Pyrrolidone carboxylic acid → N-((6-(5-Cyclopropyl-1H-pyrazol-3-ylamino)-5-fluoro-2-((S)-1-(4-fluorophenyl)ethylamino)pyridin-3-yl)methyl)-5-oxopyrrolidine-2-carboxamide

Participants

Reaction Conditions

Reaction Steps

A round bottom flask was charged with (S)-3-(aminomethyl)-N6-(5-cyclopropyl-1H-pyrazol-3-yl)-5-fluoro-N2-(1-(4-fluorophenyl)ethyl)pyridine-2,6-diamine (Example 3; 0.08 g, 0.2 mmol), 5-oxopyrrolidine-2-carboxylic acid loaded TFP resin (1.4 mmol/g loading, 0.2 mmol), and a THF-DCM solution (3 ml) at 0° C. The resulting solution was shaken vigorously at 0° C. for 45 min and filtered. The resulting resin was washed with a THF-DCM solution (1:1, 3×5 ml for 30 min. each). The resulting organic layers were combined and concentrated. The resulting solid was purified by reverse-phase column chromatography (5-50% CH3CN in H2O over 400 ml) to give the title compound (0.013 g, 10%). 1H NMR (400 MHz, CD3OD) δ 7.41-7.32 (m, 2H), 7.21-7.13 (m, 1H), 7.05-6.97 (m, 2H), 6.05 (s, 1H), 5.21-5.02 (m, 1H), 4.34-4.19 (m, 3H), 2.44-2.28 (m, 3H), 2.11-1.98 (m, 1H), 1.88-1.81 (m, 1H), 1.51 (d, J=5.2 Hz, 3H), 0.99-0.86 (m, 2H), 0.69-0.61 (m, 2H). MS: Calcd.: 495. Found: [M+H]+ 496.

Provenance & Evidence