6207-44-9

Upstream product

• 4291-69-4 2,3,4,6-Tetra-O-benzyl-D-glucopyranose 
• 1469-70-1 allyl ethyl carbonate 
• 2595-07-5 allyl β-D-glucopyranoside 
• 100-39-0 benzyl bromide 
• 106-95-6 allyl bromide 
• 80300-30-7 1-O-acetyl-2,3,4,6-tetra-O-benzyl-D-glucopyranose 
• 1693-71-6 tris(allyl)borate 
• 47727-93-5 2,3,4-tri-O-benzyl-D-glucopyranose 
• 107-18-6 allyl alcohol 
• 48149-74-2 allyl D-glucopyranoside 
• 90357-89-4 2,3,4,6-tetra-O-benzyl-β-D-glucopyranosyl trichloroacetimidate 
• 74808-09-6 2,3,4,6-tetra-O-benzyl-α-D-glucopyranosyl trichloroacetimidate 
• 85618-23-1 n-propyl 2,3,4,6-tetra-O-acetyl-1-thio-β-D-glucopyranoside 
• 604-69-3 β-D-glucose pentaacetate 

Downstream Products

• 173206-22-9 Eth-2-al-1-yl-2,3,4,6-tetra-O-benzyl-β-D-glucopyranoside 
• 146773-71-9 allyl O-(2,3,4,6-tetra-O-benzyl-β-D-glucopyranosyl)-(1<*>6)-2,3,4-tri-O-benzyl-α-D-glucopyranoside 
• 236731-57-0 allyl (2,3,4,6-tetra-O-benzyl-α-D-glucopyranosyl)-(1->4)-2,3-O-isopropylidene-α-L-rhamnopyranoside 
• 6564-72-3 2,3,4,6-tetra-O-benzyl-D-glucopyranose 
• 59531-24-7 2,3,4,6-tetra-O-benzyl-D-glucopyranoside 
• 13096-62-3 (3R,4S,5R,6R)-3,4,5-tris(benzyloxy)-6-((benzyloxy)methyl)tetrahydro-2H-pyran-2-one 
• 168336-52-5 C₃₉H₄₄O₆Si 
• 1384643-86-0 C₄₄H₄₁NO₉ 
• 1384643-88-2 C₄₃H₄₁NO₈ 
• 1384643-90-6 C₄₃H₄₃NO₆ 
• 1384643-91-7 C₄₃H₄₃NO₆ 
• 1384643-96-2 C₄₅H₄₄N₂O₆ 
• 168105-48-4 C₇₂H₇₀O₁₀ 
• 141196-28-3 trimethyl(((2S,3S,4R,5R,6R)-3,4,5-tris(benzyloxy)-6-(benzyloxymethyl)-tetrahydro-2H-pyran-2-yl)ethynyl)silane 

Relevant academic research and scientific papers

Direct dehydrative glycosylation catalyzed by diphenylammonium triflate

Methods for direct dehydrative glycosylations of carbohydrate hemiacetals catalyzed by diphenylammonium triflate under microwave irradiation are described. Both armed and disarmed glycosyl-C1-hemiacetal donors were efficiently glycosylated in moderate to excellent yields without the need for any drying agents and stoichiometric additives. This method has been successfully applied to a solid-phase glycosylation.

An Unexpected FeCl 3/C-Catalyzed β-Stereoselective Glycosylation in the Presence of the C(2)-Benzyl Group

An efficient and completely β-stereoselective glycosylation that did not rely on neighboring group participation is described using 2-20 molpercent FeCl 3 /C as the catalyst and benzylated propargyl glycosides as the donors to reach yields up to 96percent under mild condition. With an octatomic-ring intermediate at the α-face of FeCl 3 /C with alkyne of propargyl glycosides, a panel of aglycones comprising aliphatic, alicyclic, unsaturated alcohols, halogenated alcohols, and phenols with different substitution were examined successfully for the exclusive β-stereoselective glycosylation reaction.

