3-(2-fluoroethoxy)-1H-pyrazolo[3,4-b]pyridin-5-amine → 6-chloro-2-fluoro-N-(3-(2-fluoroethoxy)-1H-pyrazolo[3,4-b]pyridin-5-yl)-3-(propylsulfonamido)benzamide

Participants

Reaction Steps

6-Chloro-2-fluoro-N-(3-(2-fluoroethoxy)-1H-pyrazolo[3,4-b]pyridin-5-yl)-3-(propylsulfonamido)benzamide was prepared according to the general procedure of Example 78, Step D, using 3-(2-fluoroethoxy)-1H-pyrazolo[3,4-b]pyridin-5-amine (0.035 g, 0.18 mmol) and 6-chloro-2-fluoro-3-(propylsulfonamido)benzoic acid (0.058 g, 0.20 mmol). The crude material was purified by silica gel flash column chromatography (5 to 7% 7N NH3-MeOH in CH2Cl2) to afford the desired product which was triturated with Et2O (51 mg, 60% yield). LRMS (ACPI pos) m/e 474.0 (M+1). 1H NMR (400 MHz, d6-DMSO) δ 12.68 (s, 1H), 11.10 (s, 1H), 9.99 (br s, 1H), 8.58 (d, 1H), 8.54 (d, 1H), 7.55 (t, 1H), 7.46 (d, 1H), 4.91 (m, 1H), 4.78 (m, 1H), 4.63 (m, 1H), 4.55 (m, 1H), 3.16 (t, 2H), 1.75 (m, 2H), 0.99 (t, 3H); 19F NMR (376 MHz, DMSO) δ−124.0, −223.1.

Provenance & Evidence