934591-89-6

Upstream product

• 934591-76-1 methyl (phenyl-5-acetamido-7,8,9-tri-O-acetyl-5-N,4-O-carbonyl-3,5-dideoxy-2-thio-D-glycero-α,β-D-galacto-non-2-ulopyranoside)onate 
• 53008-65-4 methyl 2,3,4-tri-O-benzyl-D-glucopyranoside 
• 1151942-33-4 C₂₆H₃₁NO₁₂S 
• 1235555-29-9 methyl (4-methylphenyl 5-amino-7,8,9-tri-O-acetyl-5-N,4-O-carbonyl-3,5-dideoxy-2-thio-D-glycero-β-D-galacto-non-2-ulopyranoside)onate 
• 1235555-31-3 methyl (4-methylphenyl 5-amino-5-N,4-O-carbonyl-3,5-dideoxy-2-thio-D-glycero-β-D-galacto-non-2-ulopyranoside)onate 
• 1246533-58-3 C₂₆H₃₁NO₁₂S 
• 6931-68-6 methyl 5-acetamido-2,4,7,8,9-penta-O-acetyl-3,5-dideoxy-D-glycero-D-galacto-2-nonulopyranosonate 
• 20298-35-5 N-acetylneuraminic acid methyl ester 
• 1071226-27-1 methyl (2-p-methylphenyl 5-acetamido-4,7,8,9-tetra-O-acetyl-3,5-dideoxy-D-glycero-α/β-D-galacto-2-thio-nonulopyranosid)onate 
• 118977-25-6 methyl (phenyl 5-acetamido-4,7,8,9-tetra-O-acetyl-3,5-dideoxy-2-thio-D-glycerol-β-D-galactonon-2-ulopyranoside)onate 
• 934591-79-4 methyl (phenyl 5-acetamido-7,8,9-tri-O-acetyl-5-N,4-O-carbonyl-3,5-dideoxy-2-thio-D-glycero-β-D-galacto-non-2-ulopyranoside)onate 

Downstream Products

• 934592-08-2 methyl 5-acetamido-3,5-dideoxy-D-glycero-β-D-galactonon-2-ulopyranosylonate-(2->6)-methyl 2,3,4-tri-O-benzyl-α-D-glucopyranoside 

Relevant academic research and scientific papers

α-Selective sialylations with N-acetyl-5-N,4-O-oxazolidinone- protected p-toluenethiosialoside

A novel N-acetyl-5-N,4-O-oxazolidinone-protected p-toluenethiosialoside was readily prepared from sialic acid and p-toluenethiol. It was demonstrated that the p-toluenethiosialoside could be successfully applied to the α-selective sialylations with variou

Donor-Reactivity-Controlled Sialylation Reactions

Although tremendous efforts have been made for the efficient preparation of sialosides, controlling the stereochemical outcome of sialylation reaction still remains one of the most challenging tasks due to the unique chemical structure of sialic acid. We developed a new strategy to statistically analyze the stereoselectivity of sialylation reactions on six types of p-tolyl thiosialosides in NIS/TfOH system using Relative Reactivity Value (RRV) as the indicator. Analysis of the reaction mechanism showed the formation of the relatively stable glycosyl bromide and glycosyl chloride intermediates from halide- and triflate-containing promotors in the absence of an acceptor. We found that the α/β-stereoselectivity, yields, and intermediate changes were associated with their donor reactivity. These findings enable to tailor the most suitable building blocks for stereo-controlled sialylation reactions.

Alpha-selective sialyl phosphate donors for preparation of sialosides and sialoside arrays for influenza virus detection

A novel N-acetyl-5-N,4-O-carbonyl-protected dibutyl sialyl phosphate donor for sialylation of both primary and sterically hindered secondary acceptors to prepare sialosides with high yield and α-selectivity is disclosed. Methods for making disaccharide building blocks comprising α(2→3), α(2→6), α(2→8), α(2→8)/α(2→9) alternate, and α(2→9) sialosides are provided. methods for one-pot synthesis of complex sialosides are disclosed. Libraries of sialosides and methods for using the libraries for detection and receptor binding analysis of surface glycoproteins or pathogens and cancer cells are disclosed. Methods for distinguishing between hemagglutinin (HA) from various strains of influenza are provided.

O-sialylation with N-acetyl-5-N,4-O-carbonyl-protected thiosialoside donors in dichloromethane: Facile and selective cleavage of the oxazolidinone ring

An N-acetyl-5-N,4-O-carbonyl-protected thiosialoside donor, the structure of which has been defined through X-ray crystallography, was prepared and tested in couplings to a wide range of acceptors. This donor gives excellent yields and α-selectivities in