反应详情

To a stirred solution of (±)-trans-4-(aminomethyl)-1-{2-[3-fluoro-6-(methyloxy)-1,5-naphthyridin-4-yl]ethyl}-3-pyrrolidinol (0.62 g, 1.94 mmole) in dry CH2Cl2 (25 mL) and dry EtOH (10 mL) at RT was added 3-oxo-3,4-dihydro-2H-pyrido[1,4]thiazine-6-carboxaldehyde (0.38 g, 1.94 mmole). After 24 h, at RT was added NaBH(OAc)3 (0.61 g, 2.91 mmole). After 2 h, the reaction solution was concentrated under vacuum and purified on silica (CHCl3/MeOH, 9:1 containing 5% NH4OH) to afford the title compound (0.60 g, 62%) as light yellow solid: 1H NMR (400 MHz, CDCl3) δ 8.60 (s, 1H), 8.15 (d, J=9.0 Hz, 1H), 7.58 (d, J=7.8 Hz, 1H), 7.05 (d, J=9.0 Hz, 1H), 6.94 (d, J=7.8 Hz, 1H), 4.11 (s, 3H), 4.05 (m, 4H), 3.52 (m, 4H), 3.42 (s, 2H), 3.19 (m, 2H), 2.98 (m, 2H), 2.70 (m, 2H). LC-MS (ES) m/e 499 (M+H)+.

1. waitAfter 2 h
2. concentrationthe reaction solution was concentrated under vacuum
3. custompurified on silica (CHCl3/MeOH, 9:1 containing 5% NH4OH)