反应详情

N-[4-(2-Amino-[1,2,4]triazolo[1,5-a]pyridin-5-yl)-phenyl]-methanesulfonamide was prepared from 5-bromo-[1,2,4]triazolo[1,5-a]pyridin-2-ylamine (1.80 g, 8.45 mmol) and 4-methylsulfonylaminophenyl boronic acid (2.0 g, 9.30 mmol), in a manner analogous to Step 73c. The residue was purified on a 40 g Isco silica gel column using a gradient of 0-15% methanol in dichloromethane as an eluent. N-[4-(2-Amino-[1,2,4]triazolo[1,5-a]pyridin-5-yl)-phenyl]-methanesulfonamide (389 mg, 15%) was isolated as a beige powder. 1H NMR (400 MHz, (D3C)2SO, δ, ppm): 10.06 (s, 1H), 7.96 (d, J=10.7 Hz, 2H), 7.49 (t, J=17.1 Hz, 7.5 Hz, 1H), 7.34 (d, J=8.6 Hz, 3H), 7.00 (d, J=7.5 Hz, 1H), 6.01 (s, 2H), 3.09 (s, 3H). MS=304 (MH)+. 84b) N-[4-(2-Amino-[1,2,4]triazolo[1,5-a]pyridin-5-yl)-phenyl]-methanesulfonamide (162 mg, 0.534 mmol) and 1-(4-bromo-phenyl)-4-methyl-piperazine (150 mg, 0.587 mmol) were combined in a manner analogous to Example 77 to yield N-(3-{2-[4-(4-methyl-piperazin-1-yl)-phenylamino]-[1,2,4]triazolo[1,5-a]pyridin-5-yl}-phenyl)-methanesulfonamide TFA salt (14 mg, 6%) as a yellow powder following purification via preparative HPLC on a Phenomenex Luna column using 0.1% TFA in MeCN and 0.1% TFA in Water as eluent. 1H NMR (400 MHz, (D3C)2SO, δ, ppm): 10.13 (s, 1H), 9.40 (s, 1H), 8.05 (d, J=7.5 Hz, 1H), 7.58 (m, 3H), 7.39 (d, J=7.5 Hz, 2H), 7.27 (d, J=8.6 Hz, 2H), 6.95 (d, J=9.6 Hz, 2H), 4.16 (m, 2H), 3.68 (m, 2H), 3.20 (m, 3H), 3.12 (s, 3H), 2.86 (m, 5H). MS=478 (MH)+.

1. customThe residue was purified on a 40 g Isco silica gel column