Pyridine → HCID 11611121, compound

Participants

Reaction Steps

To a solution of N-(1-azabicyclo[2.2.2]oct-3-yl)-6-amino-2-phenylbenzoxazole-4-carboxamide (35 mg, 0.09 mmol) in methylene chloride (1 mL) was added pyridine (11 μL, 0.14 mmol) and acetic anhydride (11 μL, 0.10 mmol) at 0° C. and stirred for 30 min, then allowed to warm to room temperature for 1 h. The reaction mixture was quenched with saturated solution of sodium bicarbonate and concentrated under reduced pressure. The crude was purified by semi-preparative HPLC to afford N-(1-azabicyclo[2.2.2]oct-3-yl)-6-acetylamino-2-phenylbenzoxazole-4-carboxamide (13 mg, 44%) as a light yellow solid: 1H NMR (500 MHz, CDCl3) δ 9.58 (d, J=7.4 Hz, 1H), 8.73 (d, J=1.9 Hz, 1H), 8.20 (d, J=6.8 Hz, 1H), 8.13 (s, 1H), 7.81 (d, J=1.7 Hz, 1H), 7.55-7.50 (m, 4H), 4.35-4.27 (m, 1H), 3.57-3.48 (m, 1H), 3.16-3.03 (m, 2H), 2.97-2.82 (m, 2H), 2.27 (s, 3H), 2.17-2.05 (m, 2H), 1.85-1.60 (m, 3H); MS (ESI+) m/z 405 (M+H); HPLC>99% (AUC), tR=23.81 min.

Provenance & Evidence