5-Bromopyridine-2-carboxamide → 5-[1-(1-Isopropyl-3-methyl-1H-pyrazol-4-yl)-3-methyl-2-oxo-2,3-dihydro-1H-imidazo[4,5-c]quinolin-8-yl]-pyridine-2-carboxylic acid amide

関与物質

反応条件

反応手順

A mixture of 1-(1-isopropyl-3-methyl-1H-pyrazol-4-yl)-3-methyl-8-(4,4,5,5-tetramethyl-[1,3,2]dioxaborolan-2-yl)-1,3-dihydro-imidazo[4,5-c]quinolin-2-one (Stage 112.1.1, 34 mg, 0.075 mmol), 5-bromo-pyridine-2-carboxylic acid amide (Combi-Blocks, San Diego, USA, 20 mg, 0.099 mmol), and PdCl2(PPh3)2 (3.5 mg, 0.005 mmol) in DMF (0.9 ml) and 1 M aqueous K2CO3 (0.187 ml) was stirred under argon at 105° C. for 2.5 h. The RM was cooled to rt. The mixture was diluted with MeOH+3 drops TFA and purified directly by Prep.HPLC (H2O (0.1% TFA)/CH3CN 97:3 to 55:45). The fractions containing product were collected together and basified with NaHCO3 (0.3 g), before being concentrated. The resulting layer was extracted with DCM, washed with brine, dried over Na2SO4, filtered and evaporated to dryness to give the title compound as a white solid. (HPLC: tR 2.44 min (Method A); M+H=442 MS-ES; 1H-NMR (d6-DMSO, 400 MHz) 9.00 (s, 1H), 8.75-8.69 (m, 1H), 8.24-8.19 (m, 1H), 8.18-8.07 (m, 2H), 8.07-7.98 (m, 3H), 7.75-7.67 (m, 1H), 7.61-7.56 (m, 1H), 4.61-4.48 (m, 1H), 3.58 (s, 3H), 1.97 (s, 3H), 1.45 (s, 3H), 1.43 (s, 3H))

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