetate 

Downstream Products

• 799830-34-5 trifluoro-methanesulfonic acid 4-allyloxycarbonyloxy-6-allyloxycarbonyloxymethyl-2-[4,6-bis-benzyloxy-2-benzyloxymethyl-5-(1,3-dioxo-1,3-dihydro-isoindol-2-yl)-tetrahydro-pyran-3-yloxy]-5-trifluoromethanesulfonyloxy-tetrahydro-pyran-3-yl ester 
• 799830-36-7 Acetic acid (2S,3S,4S,5R,6R)-5-acetoxy-4-allyloxycarbonyloxy-6-allyloxycarbonyloxymethyl-2-[(2R,3S,4R,5R,6R)-4,6-bis-benzyloxy-2-benzyloxymethyl-5-(1,3-dioxo-1,3-dihydro-isoindol-2-yl)-tetrahydro-pyran-3-yloxy]-tetrahydro-pyran-3-yl ester 

Relevant academic research and scientific papers

An improved method for synthesizing antennary β-D-mannopyranosyl disaccharide units

The merits of an indirect protecting method for hydroxyl groups using allyl groups via allyloxycarbonyl groups in the synthesis of antennary β-D-mannopyranosyl disaccharides from β-D-galactopyranosyl disaccharides were studied. Regioselective allyloxycarbonylation and conversion reactions involving simultaneous double SN2 nucleophilic substitution at C-2′ and C-4′ of benzyl O-[β-D-galactopyranosyl]-(1-4)-3,6- di-O-benzyl-2-deoxy-2-N-phthalimido-β-D-glucopyranoside were examined for comparison with the direct allylation method. The required β-D- mannopyranosyl disaccharide having proper protecting groups was obtained using this indirect method in 52% yield. In contrast, the reported direct allylation method using methyl O-(β-D-galactopyranosyl) disaccharide gave the corresponding β-D-mannopyranosyl disaccharide in only 7.5% yield.