(R)-(+)-1-(4-氟苯基)异氰酸乙酯

反应条件: temp:60.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: A mixture of 3-(2-methylpyridin-4-yl)-1-trityl-1H-pyrazolo[4,3-c]pyridin-6-amine (intermediate 5a; 50 mg, 0.107 mmol) and 1-fluoro-4-[(1R)-1-isocyanatoethyl]-benzene (75 mg, 0.454 mmol) in 1,4-dioxane (1 mL) was heated to 60° C. overnight, then cooled down to RT and concentrated in vacuo. The residue was suspended in DCM and purified by chromatography on silica gel (0-50% MeOH/DCM) to yield a solid, which was directly dissolved in DCM (1 mL) and treated with TFA (1 mL). The mixture was stirred at RT for 3 h, then concentrated in vacuo and purified via reverse phase HPLC over a gradient of 20-55% MeCN with 0.1% TFA. The collected fractions were then partitioned between DCM/MeOH and 1N NaOH. The organic layer was dried (Na2SO4) and concentrated in vacuo to provide 1-[(1S)-1-(4-fluorophenyl)ethyl]-3-[3-(2-methylpyridin-4-yl)-1H-pyrazolo[4,3-c]pyridin-6-yl]urea as a solid (13 mg, 0.033 mmol, 31%). MS ESI calc'd. for C21H20N6OF. [M+1]+ 391, found 391. cooled down to RT concentrated in vacuo purified by chromatography on silica gel (0-50% MeOH/DCM) to yield a solid, which concentrated in vacuo purified via reverse phase HPLC over a gradient of 20-55% MeCN with 0.1% TFA The collected fractions were then partitioned between DCM/MeOH and 1N NaOH The organic layer was dried (Na2SO4) concentrated in vacuo

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: To a solution of methyl 2-[5-(3,5-dimethoxyphenyl)-4H-1,2,4-triazol-3-yl]-2-hydroxy-3-phenylpropanoate (7 mg) in 1 mL of THF was added NaOH (4 mg) and (R)-1-fluoro-4-(1-isocyanatoethyl)benzene (15 mg). The resulting mixture was stirred at ambient temperature overnight. The resulting mixture was diluted with ethyl acetate, and then quenched with water. The organic layer was concentrated and purified by reverse phase HPLC (YMC Pro-C18 column, gradient elution, 30% to 100% acetonitrile/water with 0.1% TFA) to give the title compound. LC/MS 517.2 (M+1). IC50 value=C rating. quenched with water The organic layer was concentrated purified by reverse phase HPLC (YMC Pro-C18 column, gradient elution, 30% to 100% acetonitrile/water with 0.1% TFA)

反应条件: temp:60.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: A mixture of 3-(2-methylpyridin-4-yl)-1-trityl-1H-pyrazolo[4,3-c]pyridin-6-amine (intermediate 5a; 50 mg, 0.107 mmol) and 1-fluoro-4-[(1R)-1-isocyanatoethyl]-benzene (75 mg, 0.454 mmol) in 1,4-dioxane (1 mL) was heated to 60° C. overnight, then cooled down to RT and concentrated in vacuo. The residue was suspended in DCM and purified by chromatography on silica gel (0-50% MeOH/DCM) to yield a solid, which was directly dissolved in DCM (1 mL) and treated with TFA (1 mL). The mixture was stirred at RT for 3 h, then concentrated in vacuo and purified via reverse phase HPLC over a gradient of 20-55% MeCN with 0.1% TFA. The collected fractions were then partitioned between DCM/MeOH and 1N NaOH. The organic layer was dried (Na2SO4) and concentrated in vacuo to provide 1-[(1S)-1-(4-fluorophenyl)ethyl]-3-[3-(2-methylpyridin-4-yl)-1H-pyrazolo[4,3-c]pyridin-6-yl]urea as a solid (13 mg, 0.033 mmol, 31%). MS ESI calc'd. for C21H20N6OF. [M+1]+ 391, found 391. cooled down to RT concentrated in vacuo purified by chromatography on silica gel (0-50% MeOH/DCM) to yield a solid, which concentrated in vacuo purified via reverse phase HPLC over a gradient of 20-55% MeCN with 0.1% TFA The collected fractions were then partitioned between DCM/MeOH and 1N NaOH The organic layer was dried (Na2SO4) concentrated in vacuo