131531-76-5

Basic information

• Product Name: p-methylphenyl 2,3,4,6-tetra-O-benzyl-thio-β-D-glucopyranoside
• Synonyms: p-methylphenyl 2,3,4,6-tetra-O-benzyl-thio-β-D-glucopyranoside
• CAS NO: 131531-76-5
• Molecular Weight: 646.847
• Mol File: 131531-76-5.mol

Chemical Properties

• CAS DataBase Reference: p-methylphenyl 2,3,4,6-tetra-O-benzyl-thio-β-D-glucopyranoside(CAS DataBase Reference)
• NIST Chemistry Reference: p-methylphenyl 2,3,4,6-tetra-O-benzyl-thio-β-D-glucopyranoside(131531-76-5)
• EPA Substance Registry System: p-methylphenyl 2,3,4,6-tetra-O-benzyl-thio-β-D-glucopyranoside(131531-76-5)

Safety Data

• Hazardous Substances Data: 131531-76-5(Hazardous Substances Data)

Upstream product

• 106-45-6 para-thiocresol 
• 178681-00-0 2,3,4,6-tetra-O-benzyl-α-D-mannopyranosyl trichloroacetate 
• 100-39-0 benzyl bromide 
• 457931-46-3 4-methylphenyl 1-thio-α-D-mannopyranoside 
• 28244-94-2 p-tolyl-2,3,4,6-tetra-O-acetyl-1-thio-β-D-glucopyranoside 
• 1158796-28-1 1-(2,3,4,6-tetra-O-benzyl-β-D-glucosyl)-4,5,6,7-tetrafluoro-1H-benzo[d][1,2,3]triazole 
• 28244-94-2 4-methylphenyl 2,3,4,6-tetra-O-acetyl-1-thio-β-D-galactopyranoside 
• 1152-39-2 p-methylphenyl-1-thio-β-D-galactopyranoside 
• 100-44-7 benzyl chloride 
• 4291-69-4 2,3,4,6-Tetra-O-benzyl-D-glucopyranose 
• 850416-39-6 p-methylphenyl 2,3-di-O-benzyl-4,6-O-(R)-benzylidene-1-thio-β-D-glucopyranoside 
• 219518-19-1 4-methylphenyl 4,6-O-benzylidene-1-thio-β-D-glucopyranoside 
• 1152-39-2 p-methylphenyl 1-thio-β-D-glucopyranoside 
• 596087-18-2 4-methylphenyl 2,3-di-O-benzyl-1-thio-β-D-glucopyranoside 

Downstream Products

• 671809-13-5 C₆₇H₆₄N₁₂O₁₄ 
• 129894-49-1 cyclohexyl 2,3,4,6-tetra-O-benzyl-β-D-mannopyranoside 
• 129894-48-0 cyclohexyl 2,3,4,6-tetra-O-benzyl-α-D-mannopyranoside 
• 19488-61-0 methyl 2,3,4,6-tetra-O-benzyl α-D-glucopyranoside 
• 3879-79-6 methyl 2,3,4,6-tetra-O-benzyl-α-D-glucopyranoside 
• 55094-26-3 methyl 2,3,4,6-tetra-O-benzyl-β-D-glucopyranosyl-(1-6)-2,3,4-tri-O-benzyl-α-D-glucopyranoside 
• 56632-57-6 methyl O-2,3,4,6-tetra-O-benzyl-α-D-glucopyranosyl-(1->6)-2,3,4-tri-O-benzyll-α-D-glucopyranoside 
• 61474-61-1 methyl 2,3,4-tri-O-benzyl-6-O-(2,3,4,6-tetra-O-benzyl-D-glucopyranosyl)-α-D-glucopyranoside 
• 77117-44-3 methyl 2,3,6-tri-O-benzyl-4-O-(2,3,4,6-tetra-O-benzyl-β-D-glucopyranosyl)-α-D-glucopyranoside 
• 64694-18-4 methyl 2,3,6-tri-O-benzyl-4-O-(2,3,4,6-tetra-O-benzyl-α-D-glucopyranosyl)-α-D-glucopyranoside 

