HCID 86698152, compound → HCID 86698153, compound

Participants

Reaction Conditions

Reaction Steps

In a 100 mL dry flask, 4-{5-chloro-2-[(1-cyclopropyl-2-oxo-1,2-dihydro-3H-imidazo[4,5-c]pyridin-3-yl)methyl]-1H-imidazo[4,5-b]pyridin-1-yl}butanal 67-1 (1.5 g, 3.6 mmol) was dissolved in dry THF (50 mL) and cooled until −20° C. under N2 atmosphere. An excess methylmagnesium iodide (3M in THF) (1.8 mL, 5.5 mmol, 1.5 eq.) was then gently added dropwise to the cooled solution via syringe. The solution was warmed up until ambient temperature and stirred for 4 hours. The solution was diluted with 30 mL NaHCO3 solution and extracted with EtOAC (30 mL). The combined organics were dried (MgSO4) and concentrated in vacuo. The crude was purified on RP SunFire Prep column (C18 OBD-10 μm, 30×150 mm), using a 0.25% NH4HCO3 solution in water-MeOH solution to give 350 mg (22%) of 3-{[5-chloro-1-(4-hydroxypentyl)-1H-imidazo[4,5-b]pyridin-2-yl]methyl}-1-cyclopropyl-1,3-dihydro-2H-imidazo[4,5-c]pyridin-2-one (67) as a white solid. 1H NMR (400 MHz, CHLOROFORM-d) δ ppm 0.99-1.05 (m, 2H) 1.13-1.22 (m, 5H) 1.43-1.57 (m, 2H) 1.77-1.91 (m, 2H) 2.11 (br. s, 1H) 2.89-2.98 (m, 1H) 3.81-3.90 (m, 1H) 4.32-4.50 (m, 2H) 5.40 (s, 2H) 7.13 (dd, J=5.27, 0.75 Hz, 1H) 7.23 (d, J=8.53 Hz, 1H) 7.65 (d, J=8.28 Hz, 1H) 8.34 (d, J=5.27 Hz, 1H) 8.75 (s, 1H); LCMS m/z=427 (M+H)+

Provenance & Evidence