2-Hydroxyisobutyric acid → HCID 59605285, compound

Participants

Reaction Steps

A mixture of 8-(2,2-dimethylpiperazin-1-ylmethyl)-2-(2-ethylbenzoimidazol-1-yl)-9-methyl-6-morpholin-4-yl-9H-purine (100 mg, 0.20 mmol), 2-hydroxyisobutyric acid (24 mg, 0.23 mmol), HATU (85 mg, 0.22 mmol) and DIPEA (40 μL, 0.23 mmol) in DCM (2 mL) was allowed to stir at r.t. for 17 h. The reaction mixture was 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, 0-3%) affording 741 as a white solid (55 mg, 46%). LCMS (method I): RT 2.89 min, [M+H]+ 576.3. 1H NMR (CDCl3, 400 MHz): δ 8.02-8.02 (1 H, m), 7.76-7.75 (1 H, m), 7.33-7.22 (2 H, m), 4.40-4.20 (5 H, m), 3.92 (3 H, s), 3.88-3.83 (5 H, m), 3.63 (2 H, s), 3.53 (2 H, s), 3.36 (2 H, q, J=7.48 Hz), 2.59-2.53 (2 H, m), 1.50 (6 H, s), 1.45 (3 H, t, J=7.48 Hz), 1.23 (6 H, s)

Provenance & Evidence