Hydrochloric Acid → N-{4-[(3R,4R,5S)-3-Amino-4-hydroxy-5-methylpiperidin-1-yl]-2,3-dihydrofuro[2,3-b]pyridin-5-yl}-6-[2,6-difluoro-4-(1-hydroxy-1-methylethyl)phenyl]-5-fluoropyridine-2-carboxamide

Participants

Reaction Steps

The amide intermediate prepared as described above was treated with 4.0 M HCl in dioxane (8 mL, 30 mmol) at room temperature overnight. The reaction mixture was concentrated under reduced pressure. The resulting residue was purified by preparative LCMS (Waters SunFire™ C18 column, 19 mm×100 mm, 5 μm particle size, eluting with a gradient of MeCN/water containing 0.1% NH4OH, at flow rate of 30 mL/min.) to give the title compound as a white powder. LCMS calc. for C28H31F3N5O4 (M+H)+ m/z=558.2. found: 558.0. 1H NMR (300 MHz, DMSO-d6) δ 10.17 (s, 1H), 8.69 (s, 1H), 8.32 (m, 1H), 8.16 (m, 1H), 7.32 (d, J=9.0 Hz, 2H), 5.27 (br s, 1H), 4.49 (m, 3H), 3.05 (m, 1H), 2.96 (m, 1H), 2.66-2.42 (m, 5H), 1.47 (s, 6H), 0.68 (d, J=6.6 Hz, 3H) ppm.

Provenance & Evidence