1,4-Dioxane hydrochloride → N-(4-{3-[4-(1-aminocyclobutyl)phenyl]-9H-imidazo[1,2-d]pyrido[2,3-b][1,4]benzodiazepin-2-yl}phenyl)-N-methylacetamide trihydrochloride

Participants

Reaction Steps

tert-Butyl {1-[4-(2-{4-[acetyl(methyl)amino]phenyl}-9H-imidazo[1,2-d]pyrido[2,3-b][1,4]benzodiazepin-3-yl)phenyl]cyclobutyl}carbamate (30 mg, 0.048 mmol) in MeOH (0.5 mL) was added 4N HCl-dioxane (2 mL) and stirred at room temperature for 20.5 hours. The mixture was concentrated to afford the desired product (28 mg, 93%) as a yellow solid. 1HNMR (DMSO-d6) 400 MHz δ: 8.68 (br s, 2H), 8.62 (s, 1H), 8.10 (dd, J=4.9 Hz and 1.4 Hz, 1H), 7.96 (dd, J=7.7 Hz and 1.4 Hz, 1H), 7.56 (d, J=8.6 Hz, 3H), 7.37 (d, J=8.6 Hz, 2H), 7.31-7.26 (m, 2H), 7.13 (t, J=8.6 Hz, 1H), 6.88 (dd, J=8.0 Hz and 1.1 Hz, 1H), 6.73 (dd, J=8.0 Hz and 4.6 Hz, 1H), 3.73-3.65 (m, 1H), 3.51-3.45 (m, 1H), 3.17-3.13 (m, 2H), 2.59-2.47 (m, 3H), 2.23-2.15 (m, 2H), 1.88-1.75 (m, 3H). LCMS: 527 [M+H].

Provenance & Evidence