(1R,2S,3R,5R)-3-amino-5-(hydroxymethyl)cyclopentane-1,2-diol

Conditions: temp:90.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a solution of (1R,2S,3R,5R)-3-amino-5-(hydroxymethyl)cyclopentane-1,2-diol.HCl (1.00 g, 5.44 mmol) and 2-amino-4,6-dichloropyrimidine (0.982 g, 5.99 mmol) in isopropyl alcohol (8 mL) was added Et3N (1.90 mL, 13.6 mmol). The reaction was heated to 90° C. for 1 h in an oil bath then cooled, filtered and concentrated in vacuo. The residue was dissolved in CH2Cl2 and purified by flash chromatography (20 to 50% MeOH/CH2Cl2) to afford the title compound as an off-white solid (2.025 g, >99%). LC/MS: Rt=0.81 min ES+ 260 (FA standard). then cooled filtered concentrated in vacuo The residue was dissolved in CH2Cl2 purified by flash chromatography (20 to 50% MeOH/CH2Cl2)

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

Procedure: To a solution of 4-amino-6-chloro-5-nitropyrimidine (320 mg, 1.83 mmol) in N,N-dimethyl formamide (5 mL) and triethylamine (512 μL, 3.67 mmol) was added (1R,2S,3R,5R)-3-Amino-5-hydroxymethyl-cyclopentane-1,2-diol (293 mg, 2.02 mmol). The mixture was stirred at room temperature and monitored by thin layer chromatography until starting material was no longer detected. The reaction mixture was diluted with water (20 mL) and extracted with diethyl ether (2×10 mL). The organic extract was washed with saturated aqueous sodium chloride (20 mL), dried over MgSO4, filtered and concentrated in vacuo to give the crude product. The product was recrystallized from hot methanol/water to give a 298 mg of (1R,2S,3R,5R)-3-(6-amino-5-nitro-pyrimidin-4-ylamino)-5-hydroxymethyl-cyclopentane-1,2-diol as a yellow solid. extracted with diethyl ether (2×10 mL) The organic extract was washed with saturated aqueous sodium chloride (20 mL) dried over MgSO4 filtered concentrated in vacuo to give the crude product The product was recrystallized from hot methanol/water

Conditions: temp:90.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a solution of (1R,2S,3R,5R)-3-amino-5-(hydroxymethyl)cyclopentane-1,2-diol.HCl (1.00 g, 5.44 mmol) and 2-amino-4,6-dichloropyrimidine (0.982 g, 5.99 mmol) in isopropyl alcohol (8 mL) was added Et3N (1.90 mL, 116 mmol). The reaction was heated to 90° C. for 1 h in an oil bath then cooled, filtered and concentrated in vacuo. The residue was dissolved in CH2Cl2 and purified by flash chromatography (20 to 50% MeOH/CH2Cl2) to afford the title compound as an off-white solid (2.025 g, >99%). LC/MS: Rt=0.81 min ES+ 260 (FA standard). then cooled filtered concentrated in vacuo The residue was dissolved in CH2Cl2 purified by flash chromatography (20 to 50% MeOH/CH2Cl2)

Conditions: temp:90.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a solution of (1R,2S,3R,5R)-3-amino-5-(hydroxymethyl)cyclopentane-1,2-diol.HCl (1.00 g, 5.44 mmol) and 2-amino-4,6-dichloropyrimidine (0.982 g, 5.99 mmol) in isopropyl alcohol (8 mL) was added Et3N (1.90 mL, 13.6 mmol). The reaction was heated to 90° C. for 1 h in an oil bath then cooled, filtered and concentrated in vacuo. The residue was dissolved in CH2Cl2 and purified by flash chromatography (20 to 50% MeOH/CH2Cl2) to afford the title compound as an off-white solid (2.025 g, >99%). LC/MS: Rt=0.81 min ES+ 260 (FA standard). then cooled filtered concentrated in vacuo The residue was dissolved in CH2Cl2 purified by flash chromatography (20 to 50% MeOH/CH2Cl2)