Potassium Carbonate → 5-Amino-3-((2R,3R,5S)-3-azido-5-((S)-1-hydroxyethyl)tetrahydrofuran-2-yl)thiazolo[4,5-d]pyrimidine-2,7(3H,6H)-dione

Participants

Reaction Steps

To a solution of 1-[(2S,4R,5R)-5-(5-amino-2,7-dioxo-6H-thiazolo[4,5-d]pyrimidin-3-yl)-4-azido-tetrahydrofuran-2-yl]ethyl benzoate (compound 25l, 600 mg, crude) in MeOH (8 mL) was added K2CO3 (187 mg, 1.4 mmol). After being stirred at room temperature for 5 hours, the reaction mixture was concentrated in vacuo and the residue was purified by preparative HPLC to afford 30 mg of 5-amino-3-[(2R,3R,5S)-3-azido-5-(1-hydroxyethyl)tetrahydrofuran-2-yl]-6H-thiazolo[4,5-d]pyrimidine-2,7-dione (Example 25) as a white solid.

Provenance & Evidence