Lithium Hydroxide → 2-((1R,3S)-3-(5-fluoro-2-(5-fluoro-1H-pyrrolo[2,3-b]pyridin-3-yl)pyrimidin-4-ylamino)cyclohexylamino)oxazole-4-carboxylic acid

Participants

Reaction Conditions

Reaction Steps

To a solution of methyl 2-[[(1R,3S)-3-[[5-fluoro-2-[5-fluoro-1-(p-tolylsulfonyl)-pyrrolo[2,3-b]pyridin-3-yl]pyrimidin-4-yl]amino]cyclohexyl]amino]oxazole-4-carboxylate, 71a, (0.028 g, 0.045 mmol) in THF (1 mL) was added LiOH (1 mL of 1 M solution, 1.000 mmol) and the reaction mixture was warmed to 130° C. via microwave irradiation. After heating and stirring for 20 minutes, the mixture was cooled to room temperature. All volatiles were removed under a stream of nitrogen and heat. The crude residue was suspended in MeOH and a few drops of trifluoroacetic acid were added to protonate molecule (solution occurs). The mixture was filtered and purified by reverse phase HPLC (5-95% CH3CN/H2O) to afford 5 mg of the desired product as a TFA salt: 1H NMR (300 MHz, MeOD) δ 8.83 (s, 1H), 8.67-8.09 (m, 4H), 2.67 (s, 3H), 2.18 (m, 5H), 1.34 (d, J=29.6 Hz, 3H); LCMS RT=1.78 (M+1) 456.07.

Provenance & Evidence