反应详情

A mixture of 2-(2-ethylbenzoimidazol-1-yl)-9-methyl-6-morpholin-4-yl-9H-purine-8-carboxylic acid (215 mg, 0.53 mmol), 2-chloro-1-methylpyridinium iodide (324 mg, 1.27 mmol) and DIPEA (460 μL, 2.64 mmol) in DMF (2 mL) was stirred for 5 min before the addition of 1-azetidin-3-ylpiperidin-4-ol (140 mg, 0.90 mmol) in DMF (2 mL). The resulting mixture was allowed to stir for 2 h then loaded onto an Isolute® SCX-2 cartridge which was washed with MeOH and the product eluted with 2M NH3/MeOH. The resulting residue was purified by column chromatography (Si-PCC, MeOH:DCM, 0-10%) affording 797 as a pale yellow solid (76 mg, 26%). LCMS (method G): RT 5.26 min, [M+H]+ 546.4. 1H NMR (CDCl3, 400 MHz): δ 8.06-8.06 (1 H, m), 7.76-7.75 (1 H, m), 7.31-7.24 (2 H, m), 4.72-4.71 (1 H, m), 4.50 (1 H, dd, J=10.65, 5.40 Hz), 4.30-4.20 (1 H, m), 4.14 (3 H, s), 4.14-4.07 (1 H, m), 3.88 (4 H, t, J=4.71 Hz), 3.81 (1 H, s), 3.37 (2 H, q, J=7.47 Hz), 3.28-3.27 (1 H, m), 2.72 (2 H, d, J=27.26 Hz), 2.25-2.10 (2 H, m), 2.01-1.91 (2 H, m), 1.68-1.60 (5 H, m), 1.46-1.43 (4 H, m)

1. washwas washed with MeOH
2. washthe product eluted with 2M NH3/MeOH
3. customThe resulting residue was purified by column chromatography (Si-PCC, MeOH:DCM, 0-10%)