Acetic Acid → 5-Amino-3-beta-D-ribofuranosyl-3H-thiazolo[4,5-d]pyrimidin-2-one

To a solution of 78 (0.52 g, 1.22 mmol) in MeOH (20 mL) was added K2CO3 (25 mg, 0.18 mmol). The reaction was stirred at room temperature overnight, then neutralized with AcOH (21 μL, 0.36 mmol). The resulting mixture was stirred at room temperature for additional 30 min, concentrated, and triturated with H2O (2 ml) to afford 0.33 g of compound 79 (89%) as a white solid: mp 220° C. (Dec); 1H (400 MHz, d6-DMSO) δ 8.34 (s, 1H), 6.85 (s, 2H), 5.90 (d, J=4.8 Hz, 1H), 5.31 (d, J=5.6 Hz, 1H), 4.98 (d, J=5.6 Hz, 1H), 4.81 (q, J=5.2 Hz, 1H), 4.67 (t, J=6.0 Hz, 1H), 4.11 (q, J=5.2 Hz, 1H), 3.77 (dd, J=10.8, 4.8 Hz, 3H), 358 (m, 1H), 3.44 (m, 1H); MS (+)-ES [M+H]+ m/z 301.1. Elemental Analysis calc'd for C10H12N4O5S.0.3H2O: C, 39.29; H, 4.15; N, 18.33; S10.49. Found: C, 39.51; H, 4.18; N, 17.95; S, 10.27.

1. stirringThe resulting mixture was stirred at room temperature for additional 30 min
2. concentrationconcentrated
3. customtriturated with H2O (2 ml)

ORD-Eintrag

ord-5d49f9c234d5488e963b8d13637dbdaa

Quelldatensatz

uspto-grants-2010_06

DOI

10.6084/m9.figshare.5104873.v1

Patentnummer

US07745415B2