Relevant articles and documents

Selective activation of glycosyl donors utilising electrochemical techniques: A study of the thermodynamic oxidation potentials of a range of chalcoglycosides

A series of six chalcoglycosides (phenyl-2,3,4,6-tetra-0-benzoyl-1-seleno-β-D-glucopyranoside, phenyl-2,3,4,6-tetraO-benzyl-1-seleno-β-D-glucopyranoside, phenyl-2,3,4,6-tetra-O-benzyl-1-thio-β-D-glucopyranoside, p-tolyl-2,3,4,6-O-benzoyl-1-thio-β-D-glucop

Automated Quantification of Hydroxyl Reactivities: Prediction of Glycosylation Reactions

The stereoselectivity and yield in glycosylation reactions are paramount but unpredictable. We have developed a database of acceptor nucleophilic constants (Aka) to quantify the nucleophilicity of hydroxyl groups in glycosylation influenced by the steric, electronic and structural effects, providing a connection between experiments and computer algorithms. The subtle reactivity differences among the hydroxyl groups on various carbohydrate molecules can be defined by Aka, which is easily accessible by a simple and convenient automation system to assure high reproducibility and accuracy. A diverse range of glycosylation donors and acceptors with well-defined reactivity and promoters were organized and processed by the designed software program “GlycoComputer” for prediction of glycosylation reactions without involving sophisticated computational processing. The importance of Aka was further verified by random forest algorithm, and the applicability was tested by the synthesis of a Lewis A skeleton to show that the stereoselectivity and yield can be accurately estimated.

Synthesis method of voglibose

The invention provides a synthesis method of voglibose, and solves the technical problems that in an existing synthesis method of voglibose, raw materials are difficult to obtain, high in price, large in investment, low in yield and not suitable for industrial production. The synthesis method comprises the steps: synthesizing a compound V by taking glucose monohydrate and sodium acetate as raw materials through eleven reaction steps; and preparing a compound VIII from the compound V through an addition reaction, a ring-opening reaction and an aldol condensation reaction, and thus obtaining voglibose through amination reduction of the compound VIII. The synthesis method of voglibose can be widely applied to the technical field of voglibose synthesis methods.

Mapping mechanisms in glycosylation reactions with donor reactivity: Avoiding generation of side products

The glycosylation reaction, which is key for the studies on glycoscience, is challenging due to its complexity and intrinsic side reactions. Thioglycoside is one of the most widely used glycosyl donors in the synthesis of complex oligosaccharides. However, one of the challenges is its side reactions, which lower its yield and limits its efficiency, thereby requiring considerable effort in the optimization process. Herein, we reported a multifaceted experimental approach that reveals the behaviors of side reactions, such as the intermolecular thioaglycon transformation and N-glycosyl succinimides, via the glycosyl intermediate. Our mechanistic proposal was supported by low temperature NMR studies that can further be mapped by utilizing relative reactivity values. Accordingly, we also presented our findings to suppress the generation of side products in solving this particular problem for achieving high-yield glycosylation reactions.

Establishment of Guidelines for the Control of Glycosylation Reactions and Intermediates by Quantitative Assessment of Reactivity

Stereocontrolled chemical glycosylation remains a major challenge despite vast efforts reported over many decades and so far still mainly relies on trial and error. Now it is shown that the relative reactivity value (RRV) of thioglycosides is an indicator for revealing stereoselectivities according to four types of acceptors. Mechanistic studies show that the reaction is dominated by two distinct intermediates: glycosyl triflates and glycosyl halides from N-halosuccinimide (NXS)/TfOH. The formation of glycosyl halide is highly correlated with the production of α-glycoside. These findings enable glycosylation reactions to be foreseen by using RRVs as an α/β-selectivity indicator and guidelines and rules to be developed for stereocontrolled glycosylation.

