4-(2-Aminoethyl)piperidine, 4-BOC protected → 6-{[(2-{1-[3-fluoro-6-(methyloxy)-4-quinolinyl]-4-piperidinyl}ethyl)amino]methyl}-2H-pyrido[3,2-b][1,4]oxazin-3(4H)-one

Participants

Reaction Steps

The title compound (100 mg, 33%) was prepared as a yellow solid according to Example 1, except substituting the following three reagents: 1,1-dimethylethyl [2-(4-piperidinyl)ethyl]carbamate (1 g, 4.38 mmol) [prepared according to Ambler, J.; et. al. Bioorg. Med. Chem. Lett. 1999, 9, 9, 1317.] for 1,1-dimethylethyl [2-(1-piperazinyl)ethyl]carbamate, 4-bromo-3-fluoro-6-(methyloxy)quinoline (2.25 g, 8.77 mmol) for 8-bromo-7-fluoro-2-(methyloxy)-1,5-naphthyridine and 3-oxo-3,4-dihydro-2H-pyrido[3,2-b][1,4]oxazine-6-carbaldehyde (117 mg, 0.657 mmol) for 3-oxo-3,4-dihydro-2H-pyrido[3,2-b][1,4]thiazine-6-carbaldehyde: LCMS (ES) m/e 482 (M+H)+; 1H NMR (400 MHz, CD3OD) δ 8.47 (d, J=4.5 Hz, 1H), 7.87 (d, J=9.1 Hz, 1H), 7.40 (d, J=2.7 Hz, 1H), 7.34 (dd, J=2.7, 6.3 Hz, 1H), 7.29 (d, J=8.0 Hz, 1H), 6.99 (d, J=8.0 Hz, 1H), 4.66 (s, 2H), 3.97 (s, 3H), 3.79 (s, 2H), 3.35-3.50 (m, 2H), 3.26-3.30 (m, 2H), 2.71-2.75 (m, 2H), 1.87-1.90 (m, 2H), 1.62-1.66 (m, 3H), 1.52-1.55 (m, 2H).

Provenance & Evidence