Nicotinic Acid → 5,7-Dimethoxy-2-(4-(4-nicotinoylpiperazin-1-yl)phenyl)quinazolin-4(3H)-one

Participants

Reaction Steps

To a solution of nicotinic acid (0.066 g, 0.54 mmol) in THF (20 mL) was added HOBt (0.079 g, 0.59 mmol), EDCl (0.113 g, 0.59 mmol), Et3N (0.08 mL, 0.59 mmol) and 5,7-dimethoxy-2-(4-(piperazin-1-yl)phenyl)quinazolin-4(3H)-one (0.200 g, 0.54 mmol). The resulting solution was stirred overnight at room temperature. The solution was concentrated in vacuo and the resulting solid was purified by flash chromatography on silica gel, eluting with 10% to 60% of 92:7:1 CHCl3/MeOH/concentrated NH4OH in CH2Cl2, to afford the title compound (0.050 g, 19%): 1H NMR (300 MHz, DMSO-d6): δ 11.79 (s, 1H), 8.59-8.78 (m, 2H), 8.12 (d, J=8.8 Hz, 2H), 7.82-7.99 (m, 1H), 7.37-7.60 (m, 1H), 7.04 (d, J=9.1 Hz, 2H), 6.69 (s, 1H), 6.47 (s, 1H), 3.63-3.97 (m, 8H), 3.20-3.63 (m, 6H). APCI MS m/z 472 [M+H]+.

Provenance & Evidence