273384-34-2

Upstream product

• 273384-26-2 allyl 2,3,4-tri-O-acetyl-α-L-rhamnopyranosyl-(1->4)-2,3,6-tri-O-benzyl-β-D-galactopyranoside 
• 273384-30-8 allyl 4-O-benzyl-2,3-O-isopropylidene-α-L-rhamnopyranosyl-(1->4)-2,3,6-tri-O-benzyl-β-D-galactopyranoside 
• 273384-28-4 allyl 2,3-O-isopropylidene-α-L-rhamnopyranosyl-(1->4)-2,3,6-tri-O-benzyl-β-D-galactopyranoside 
• 273384-27-3 allyl α-L-rhamnopyranosyl-(1->4)-2,3,6-tri-O-benzyl-β-D-galactopyranoside 
• 150969-29-2 allyl 2,3,6-tri-O-benzyl-β-D-galactopyranoside 
• 113893-72-4 2,3,4-tri-O-acetyl-L-rhamnopyranosyl trichloroacetimidate 
• 100-39-0 benzyl bromide 
• 273384-32-0 allyl 4-O-benzyl-α-L-rhamnopyranosyl-(1->4)-2,3,6-tri-O-benzyl-β-D-galactopyranoside 

Downstream Products

• 273384-36-4 allyl 2-O-acetyl-3,4-di-O-benzyl-α-L-rhamnopyranosyl-(1->4)-2,3,6-tri-O-benzyl-β-D-galactopyranoside 

Relevant academic research and scientific papers

Synthesis of a model compound related to an anti-ulcer pectic polysaccharide

A stereocontrolled synthesis of the model compound for an anti-ulcer active polysaccharide (Bupleuran 2IIc) is described. Glycosidation of the disaccharide acceptor, 2-O-acetyl-3-O-benzyl-4-O-(p-methoxybenzyl)-α-L-rhamnopyranosyl-(1→4)-2,3,6-tri-O-benzyl-α-D-galactopyranosyl trichloroacetimidate, with the disaccharide receptor, allyl 3,4-di-O-benzyl-α-L-rhamnopyranosyl-(1→4)-2,3,6-tri-O-benzyl-β-D-galactopyranoside, using silver triflate (AgOTf) as a promoter gave the desired tetrasaccharide derivative, which was transformed into the acidic tetrasaccharide, corresponding to a segment of the rhamnogalacturonan (Bupleuran 2IIc) polysaccharide, propyl α-L-Rha-(1→4)-α-D-GalA-(1→2)-α-L-Rha-(1→4)-β-D-GalA, via removal of the corresponding ether and ester protecting groups, followed by oxidation. Copyright (C) 2000 Elsevier Science Ltd.