Methylamine → HCID 71548739, compound

Participants

Reaction Steps

To a stirred mixture of 3-((2-(((1R,2R)-2-hydroxycyclohexyl)amino)benzo[d]thiazol-6-yl)methyl)-3H-imidazo[4,5-b]pyridine-6-carboxylic acid (70 mg, 0.165 mmol) from Example 81 and TEA (67 mg, 0.660 mmol) in anhydrous THF (2.5 mL) at rt was added methylamine (2 M solution in THF, 413 μL, 0.825 mmol) followed by benzotriazol-1-yloxytris(dimethylamino)phosphonium hexafluorophosphate (109 mg, 0.248 mmol). The mixture was stirred at rt for 4.5 h. The mixture was purified by reverse-phase HPLC using a mixture of water (5% CH3CN, 0.05% HOAc) and CH3CN (0.05% HOAc) as the mobile phase and Varian Pursuit XRs diphenyl column as the stationary phase to afford 3-((2-(((1R,2R)-2-hydroxycyclohexyl)amino)benzo[d]thiazol-6-yl)methyl)-N-methyl-3H-imidazo[4,5-b]pyridine-6-carboxamide (26 mg, 36%) as a white solid. 1H NMR (300 MHz, DMSO-d6) δ 8.86 (d, J=1.88 Hz, 1H), 8.69 (s, 1H), 8.59 (d, J=4.52 Hz, 1H), 8.49 (d, J=1.88 Hz, 1H), 7.97 (d, J=7.54 Hz, 1H), 7.67 (d, J=1.13 Hz, 1H), 7.19-7.32 (m, 2H), 5.51 (s, 2H), 4.73 (br. s., 1H), 3.51 (m, 1H), 3.30 (m, 1H), 2.82 (d, J=4.33 Hz, 3H), 2.02 (m, 1H), 1.88 (m, 1H), 1.55-1.65 (m 2H), 1.10-1.30 (m, 4H). LCMS (ESI) m/z 437 (M+H)+.

Provenance & Evidence