Hydrochloric Acid → HCID 68745664, compound

Participants

Reaction Steps

To a solution of 3-(2,3,4,6-tetra-O-benzyl-β-D-glucopyranosyl)-4-methyl-1H-indole (150 mg) in N,N-dimethylformamide (2 mL) was added 55% sodium hydride (12 mg) under ice-cooling, and the mixture was stirred at the same temperature for 15 minutes. To this mixture was added 4-ethylbenzyl bromide (55 mg) at the same temperature, and the mixture was stirred at the same temperature for 15 minutes, and stirred at room temperature for 1 hour. The reaction mixture was poured into 0.5 mol/L hydrochloric acid, and the resulting mixture was extracted with diethylether. The extract was washed with water and brine successively, and dried over anhydrous sodium sulfate. The solvent was removed under reduced pressure. The residue was washed with a mixed solvent of n-hexane and diethyl ether (10/1), and dried under reduced pressure to give 3-(2,3,4,6-tetra-O-benzyl-β-D-glucopyranosyl)-1-(4-ethyl-benzyl)-4-methyl-1H-indole (139 mg). This material (125 mg) was dissolved in a mixed solvent of methanol (2 mL) and tetra hydrofuran (2 mL). To the solution was added 10% palladium-carbon powder (50 mg), and the mixture was stirred at room temperature under a hydrogen atmosphere for 4 hours. The insoluble material was removed by filtration, and the solvent was removed under reduced pressure. The residue was purified by column chromatography on silica gel (eluent: dichloromethane/methanol=8/1) to give the title compound (58 mg).

Provenance & Evidence