Trifluoroacetic acid → 5-{[3-(acetylamino)-2-aminopropyl]amino}-3-[(4,6-dimethylpyridin-2-yl)amino]pyridine-2-carboxamide TFA salt

Participants

Reaction Steps

To a solution of tert-butyl {1-(acetylamino)-3-[(6-{[bis(4-methoxyphenyl)methyl]carbamoyl}-5-[(4,6-dimethylpyridin-2-yl)amino]pyridin-3-yl)amino]propan-2-yl}carbamate in DCM (1 mL) were added TFA (0.2 mL) and triethylsilane (0.146 mL, 0.917 mmol). The reaction mixture was stirred at room temperature for 4 hours, and then concentrated under reduced pressure. The residue was purified via reverse phase HPLC (acetonitrile/water with 0.1% TFA, linear gradient) to give 5-{[3-(acetylamino)-2-aminopropyl]amino}-3-[(4,6-dimethylpyridin-2-yl)amino]pyridine-2-carboxamide TFA salt. MS ESI calc'd for C18H26N7O2 [M+H]+ 372. found 372. 1H NMR (500 MHz, CD3OD) δ 7.84 (d, J=2 Hz, 1H), 7.41 (s, 1H), 7.21 (s, 1H), 6.95 (s, 1H), 3.60-3.42 (m, 5H), 2.54 (s, 3H), 2.43 (s, 3H), 1.99 (s, 3H).

Provenance & Evidence