1,5-Dimethylpyrazole-4-boronic acid → 5-amino-N-(5-((2S,5R,6R)-5-amino-6-fluorooxepan-2-yl)-1-methyl-1H-pyrazol-4-yl)-2-(1,5-dimethyl-1H-pyrazol-4-yl)thiazole-4-carboxamide

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Reaction Steps

Following the procedure for Example 101 starting from tert-butyl N-[2-bromo-4-[[5-[(2S,5R,6R)-5-(tert-butoxycarbonylamino)-6-fluoro-oxepan-2-yl]-1-methyl-pyrazol-4-yl]carbamoyl]thiazol-5-yl]carbamate (Intermediate 88), and replacing 3,6-dihydro-2H-pyran-4-boronic acid pinacol ester with (1,5-dimethyl-1H-pyrazol-4-yl)boronic acid gave 255. 1H NMR (400 MHz, DMSO-d6) δ 9.15 (s, 1H), 7.84 (s, 1H), 7.65 (s, 1H), 7.25 (s, 2H), 4.96-4.76 (m, 2H), 4.16-3.89 (m, 2H), 3.79 (s, 3H), 3.72 (s, 3H), 3.29-3.15 (m, 1H), 2.56 (s, 3H), 2.11-2.00 (m, 1H), 1.90-1.71 (m, 4H), 1.66-1.58 (m, 1H). LCMS (ES+) m/z 449 (M+1).

Provenance & Evidence