118977-26-7

Usage

Uses

N-Acetyl-?2-?S-?phenyl-?2-?thio-4,?7,?8,?9-?tetraacetate-α-?neuraminic Acid Methyl Ester is a useful reagent for stereoselective synthesis of 2-thioglycosides of N-acetylneuraminic acid.

Upstream product

• 67670-69-3 N-acetyl-4,7,8,9-tetra-O-acetyl-2-chloro-2-deoxyneuraminic acid methyl ester 
• 108-98-5 thiophenol 
• 6931-68-6 methyl 5-acetamido-2,4,7,8,9-penta-O-acetyl-3,5-dideoxy-D-glycero-D-galacto-2-nonulopyranosonate 
• 19342-33-7 N-acetyl neuraminic acid 
• 20298-35-5 N-acetylneuraminic acid methyl ester 
• 84380-10-9 4,7,8,9-tetra-O-acetyl-N-acetylneuraminic acid methyl ester 
• 930-69-8 sodium thiophenolate 
• 4551-15-9 phenylthiotrimethylsilane 
• 107020-85-9 (4S,5R,6R)-4-Acetoxy-5-acetylamino-6-((1S,2R)-1,2,3-triacetoxy-propyl)-tetrahydro-pyran-2-carboxylic acid methyl ester 
• 108-24-7 acetic anhydride 
• 108740-39-2 (1S,2R)-1-((2R,3R,4S,6R)-3-acetamido-4,6-diacetoxy-6-(methoxycarbonyl)tetrahydro-2H-pyran-2-yl)propane-1,2,3-triyl triacetate 

Downstream Products

• 178425-76-8 C₅₉H₆₄N₂O₂₇S 
• 197663-24-4 O--(2->6)-O-(2-acetamido-3,4-di-O-acetyl-2-deoxy-α-D-galactopyranosyl)-(1->3)-N-(trichloroethoxycarbonyl)-L-serine benzyl ester 
• 243136-85-8 5-azido-3-oxapentyl (methyl [5-acetamido-4,7,8,9-tetra-O-acetyl-3,5-dideoxy-D-glycero-α-D-galacto-2-nonulopyranosyl]onate)-(2->6)-(2,3-di-O-acetyl-β-D-galactopyranosyl)-(1->4)-2-acetamido-3-O-acetyl-6-O-benzyl-2-deoxy-β-D-glucopyranoside 
• 145387-35-5 methyl (phenyl 5-acetamido-3,5-dideoxy-2-thio-D-glycero-α-D-galactonon-2-ulopyranoside)onate 
• 934415-78-8 methyl (phenyl 5-N,4-O-carbonyl-3,5-dideoxy-2-thio-D-glycero-α-D-galactonon-2-ulopyranoside)onate 
• 1062111-60-7 methyl 5-acetamido-4,7,8,9-tetra-O-acetyl-3,5-dideoxy-D-glycero-α-D-galacto-non-2-ulopyranosylonate(2->6)-methyl 2,3,4-tri-O-benzyl-α-D-galactopyranoside 
• 1000890-37-8 methyl (thiophenyl 5-N-propionyl-4,7,8,9-tetra-O-acetyl-3,5-dideoxy-D-glycero-α-D-galacto-2-nonulopyranosyl)onate 
• 1000890-38-9 methyl (thiophenyl 5-N-butanoyl-4,7,8,9-tetra-O-acetyl-3,5-dideoxy-D-glycero-α-D-galacto-2-nonulopyranosyl)onate 
• 1422372-87-9 thiophenylmethyl-5-N-cyclopropylcarbonyl-4,7,8,9-tetra-OAc-3,5-dideoxy-α-D-glycero-D-galacto-2-nonulopyranosylate 
• 73960-72-2 methyl-2,3-didehydro-4,7,8,9-tetra-O-acetyl-N-acetylneuraminate 

Relevant academic research and scientific papers

Concise Synthesis of 1-Thioalkyl Glycoside Donors by Reaction of Per-O-acetylated Sugars with Sodium Alkanethiolates under Solvent-Free Conditions

A relatively green method for synthesizing 1-thioalkyl glycosides has been developed, where sodium alkanethiolates were used to react with per-O-acetylated sugars instead of odorous alkyl mercaptans in the presence of BF3·Et2O without the use of solvents under mild conditions. Furthermore, we found that 1,2-trans-β-thioglycosides can be converted into corresponding 1,2-cis-α-thioglycosides in the presence of trifluoromethanesulfonic acid in nonpolar solvents under mild conditions. This provides a simple and efficient new approach for synthesizing challenging 1,2-cis-α-thioglycosides.

