4-Methylmorpholine → HCID 49841097, compound

Participants

Reaction Steps

(R)-2-(6-Fluoro-3-oxopyrrolo[4,3,2-de][2,6]naphthyridin-4(1H,3H,5H)-yl)-3-methylbutanoic acid (15 mg, 0.051 mmol), HOBt hydrate (9.46 mg, 0.062 mmol), and EDC hydrochloride (14.81 mg, 0.077 mmol) were combined in DMF (2 mL). N-methyl-2-(methylsulfonyl)ethanamine (10.60 mg, 0.077 mmol) and 4-methylmorpholine (0.023 mL, 0.206 mmol) were added, and the reaction mixture was stirred at room temperature for 2 h. The product was purified by preparative HPLC (10-45% AcCN/H2O with 0.035% TFA), concentrated in vacuo, and lyophilized to afford the title compound as a white solid (12 mg, 57% yield). 1H NMR (500 MHz, CD3OD) δ 0.77 (d, J=6.5 Hz, 3H), 0.95 (d, J=6.5 Hz, 3H), 2.41-2.49 (m, 1H), 2.97 (s, 3H), 3.05 (s, 3H), 3.36 (t, J=6.5 Hz, 2H), 3.78 (t, J=6.5 Hz, 2H), 4.81-4.96 (m, 2H), 5.36 (d, J=11.0 Hz, 1H), 7.97 (d, J=2.5 Hz, 1H), 8.23 (d, J=2.5 Hz, 1H), 12.39 (s, 1H). [M+H] calc'd for C18H23FN4O4S, 411; found, 411.

Provenance & Evidence