30657-71-7

Upstream product

• 83-87-4 D-Mannose pentaacetate 
• 108-95-2 phenol 
• 74808-10-9 2,3,4,6-tetra-O-acetyl-d-glucopyranosyl trichloroacetimidate 
• 19186-39-1 1,2,3,4,6-penta-O-acetyl-α-D-galactopyranose 
• 3947-62-4 2,3,4,6-tetra-O-acetyl-D-mannopyranose 
• 98-80-6 phenylboronic acid 
• 3262-89-3 triphenylboroxine 
• 4163-65-9 per-O-acetyl-α-D-mannopyranose 
• 287967-74-2 (2R,3R,4S,5S,6R)-2-(acetoxymethyl)-6-(4-iodophenoxy)tetrahydro-2H-pyran-3,4,5-triyl triacetate 
• 1095-03-0 triphenylborane 
• 83-87-4 β-D-mannopyranose pentaacetate 
• 604-70-6 methyl 2,3,4,6-tetra-O-acetyl-α-D-mannopyranoside 

Downstream Products

• 1464-44-4 phenyl α-D-mannoopyranoside 
• 898815-55-9 phenyl-α-D-talopyranoside 

Relevant academic research and scientific papers

Syntheses and NMR and XRD studies of carbohydrate-ferrocene conjugates

Carbohydrate-ferrocene conjugates were synthesized and showed that the ferrocene entity appeared to be confined to a low volume so that proton NMR spectroscopy revealed 3 to 4 signals for substituted cyclopentadienyl instead of two usually.

Copper-Catalyzed Anomeric O-Arylation of Carbohydrate Derivatives at Room Temperature

Direct and practical anomeric O-arylation of sugar lactols with substituted arylboronic acids has been established. Using copper catalysis at room temperature under an air atmosphere, the protocol proved to be general, and a variety of aryl O-glycosides have been prepared in good to excellent yields. Furthermore, this approach was extended successfully to unprotected carbohydrates, including α-mannose, and it was demonstrated here how the interaction between carbohydrates and boronic acids can be combined with copper catalysis to achieve selective anomeric O-arylation.

Copper-mediated anomeric: O -arylation with organoboron reagents

Copper-mediated couplings of arylboroxines with glycosyl hemiacetals furnish O-aryl glycosides via Csp2-O bond formation. The method enables the anomeric O-arylation of protected pyranose and furanose derivatives, and is tolerant of functionalized arylboroxine partners. Whereas mixtures of anomers are formed from glucopyranose, galactopyranose and arabinofuranose hemiacetals, the α-anomer is generated selectively from mannopyranose and mannofuranose-derived substrates.

Phenyl glycosides – Solid-state NMR, X-ray diffraction and conformational analysis using genetic algorithm

The X-ray structures of 2,6-dimethylphenyl and phenyl 2,3,4,6-tetra-O-acetyl β-glucosides (1 and 3) and phenyl α-mannoside (6) were obtained. The independent part of the unit cell of the glycosides 1 and 6 was formed by one molecule, and for the glucoside 3, two molecules in the crystal cell were observed. In deacetylated glycosides 4 and 6 the crystal structure was established by a hydrogen bond network formed between the sugar hydroxyls and solvent molecules. The 13C CPMAS NMR spectra of aryl glycosides 1–6 were analysed. In the spectrum of 3, doubling of the C4 aryl signal was observed which confirmed the presence of two independent molecules in the solid sample. The GAAGS (Genetic Algorithm-Assisted Grid Search) method was used to determine the low-energy conformers of α-mannosides and β-glucosides. The orientation of the aryl pendant group was calculated using Molecular Mechanics (MMFF94) as well as Quantum Mechanics theory (DFT, B3LYP/6-31 + G(d,p)).

Palladium-catalyzed ullmann-type reductive homocoupling of iodoaryl glycosides

A catalytic synthesis of novel biaryl-linked divalent glycosides was achieved using an electroreductive palladium-catalyzed iodoaryl-iodoaryl coupling reaction. This new method was optimized for the synthesis of divalent biaryl-linked mannopyranosides that was subsequently generalized toward several carbohydrate substrates with yields up to 96%.

COMPOUNDS AND METHODS FOR TREATING BACTERIAL INFECTIONS

The present invention encompasses compounds and methods for treating urinary tract infections.

The catalytic synthesis of aryl O-glycosides using triaryloxyboranes

Triaryloxyboranes worked as highly reactive glycosyl acceptors of glycosyl acetates to afford aryl O-glycosides in excellent yields. A catalytic amount of ytterbium(III) trifluoromethanesulfonate activated the formation reaction of aryl O-glycosidic linka

Stannic chloride promoted synthesis of mannosides

Use of anhyd.SnCl4 has been described for the synthesis of aryl, arylalkyl and alkyl α-D-mannopyranosides.A possible mechanism for the formation of α-anomer in these reactions is discussed.