4,6-O-BENZYLIDENE-D-GLUCOPYRANOSE Chemical Properties

Melting point:

183-186 °C

Boiling point:

521.6±50.0 °C(Predicted)

Density 

1.379±0.06 g/cm3(Predicted)

storage temp. 

under inert gas (nitrogen or Argon) at 2-8°C

solubility 

DMF: 25 mg/ml; DMSO: 14 mg/ml; Ethanol: 25 mg/ml; PBS (pH 7.2): 1 mg/ml

form 

A crystalline solid

pka

12.44±0.20(Predicted)

color 

White to off-white

Safety Information

WGK Germany 

3

HS Code 

2940000080

4,6-O-BENZYLIDENE-D-GLUCOPYRANOSE Usage And Synthesis

Description

4,6-O-Benzylidene-D-glucose is a useful intermediate for the synthesis of carbohydrates.

Uses

4,6-O-Benzylidene-D-glucose is a benzaldehyde derivative with anticancer effects[1].

Synthesis

The general procedure for the synthesis of 4,6-O-benzylidene-D-glucose from (3R,4S,5S,6R)-6-(hydroxymethyl)tetrahydro-2H-pyran-2,3,4,5-tetraol (1.00 g, 5.55 mmol) and benzaldehyde dimethylacetal (1.24 mL, 8.33 mmol) was as follows: (3R,4S,5S,6R)-6-(hydroxymethyl)tetrahydro-2H-pyran-2,3,4,5-tetraol was dissolved in N,N-dimethylformamide (11.0 mL). methyl)tetrahydro-2H-pyran-2,3,4,5-tetrol was dissolved in N,N-dimethylformamide (11.0 mL) and heated to 60 °C to dissolve it completely. Subsequently, benzaldehyde dimethyl acetal and p-toluenesulfonic acid monohydrate (10 mg) were added to the solution and the reaction mixture was stirred at 60 °C for 6 hours. During the reaction, a decompression operation was performed for 10 minutes every hour to remove volatile by-products. Upon completion of the reaction, the solvent was removed by evaporation under reduced pressure. The crude product obtained was purified by silica gel column chromatography using methanol/ethyl acetate (1:10, v/v) as eluent to collect the fraction containing 4,6-O-benzylidene-D-glucopyranose, resulting in a white crystalline product (799.5 mg, 2.98 mmol, 53.7% yield). Note: The (3R,4S,5S,6R)-6-(hydroxymethyl)tetrahydro-2H-pyran-2,3,4,5-tetraol used in the experiment was D-(+)-glucose, which was supplied by Kanto Kagaku Co.

References

[1] E O Pettersen, et al. Effect on protein synthesis and cell survival of the benzaldehyde derivatives sodium benzylidene ascorbate (SBA) and the deuterated compound zilascorb(2H). Anticancer Res. 1991 May-Jun;11(3):1077-81. PMID:1888141