2-Hydroxyisobutyric acid → HCID 59605996, compound

Participants

Reaction Steps

To a mixture of 4-[2-(2-ethylbenzoimidazol-1-yl)-9-methyl-6-morpholin-4-yl-9H-purin-8-yl]piperidin-4-ol (150 mg, 0.32 mmol), 2-hydroxyisobutyric acid (41 mg, 0.39 mmol) and DIPEA (68 μL, 0.39 mmol) in DCM (2 mL) was added HATU (149 mg, 0.39 mmol). The resulting mixture was allowed to stir at r.t. for 18 h then diluted with DCM and washed with sat. aq. NaHCO3. The organic phase was dried (Na2SO4) and concentrated in vacuo. The resulting residue was purified by column chromatography (Si-PCC, MeOH:EtOAc, 0-20%) affording 790 (60 mg, 34%). LCMS (method I): RT 3.09 min, [M+H]+ 549.3. 1H NMR (DMSO, 400 MHz): δ 8.02-8.01 (1 H, m), 7.64-7.63 (1 H, m), 7.27-7.23 (2 H, m), 5.84 (1 H, s), 5.42 (1 H, s), 4.25 (6 H, brd s), 3.98 (3 H, s), 3.77 (4 H, t, J=4.55 Hz), 3.60 (1 H, brd s), 3.2-3.24 (3 H, m), 2.11-2.10 (2 H, m), 2.06-1.94 (2 H, m), 1.38-1.30 (9 H, m)

Provenance & Evidence