Tris(pentafluorophenyl)borane-promoted stereoselective glycosylation with glycosyl trichloroacetimidates under mild conditions

Tris(pentafluorophenyl)borane-promoted stereoselective glycosylation with trichloroacetimidate glycosyl donors is described. The reactions proceed efficiently with a wide range of acceptors, from sugar to nonsugar, under mild conditions in the presence of

Electron-deficient pyridinium salts/thiourea cooperative catalyzed O-glycosylation via activation of O-glycosyl trichloroacetimidate donors

The glycosylation of O-glycosyl trichloroacetimidate donors using a synergistic catalytic system of electron-deficient pyridinium salts/aryl thiourea derivatives at room temperature is demonstrated. The acidity of the adduct formed by the 1, 2-addition of

Glycosyl ortho-Methoxybenzoates: Catalytically Activated Glycosyl Donors with an Easily Removable and Recyclable Leaving Group

We describe the β-ortho-methoxybenzoate as a shelf stable and practical C-1 nucleofuge for catalytic chemical glycosylation in which the benzoic acid by-product can be easily removed, reisolated, and potentially recycled after the glycosylation reaction. This new type of glycosyl donor can be efficiently activated by a range of promoters, including Bi(OTf)3, Fe(OTf)3, TMSOTf (TMS = trimethylsilyl), and triflic acid, with low (10 mol-%) catalyst loadings. The donor shows higher reactivity than analogous benzoate, p-methoxybenzoate and p-cyano-o-methoxybenzoate donors. In glycosylation reactions with o-methoxybenzoate donors, the yields of disaccharide products were good to excellent for various glycosyl acceptors, including a carbohydrate-based secondary alcohol. Furthermore, β-selective mannosylation was achieved with a Crich-type donor at 0 °C to ambient temperature, without donor preactivation. The donor was also used for the first step of a one-pot two-step glycosylation to obtain a trisaccharide; the second coupling involved activation of a thioglycoside with NIS/TMSOTf (NIS = N-iodosuccinimide). We believe that this offers a good alternative to current protocols.

Gold-catalysed glycosylation reaction using an easily accessible leaving group

Gold(iii)-catalysed glycosylation reaction has been developed by employing a new and easily accessible leaving group synthesized from ethyl cyanoacetate. Several nucleophiles like alcohols, thiols, allyltrimethylsilane, trimethylsilyl azide and triethylsilane have been reacted to make the corresponding glycosides in good yields and with marginal to excellent α-selectivity. This journal is

An Alternative Reaction Course in O-Glycosidation with O-Glycosyl Trichloroacetimidates as Glycosyl Donors and Lewis Acidic Metal Salts as Catalyst: Acid-Base Catalysis with Gold Chloride-Glycosyl Acceptor Adducts

Gold(III) chloride as catalyst for O-glycosyl trichloroacetimidate activation revealed low affinity to the glycosyl donor but high affinity to the hydroxy group of the acceptor alcohol moiety, thus leading to catalyst-acceptor adduct formation. Charge sep

Gold(III) Chloride and Phenylacetylene: A Catalyst System for the Ferrier Rearrangement, and O-Glycosylation of 1-O-Acetyl Sugars as Glycosyl Donors

We have developed a new catalyst system comprising AuCl3 and phenylacetylene that promotes the Ferrier rearrangement of glycals and 2-acetoxymethylglycals with different nucleophiles, and also the O-glycosylation of 1-O-acetyl sugars to obtain a variety of useful glycosides at room temperature through relay catalysis. Good anomeric selectivity was observed for the Ferrier rearrangements, whereas the O-glycosylation of 1-O-acetyl sugars gave mixtures of diastereomers with moderate to excellent selectivity.

Cooperative catalysis in glycosidation reactions with o-glycosyl trichloroacetimidates as glycosyl donors

Thiourea mediates cooperative glycosidation through hydrogen bonding. N,N′-Diarylthiourea as cocatalyst enforces an SN2-type acid-catalyzed glycosidation even at room temperature (see scheme; Bn=benzyl). From O-(α-glycosyl) trichloroacetimidates as glycosyl donors and various acceptors, β-glycosides are preferentially or exclusively obtained.

Bismuth(V)-mediated thioglycoside activation

A straightforward method utilizing a bismuth(V) compound was developed for the activation of thiopropylglycosides for coupling to various acceptors; good to excellent yields were obtained without applying additional additives/co-promoters. The method does