dichloromethoxybenzene

Conditions: temp:0.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: Diethylphosphite (20.6 ml) was added dropwise at 20° C. to a stirred suspension of 55% sodium hydride (6.24 g) in dimethylformamide (90 ml). After stirring for a further 15 minutes, the mixture was cooled to 0° C., and dichloromethyl phenyl ether (9.27 g) was added dropwise. Stirring was continued overnight at 45° C., and the mixture was cooled in ice, diluted with water, neutralized and extracted with ethyl acetate. The organic phase was washed repeatedly with water, dried and evaporated in vacuo to yield an oil which was purified by chromatography on silica gel. Eluent: ether-acetone 85:15. The pure title compound was obtained as a colourless oil. Stirring was continued overnight at 45° C. the mixture was cooled in ice extracted with ethyl acetate The organic phase was washed repeatedly with water dried evaporated in vacuo to yield an oil which was purified by chromatography on silica gel

Conditions: temp:0.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: Diethylphosphite (20.6 ml) was added dropwise at 20° C. to a stirred suspension of 55% sodium hydride (6.24 g) in dimethylformamide (90 ml). After stirring for a further 15 minutes, the mixture was cooled to 0° C., and dichloromethyl phenyl ether (9.27 g) was added dropwise. Stirring was continued overnight at 45° C., and the mixture was cooled in ice, diluted with water, neutralized and extracted with ethyl acetate. The organic phase was washed repeatedly with water, dried and evaporated in vacuo to yield an oil which was purified by chromatography on silica gel. Eluent: ether-acetone 85:15. The pure title compound was obtained as a colourless oil. Stirring was continued overnight at 45° C. the mixture was cooled in ice extracted with ethyl acetate The organic phase was washed repeatedly with water dried evaporated in vacuo to yield an oil which was purified by chromatography on silica gel

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a solution of dichlorophenoxymethane (1 g) in acetonitrile (10 mL) was added methanesulfonamide (0.39 g) under ice-cooling, and the mixture was stirred at room temperature for 48 hours. The reaction mixture was poured into a saturated aqueous sodium hydrogen carbonate solution, and the resulting mixture was extracted with ethyl acetate. The organic layer was washed with water and brine, and dried over anhydrous magnesium sulfate. The solvent was removed under reduced pressure to give 1-(N-methanesulfonylamino)-1,1-diphenoxymethane (0.95 g). To a solution of 3-(2,3,4,6-tetra-O-acetyl-β-D-glucopyranosyloxy)-4-{[4-(2-aminoethoxy)-2-methylphenyl]methyl}-5-isopropyl-1H-pyrazole (50 mg) in tetrahydrofuran (1 mL) was added 1-(N-methanesulfonylamino)-1,1-diphenoxymethane (26 mg) under ice-cooling, and the mixture was stirred at room temperature for 1 hour. To the reaction mixture was added 2-aminoethanol (49 mg), and the mixture was stirred at 60° C. overnight. The reaction mixture was concentrated under reduced pressure, and the residue was dissolved in methanol (2 mL). To the solution was added sodium methoxide (28% methanol solution, 0.008 mL), and the mixture was stirred at room temperature for 3 hours. To the reaction mixture was added acetic acid (0.01 mL). The resulting mixture was concentrated under reduced pressure, and the residue was purified by solid phase extraction on ODS (washing solvent: distilled water, eluent: methanol) to give the title compound (38 mg). cooling the resulting mixture was extracted with ethyl acetate The organic layer was washed with water and brine dried over anhydrous magnesium sulfate The solvent was removed under reduced pressure

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a solution of dichlorophenoxymethane (1 g) in acetonitrile (10 mL) was added methanesulfonamide (0.39 g) under ice-cooling, and the mixture was stirred at room temperature for 48 hours. The reaction mixture was poured into a saturated aqueous sodium hydrogen carbonate solution, and the resuling mixture was extracted with ethyl acetate. The organic layer was washed with water and brine, and dried over anhydrous magnesium sulfate. The solvent was removed under reduced pressure to give 1-(N-methanesulfonylimino)-1,1-diphenoxymethane (0.95 g). To a solution of 3-(2,3,4,6-tetra-O-acetyl-β-D-glucopyranosyloxy)-4-{[4-(2-aminoethoxy)-2-methylphenyl]methyl}-5-isopropyl-1H-pyrazole (50 mg) in tetrahydrofuran (1 mL) was added 1-(N-methanesulfonylimino)-1,1-diphenoxymethane (26 mg) under ice-cooling, and the mixture was stirred at room temperature for 1 hour. To the reaction mixture was added 2-aminoethanol (49 mg), and the mixture was stirred at 60° C. overnight. The reaction mixture was concentrated under reduced pressure, and the residue was dissolved in methanol (2 mL). To the solution was added sodium methoxide (28% methanol solution, 0.008 mL), and the mixture was stirred at room temperature for 3 hours. To the reaction mixture was added acetic acid (0.01 mL). The resulting mixture was concentrated under reduced pressure, and the residue was purified by solid phase extraction on ODS (washing solvent: distilled water, eluent: methanol) to give the title compound (38 mg). cooling the resuling mixture was extracted with ethyl acetate The organic layer was washed with water and brine dried over anhydrous magnesium sulfate The solvent was removed under reduced pressure

Conditions: temp:0.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: Diethylphosphite (20.6 ml) was added dropwise at 20° C. to a stirred suspension of 55% sodium hydride (6.24 g) in dimethylformamide (90 ml). After stirring for a further 15 minutes, the mixture was cooled to 0° C., and dichloromethyl phenyl ether (9.27 g) was added dropwise. Stirring was continued overnight at 45° C., and the mixture was cooled in ice, diluted with water, neutralized and extracted with ethyl acetate. The organic phase was washed repeatedly with water, dried and evaporated in vacuo to yield an oil which was purified by chromatography on silica gel. Eluent: ether-acetone 85:15. The pure title compound was obtained as a colourless oil. Stirring was continued overnight at 45° C. the mixture was cooled in ice extracted with ethyl acetate The organic phase was washed repeatedly with water dried evaporated in vacuo to yield an oil which was purified by chromatography on silica gel