反应详情

To a solution of (R)-1-[1-(8-azetidin-3-ylmethyl-9-methyl-6-morpholin-4-yl-9H-purin-2-yl)-1H-benzoimidazol-2-yl]ethanol (57 mg, 0.13 mmol) in DCM (2 mL) was added DIPEA (24 μL, 0.14 mmol) and isobutyryl chloride (14 μL, 0.13 mmol) and the resulting mixture stirred at r.t. for 1 h. The reaction mixture was partitioned between DCM and H2O, the organic phase dried (phase separator) and concentrated in vacuo. The resulting residue was purified by column chromatography (Si—PCC, MeOH:DCM, 0-8%) affording 860 (16 mg, 24%). LCMS (method I): RT 3.46 min, [M+H]+ 519.3. 1H NMR (DMSO, 400 MHz): δ 7.96-7.95 (1 H, m), 7.70-7.69 (1 H, m), 7.30-7.25 (2 H, m), 5.58-5.57 (1 H, m), 5.39 (1 H, d, J=6.34 Hz), 4.36-4.09 (4 H, brd s), 4.35 (1 H, t, J=8.22 Hz), 4.02 (1 H, t, J=8.79 Hz), 3.95-3.94 (1 H, m), 3.80-3.75 (4 H, m), 3.72 (3 H, s), 3.67 (1 H, dd, J=9.77, 5.28 Hz), 3.24-3.23 (3 H, m), 2.45-2.44 (1 H, m), 1.60 (3 H, d, J=6.49 Hz), 0.98 (3 H, d, J=1.77 Hz), 0.97 (3 H, d, J=1.79 Hz)

1. customThe reaction mixture was partitioned between DCM and H2O
2. customthe organic phase dried (phase separator)
3. concentrationconcentrated in vacuo
4. customThe resulting residue was purified by column chromatography (Si—PCC, MeOH:DCM, 0-8%)