2-chloroacetyl isocyanate

反応条件: temp:0.00; pressure:0.00; stir:

反応条件: temp:0.00; pressure:0.00; stir:

反応条件: temp:0.00; pressure:0.00; stir:

反応条件: temp:0.00; pressure:0.00; stir:

反応条件: temp:0.00; pressure:0.00; stir:

反応条件: temp:0.00; pressure:0.00; stir:

反応条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

実験手順: 3-tert-Butyl-5-iodo-4-methoxyaniline (915 mg, 3.0 mmol) and chloroacetyl isocyanate (0.256 mL, 3.00 mmol) were reacted in the same manner as Example 14 Part A to give crude product which was purified on an Isco 40 g silica cartridge eluting with methanol/dichloromethane (0% to 5%) to give the title compound. to give crude product which was purified on an Isco 40 g silica cartridge eluting with methanol/dichloromethane (0% to 5%)

反応条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

実験手順: To a solution of 3-tert-butyl-5-iodo-4-methoxyaniline (915 mg, 3.0 mmol) in dioxane (20 mL) at 0° C. was added chloroacetyl isocyanate (0.256 mL, 3.00 mmol) dropwise to give a solution that was stirred at room temperature for 3 hours. 1,8-Diazabicyclo[5.4.0]undec-7-ene (0.904 mL, 6.00 mmol) was added and the solution was stirred for 18 hours and partitioned between ethyl acetate and 1 M HCl. The ethyl acetate was washed with H2O, brine and dried (Na2SO4), filtered and concentrated in vacuo. The crude product was purified on an Isco 40 g silica cartridge eluting with methanol/dichloromethane (0% to 5%) to give the title compound. to give a solution that the solution was stirred for 18 hours partitioned between ethyl acetate and 1 M HCl The ethyl acetate was washed with H2O, brine dried (Na2SO4) filtered concentrated in vacuo The crude product was purified on an Isco 40 g silica cartridge eluting with methanol/dichloromethane (0% to 5%)

反応条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

実験手順: A dichloromethane solution containing 100 mg of a known (4aS,6S,7R,7aR)-6,7-epoxy-1,4a,5,6,7,7a-hexahydro-1-hydroxy-7-methylcyclopenta[c]pyrane-4-carboxylic acid methylester was cooled with ice followed by addition of chloroacetylisocyanate (45 ml) and stirring for 15 hours at room temperature. The reaction mixture was then extracted with dichloromethane. After washing the organic phase with brine, it was dried over anhydrous magnesium sulfate. After distilling off the solvent under reduced pressure, the residue was purified by silica gel chromatography to obtain a colorless powder from the hexane-ethyl acetate eluate in the form of (1R,4aS,6S,7R,7aR)-1-(chloroacetylcarbamoyloxy)-6,7-epoxy-1,4a,5,6,7,7a-hexahydro-7-methylcyclopenta[c]pyrane-4-carboxylic acid methylester (137 mg, yield: 91%). The physicochemical properties of this compound are described in Table 8, Compound No. 40. was cooled with ice The reaction mixture was then extracted with dichloromethane After washing the organic phase with brine, it was dried over anhydrous magnesium sulfate After distilling off the solvent under reduced pressure the residue was purified by silica gel chromatography

反応条件: temp:0.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

実験手順: To a solution of fumagillol (314 mg) in dichloromethane (5 ml) was added dropwise chloroacetyl isocyanate (160 mg) under ice cooling, followed by addition of dimethylaminopyridine (130 mg). The mixture was stirred at 0° C. for 2 hours. To this reaction mixture was added water and the mixture was extracted with dichloromethane. The organic layer was washed with saturated aqueous sodium chloride solution and dried over anhydrous magnesium sulfate. The solvent was distilled off under reduced pressure and the residue was subjected to silica gel column chromatography. The eluate obtained with a mixture of n-hexane and ethyl acetate (3:1) was concentrated under reduced pressure to give colorless, powdery O-chloroacetylcarbamoylfumagillol (318 mg) (71% yield). the mixture was extracted with dichloromethane The organic layer was washed with saturated aqueous sodium chloride solution dried over anhydrous magnesium sulfate The solvent was distilled off under reduced pressure The eluate obtained with a mixture of n-hexane and ethyl acetate (3:1) was concentrated under reduced pressure to give colorless

反応条件: temp:0.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

実験手順: To a solution of fumagillol (314 mg) in dichloromethane (5 ml) was added dropwise chloroacetyl isocyanate (160 mg) under ice cooling, followed by addition of dimethylaminopyridine (130 mg). The mixture was stirred at 0° C. for 2 hours. To this reaction mixture was added water and the mixture was extracted with dichloromethane. The organic layer was washed with saturated aqueous sodium chloride solution and dried over anhydrous magnesium sulfate. The solvent was distilled off under reduced pressure and the residue was subjected to silica gel column chromatography. The eluate obtained with a mixture of n-hexane and ethyl acetate (3:1) was concentrated under reduced pressure to give colorless, powdery O-chloroacetylcarbamoylfumagillol (318 mg) (71% yield). the mixture was extracted with dichloromethane The organic layer was washed with saturated aqueous sodium chloride solution dried over anhydrous magnesium sulfate The solvent was distilled off under reduced pressure The eluate obtained with a mixture of n-hexane and ethyl acetate (3:1) was concentrated under reduced pressure to give colorless

反応条件: temp:0.00; pressure:0.00; stir: