1-Methylpiperazine → HCID 178463571, compound

Participants

Reaction Steps

A mixture of 5-fluoro-3-phenyl-2-{(S)-1-[9-(tetrahydropyran-2-yl)-9H-purin-6-ylamino]ethyl}-3H-benzoimidazole-4-carboxylic acid (100 mg, 0.2 mmol), HATU (91 mg, 0.24 mmol), 1-methylpiperazine (33 μL, 0.3 mmol) and DIPEA (69 μL, 0.4 mmol) in DCM (2 mL) was stirred at RT for 1 h. The crude mixture was diluted with water and extracted with DCM. The aqueous phase was further extracted with DCM and the combined organic fractions were dried (MgSO4) and concentrated in vacuo. The resulting residue was dissolved in MeOH (1 mL) and 4N HCl in dioxane (0.25 mL) and the mixture stirred at RT for 30 min. The volatiles were removed under reduced pressure and the resulting residue purified by HPLC (Waters C18 XBridge, on a 20 min gradient 10-90%, 0.1% NH4OH in acetonitrile/water) to afford 202 (59 mg, 59%). LCMS (Method K): RT 2.02 min [M+H]+ 500.1. 1H NMR (DMSO-d6+TFA-D, 400 MHz, 80° C.): δ 12.45 (1H, s), 8.52 (1H, br s), 8.44 (1H, d, J=6.07 Hz), 7.85-7.80 (1H, m), 7.56-7.27 (5H, m), 7.24-7.17 (1H, m), 5.67 (1H, br s), 3.76-3.52 (1H, m), 3.49-3.37 (1H, m), 3.34-2.87 (7H, m), 2.81 (3H, s), 1.71-1.64 (3H, m)

Provenance & Evidence