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ChemicalBook CAS DataBase List TUBERCIDIN

TUBERCIDIN synthesis

11synthesis methods
-

Yield:69-33-0 65 %

Reaction Conditions:

with ammonium hydroxide in 1,4-dioxane at 110;Sealed tube;Inert atmosphere;

Steps:

Synthesis of (2R,3R,4S,5R)-2-(4-amino-7H-pyrrolo[2,3-d]pyrimidin-7-yl)-5-(hydroxymethyl)tetrahydrofuran-3,4-diol (tubercidin) 15

The protected intermediate 14 (0.6 mmol, 1 eq.) was dissolved in 1,4-dioxane (4 mL), followed by theaddition of NH4OH (4 mL)). The reaction mixture was stirred at 110 °C in a sealed tube for 4 hours, thenconcentrated under vacuum. The crude residue was purified by automated flash column chromatographyeluting with DCM-MeOH 100:0 v/v increasing to DCM-MeOH 80:20 v/v in 15 CV to afford the titlecompound as an off-white solid in 65% yield. 1H-NMR (DMSO-d6), d: 8.03 (s, 1H), 7.32 (d, J= 3.6 Hz, 1H),7.04 (bs, 2H), 6.58 (d, J= 3.6 Hz, 1H), 5.97 (d, J=6.3 Hz, 1H, H-1’), 5.36-5.28 (m, 1H, 2’-OH), 5.28-5.20 (m, 1H,5’-OH), 5.08 (bs, 1H, 3’-OH), 4.43-4.38 (m, 1H, H-2’), 4.09-4.05 (m, 1H, H-3’), 3.88 (m, 1H, H-4’), 3.61 (m, 1H,H-5’), 3.55-3.48 (m, 1H, H-5’).

References:

Salerno, Martina;Varricchio, Carmine;Bevilacqua, Federica;Jochmans, Dirk;Neyts, Johan;Brancale, Andrea;Ferla, Salvatore;Bassetto, Marcella [European Journal of Medicinal Chemistry,2023,vol. 246,art. no. 114942] Location in patent:supporting information

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