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

Participants

Reaction Conditions

Reaction Steps

To a solution of (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, 0.21 mmol) in DCM-THF mixture (1:1, 4 ml) at 0° C. was added 1.0 eq. of isoxazole-5-carboxylic acid loaded TFP resin. The resulting mixture was stirred vigorously for 1 hour at 0° C., and then filtered. The remaining resin was then washed with DCM-THF (1:1, 2×10 ml portions) for 30 min, and then filtered. The combined filtrates were concentrated, and the resulting oil was purified by column chromatography to give the title compound (3.4 mg, 4%). MS: Calcd.: 479. Found: [M+H]+ 480.

Provenance & Evidence