反应详情

cHCl was added to a stirred solution of 7-((benzyl((2,2-dimethyl-1,3-dioxan-5-yl)methyl)amino)methyl)-3H-pyrrolo[3,2-d]pyrimidin-4(5H)-one (50 mg, 131 μmol) in methanol (2 mL). After 0.5 h the reaction was concentrated in vacuo and co-distilled with methanol. The crude reaction was absorbed as a methanol solution onto silica gel and purified by chromatography on silica eluting with 20% 7N NH3/MeOH to afford, presumably, 7-(((2,2-dimethyl-1,3-dioxan-5-yl)methylamino)methyl)-3H-pyrrolo[3,2-d]pyrimidin-4(5H)-one (19 mg, 42.4% yield) as a white solid, which was committed to the next step without characterisation. A solution of 7-(((2,2-dimethyl-1,3-dioxan-5-yl)methylamino)methyl)-3H-pyrrolo[3,2-d]pyrimidin-4(5H)-one (19 mg, 55.5 μmol) and 10% palladium on carbon (56 mg, 526 μmol) in water (2 mL, 1.11E+05 μmol) was stirred under an atmosphere of hydrogen (0.101 mg, 50.2 μmol) for 72 h. The reaction was filtered through Celite® and the filtrate concentrated in vacuo to yield a crude residue which was purified by chromatography on silica gel, eluting with 5:4.5:0.5 DCM:MeOH:NH4OH to afford 7-((3-hydroxy-2-(hydroxymethyl)propylamino)methyl)-3H-pyrrolo[3,2-d]pyrimidin-4(5H)-one hydrochloride (4 mg, 27.6% yield) as a white solid. 13C NMR (D2O) δ 152.6, 145.0, 133.2, 131.7, 118.4, 102.8, 60.8 (2×CH2), 47.6, 41.1, 39.8.

1. concentrationAfter 0.5 h the reaction was concentrated in vacuo and co-distilled with methanol
2. customThe crude reaction
3. customwas absorbed as a methanol solution onto silica gel
4. custompurified by chromatography on silica eluting with 20% 7N NH3/MeOH
5. customto afford