Facile anomer-oriented syntheses of 4-methylumbelliferyl sialic acid glycosides

As part of a program to find new sialidases and determine their enzymatic specificity and catalytic activity, a library of 4-methylumbelliferyl sialic acid glycosides derivatised at the C-5 position were prepared fromN-acetylneuraminic acid. Both α- and β-4-methylumbelliferyl sialic acid glycosides were prepared in high yields and stereoselectivity. α-Anomers were accessedviareagent control by utilising additive CH3CN and TBAI, whereas the β-anomers were synthesised through a diastereoselective addition reaction of iodine and the aglycone to the corresponding glycal followed by reduction of the resulting 3-iodo compounds. Both anomer-oriented synthetic pathways allow for gram-scale stereoselective syntheses of the desired C-5 modified neuraminic acid derivatives for use as tools to quantify the enzymatic activity and substrate specificity of known sialidases, and potential detection and investigation of novel sialidases.

Triflic acid-mediated synthesis of thioglycosides

An efficient synthesis of thioglycosides from per-acetates in the presence of triflic acid is described. The developed protocol features high reaction rates and product yields. Some reactive sugar series give high efficiency in the presence of sub-stoichiometric trifluoromethanesulfonic acid (TfOH) in contrast to other known protocols that require multiple equivalents of Lewis acids to reach high conversion rates.

Facile and robust methods for the regioselective acylation of: N -acetylneuraminic acid

The stereoselective synthesis of sialic acid glycoconjugates is still a challenge in the field. Surprisingly, little is known on the regioselective O-substitution of sialic acids. Consequently, the effect of O-protecting groups and/or regioselectively pro

The total synthesis of a ganglioside Hp-s1 analogue possessing neuritogenic activity by chemoselective activation glycosylation

The total synthesis of ganglioside 2, an analogue of the ganglioside Hp-s1 (1) which displays neuritogenic activity toward the rat pheochromocytoma cell line PC-12 cell in the presence of nerve growth factor (NGF) with an effect (34.0%) greater than that

Chemical Synthesis and Enzymatic Testing of CMP-Sialic Acid Derivatives

The cycloSal approach has been used in the past for the synthesis of a range of phosphorylated bioconjugates. In those reports, cycloSal nucleotides were allowed to react with different phosphate nucleophiles. With glycopyranosyl phosphates as nucleophile

N,N-Diacetylsialyl chloride-a novel readily accessible sialyl donor in reactions with neutral and charged nucleophiles in the absence of a promoter

N,N-Diacetylneuraminic acid glycosyl chloride was prepared for the first time and made to react with various nucleophiles to give the corresponding α-glycosyl phosphate, β-glycosyl dibenzyl phosphate, α-glycosyl azide, α-phenyl thioglycoside and α-glycosyl xanthate in 65-82% yields and high stereoselectivity while its reactions with simple alcohols were not stereoselective. The new sialyl donor made possible the first stereoselective synthesis of sialic acid glycosyl phosphate with α-configuration and highly efficient synthesis of β-configured sialic acid glycosyl dibenzyl phosphate.

Anomeric samarium(III) intermediates of N-acetylneuraminic acid from anomeric 2-pyridylsulfides

Treatment of the anomeric 2-thiopyridyl derivative of N-acetylneuraminic acid (sialic acid or Neu5Ac) with samarium diiodide in the presence of aldehydes or ketones provides the corresponding C-sialylated derivatives in excellent yields. The efficiency of

Ganglioside GM3 derivatives with truncated ceramide moiety: Facial synthesis and inhibitory activity against KB cell growth

An expeditious sialylation reaction with phenylthioglycoside 4 as a sialyl donor and MeSOTf as a promoter was developed. These conditions are very useful for synthesizing ganglioside GM 3 (1), its C8-ceramide analog 2, and 3-deoxy analog 3 of 2 in an efficient manner. The GM 3 analog 2, whose hydrophilicity is increased by shortening the ceramide moiety, exhibits increased growth inhibiton of KB cells. The 3-hydoxy group of ceramide does not influence its activity against KB cells. Copyright Taylor & Francis Group, LLC.

Mild stereoselective syntheses of thioglycosides under PTC conditions and their use as active and latent glycosyl donors

Mild and stereoselective arylthio glycoside syntheses were accomplished by inversion of configuration of glycosyl halides under phase transfer catalyzed conditions. Under such conditions, aryl α-thiosialosides having electron donating and withdrawing subs