3-(Aminomethyl)-5-fluoro-4-isopropyl-6-methylpyridin-2(1H)-one → tert-Butyl 4-(5-(3-(ethyl(tetrahydro-2H-pyran-4-yl)amino)-5-(((5-fluoro-4-isopropyl-6-methyl-2-oxo-1,2-dihydropyridin-3-yl)methyl)carbamoyl)-4-methylphenyl)pyridin-2-yl)piperazine-1-carboxylate

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Hydrolysis of tert-Butyl 4-(5-(3-(ethyl(tetrahydro-2H-pyran-4-yl)amino)-5-(methoxycarbonyl)-4-methylphenyl)pyridin-2-yl)piperazine-1-carboxylate following the similar methods for examples described earlier resulted in a crude corresponding carboxylic acid 5-(6-(4-(tert-butoxycarbonyl)piperazin-1-yl)pyridin-3-yl)-3-(ethyl(tetrahydro-2H-pyran-4-yl)amino)-2-methylbenzoic acid. This acid was then coupled with 3-(aminomethyl)-5-fluoro-4-isopropyl-6-methylpyridin-2(1H)-one following similar methods described earlier. After purification by reverse phase HPLC (ACN—H2O containing 0.1% formic acid), the titled compound was obtained. 1H-NMR (400 MHz, CD3OD) δ ppm 8.33 (d, J=2.6 Hz, 1H), 7.81 (dd, J=2.6, 8.8 Hz, 1H), 7.41 (d, J=2.0 Hz, 1H), 7.26 (d, J=2.0 Hz, 1H), 6.91 (d, J=8.8 Hz, 1H), 4.54 (s, 2H), 3.92 (m, 2H), 3.46-3.56 (m, 9H), 3.34 (m, 2H), 3.07-3.18 (m, 3H), 2.33 (s, 3H), 2.24 (d, J=3.2 Hz, 3H), 1.74-1.77 (m, 2H), 1.62-1.69 (m, 2H), 1.49 (s, 9H), 1.37 (dd, J=1.6, 6.8 Hz, 6H), 0.90 (t, J=6.8 Hz, 3H); MS (ES) (M+H) 705.7.

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