Acetic Acid → N-((4,6-dimethyl-2-oxo-1,2-dihydropyridin-3-yl)methyl)-5-(ethyl(tetrahydro-2H-pyran-4-yl)amino)-3'-fluoro-4-methyl-4'-(morpholinomethyl)[1,1'-biphenyl]-3-carboxamide

Participants

Reaction Steps

To a stirred solution of N-((4,6-dimethyl-2-oxo-1,2-dihydropyridin-3-yl)methyl)-5-(ethyl(tetrahydro-2H-pyran-4-yl)amino)-3′-fluoro-4′-formyl-4-methyl-[1,1′-biphenyl]-3-carboxamide (285 mg, 0.55 mmol) and morpholine (149 mg, 1.64 mmol) in dichloroethane (5 mL), acetic acid (0.2 mL, 3.29 mmol) was added and reaction stirred at room temperature for 30 minutes. Then sodium triacetoxyborohydride (349 mg, 1.64 mmol) was added to the reaction mixture at 0° C., allowed to attain room temperature and stirring continued for overnight. On completion, reaction mixture was diluted with dichloromethane, washed with water, saturated aqueous sodium bicarbonate solution and dried over sodium sulphate. Removal of the solvent under reduced pressure followed by column chromatographic and prep. HPLC purification afforded the title compound (70 mg, 20%). LCMS: 591.45 (M+1)+; HPLC: 98.96% (@254 nm) (Rt; 4.034; Method: Column: YMC ODS-A 150 mm×4.6 mm×5μ; Mobile Phase: A; 0.05% TFA in water/B; 0.05% TFA in acetonitrile; Inj. Vol: 10 μL, Col. Temp.: 30° C.; Flow rate: 1.4 mL/min.; Gradient: 5% B to 95% B in 8 min, Hold for 1.5 min, 9.51-12 min 5% B); 1H NMR (DMSO-d6, 400 MHz) δ 11.5 (bs, 1H), 10.1 (bs, 1H), 8.24 (s, 1H), 7.66-7.73 (m, 3H), 7.54 (s, 1H), 7.36 (s, 1H), 5.88 (s, 1H), 4.44 (s, 2H), 4.30 (m, 5H), 3.96 (m, 2H), 3.66-3.86 (m, 6H), 3.17-3.34 (m, 4H), 2.27 (s, 3H), 2.22 (s, 3H), 2.11 (s, 3H), 1.57-1.67 (m, 4H), 0.84 (t, 3H, J=6 Hz).

Provenance & Evidence