Trifluoroacetic acid → 9-[(2S)-2-aminopropyl]-2-(methylamino)-9H-pyrido[2,3-b]indole-3-carboxamide

Participants

Reaction Steps

tert-butyl {(1S)-2-[3-(aminocarbonyl)-2-(methylamino)-9H-pyrido[2,3-b]indol-9-yl]-1-methylethyl}carbamate xxxii-a (20 mg, 0.051 mmol) was deprotected according to the TFA procedure detailed in the preparation of 30 to afford the title compound as the trifluoroacetate salt (45, 7 mg, 35%). NH4OAc standard conditions. DAD Retention time=5.33 min. M+H=298. 1H NMR (300 MHz, CDCl3): δ 9.04 (br s, 1H), 8.76 (s, 1H), 8.02 (br s, 4H), 7.82 (d, J=7.9 Hz, 1H), 7.57 (d, J=8.5 Hz, 1H), 7.35 (br dd, J=7.3, 7.3 Hz, 1H), 7.23 (br dd, J=7.3, 7.3 Hz, 1H), 4.48-4.44 (m, 1H), 3.04 (s, 3H), 3.57-3.52 (m, 2H), 1.21 (d, J=6.1 Hz, 3H).

Provenance & Evidence