6-(4-(2-((Tert-butyldimethylsilyl)oxy)ethoxy)-2,6-difluorophenyl)-5-fluoropicolinic acid → N-(5-((2S,5R,6R)-5-Amino-6-fluorooxepan-2-yl)-1-methyl-1H-pyrazol-4-yl)-6-(2,6-difluoro-4-(2-hydroxyethoxy)phenyl)-5-fluoropicolinamide

Participants

Reaction Steps

Following the procedure for Example 111 starting from tert-butyl ((3R,4R,7S)-3-fluoro-7-(1-methyl-4-nitro-1H-pyrazol-5-yl)oxepan-4-yl)carbamate (Intermediate 24), and replacing 5-((tert-butoxycarbonyl)amino)-2-(2,6-difluorophenyl)thiazole-4-carboxylic acid with 6-(4-(2-((tert-butyldimethylsilyl)oxy)ethoxy)-2,6-difluorophenyl)-5-fluoropicolinic acid (see US2012/225062) gave 190 as a white solid (29 mg, 62%). 1H NMR (400 MHz, d6-DMSO) δ 10.59 (s, 1H), 8.40 (dd, J=8.6, 3.9 Hz, 1H), 8.27 (dd, J=8.6, 8.6 Hz, 1H), 8.10 (s, 1H), 7.15 (d, J=10.5 Hz, 2H), 5.09 (dd, J=8.4, 3.6 Hz, 1H), 4.86-4.83 (d, J=48 Hz, 1H), 4.28 (t, J=4.8 Hz, 2H), 4.12-3.92 (m, 2H), 3.92-3.86 (m, 5H), 3.70-3.38 (br s, 1H), 3.36-3.24 (m, 1H), 2.33-2.25 (m, 1H), 2.02-1.87 (m, 1H), 1.87-1.75 (m, 1H), 1.75-1.63 (m, 1H). Alkyl NH2 not observed. LCMS (ES+) m/z 524 (M+1).

Provenance & Evidence