1554556-59-0

Upstream product

• 56245-60-4 ethyl 1-thio-β-D-galactopyranoside 
• 1554556-49-8 ethyl 2,4,6-tri-O-benzyl-3-O-p-methoxybenzyl-1-thio-β-D-galactopyranoside 
• 99409-33-3 ethyl 4,6-O-benzylidene-2-deoxy-2-N-phthalamido-1-thio-β-Dglucopyranoside 

Downstream Products

• 1554556-61-4 2-azidoethyl (2,4,6-tri-O-benzyl-α-D-galactopyranosyl)-(1→3)-(4,6-O-benzylidene-2-deoxy-2-N-phthalimido-β-D-glucopyranosyl)-(1→2)-(3-O-benzyl-4,6-O-benzylidene-α-D-glucopyranosyl)-(1→6)-2,3,4-tri-O-benzyl-α-D-glucopyranoside 

Relevant academic research and scientific papers

Convergent synthesis of a pentasaccharide repeating unit corresponding to the cell wall O-antigen of Salmonella enterica O44

A convergent synthetic strategy has been developed for the synthesis of a pentasaccharide fragment corresponding to the O-antigen of Salmonella enterica O44 strain. An intermediate tetrasaccharide derivative was prepared by a [2+2] block glycosylation of two disaccharide derivatives. The p-methoxybenzyl (PMB) group has been used as the in situ temporary protecting group minimizing the number of functional group manipulation steps. The application of the armed-disarmed glycosylation concept reduced the number of steps in the synthetic strategy. The glycosylation steps were highly stereoselective and high yielding.