Simple and Practical Real-Time Analysis of Solid-Phase Reactions by Thin-Layer Chromatography

Solid-phase synthesis is a practical approach for simplifying the time-consuming and routine purification steps in the preparation of numerous naturally occurring molecules; however, studying such reactions is difficult due to the lack of a convenient monitoring method. By using thin-layer chromatography in conjunction with a photolabile linker on a resin, we developed a convenient and simple method for monitoring solid-phase reactions in real time by thin-layer chromatography. This method provides a user-friendly protocol for examining reaction conditions for solid-state syntheses.

Stereoretentive C(sp3)-S Cross-Coupling

We report a stereoretentive cross-coupling reaction of configurationally stable nucleophiles with disulfide and N-sulfenylsuccinimide donors promoted by Cu(I). We demonstrate the utility of this method in the synthesis of thioglycosides derived from simple alkyl and aryl thiols, thioglycosides, and in the glycodiversification of cysteine residues in peptides. These reactions operate well with carbohydrate substrates containing common protective groups and reagents with free hydroxyl and secondary amide functionalities under standardized conditions. Competition experiments in combination with computational DFT studies established that the putative anomeric intermediate is an organocopper species that is configurationally stable and resistant to epimerization due to its short lifetime. The subsequent reductive elimination from the Cu(III) intermediate is rapid and stereoretentive. Taken together, the glycosyl cross-coupling is ideally suited for late stage glycodiversification and bioconjugation under highly controlled installation of the aliphatic carbon-sulfur bonds.

Glycosylated Platinum(IV) Complexes as Substrates for Glucose Transporters (GLUTs) and Organic Cation Transporters (OCTs) Exhibited Cancer Targeting and Human Serum Albumin Binding Properties for Drug Delivery

Glycosylated platinum(IV) complexes were synthesized as substrates for GLUTs and OCTs for the first time, and the cytotoxicity and detailed mechanism were determined in vitro and in vivo. Galactoside Pt(IV), glucoside Pt(IV), and mannoside Pt(IV) were highly cytotoxic and showed specific cancer-targeting properties in vitro and in vivo. Glycosylated platinum(IV) complexes 5, 6, 7, and 8 (IC50 0.24-3.97 μM) had better antitumor activity of nearly 166-fold higher than the positive controls cisplatin (1a), oxaliplatin (3a), and satraplatin (5a). The presence of a hexadecanoic chain allowed binding with human serum albumin (HSA) for drug delivery, which not only enhanced the stability of the inert platinum(IV) prodrugs but also decreased their reduction by reductants present in human whole blood. Their preferential accumulation in cancer cells compared to noncancerous cells (293T and 3T3 cells) suggested that they were potentially safe for clinical therapeutic use.

Urea–hydrogen peroxide prompted the selective and controlled oxidation of thioglycosides into sulfoxides and sulfones

A practical method for the selective and controlled oxidation of thioglycosides to corresponding glycosyl sulfoxides and sulfones is reported using urea–hydrogen peroxide (UHP). A wide range of glycosyl sulfoxides are selectively achieved using 1.5 equiv of UHP at 60 °C while corresponding sulfones are achieved using 2.5 equiv of UHP at 80 °C in acetic acid. Remarkably, oxidation susceptible olefin functional groups were found to be stable during the oxidation of sulfide.

Dehydrative glycosylation with cyclic phosphonium anhydrides

Cyclic phosphonium anhydrides generated from bis-phosphine oxides and trifluoromethanesulfonic anhydride are shown as general coupling reagents in a dehydrative glycosylation reaction of C1-hemiacetals. This reaction protocol is characterized by a broad substrate scope and high yields, including reactions of O-, C-, N-, and S-based nucleophiles with furanose, pyranose, and deoxysugar donors.