3-Pentyl-8-azabicyclo[3.2.1]octane → (R)-6-Methoxy-4-[2-methyl-3-(3-pentyl-8-aza-bicyclo[3.2.1]oct-8-yl)propyl]-4H-benzo[1,4]oxazin-3-one

Participants

Reaction Steps

The compound (S)-4-(3-Iodo-2-methylpropyl)-6-methoxy-4H-benzo[1,4]oxazin-3-one (111MF36) (0.226 g, 0.63 mmol) and 3-pentyl-8-azabicyclo[3.2.1]octane (0.101 g, 0.56 mmol) were mixed according to GP16. CC (SiO2; heptane/EtOAc 4:1-4) and prep HPLC gave the title compound (111MF41) (0.101 g, 39%). 1H NMR (CDCl3) δ 6.89 (d, J=8.8 Hz, 1H), 6.81 (d, J=2.8 Hz, 1H), 6.49 (dd, J=8.8 Hz, J=2.8 Hz, 1H), 4.60-4.46 (m, 2H), 4.01 (d, J=6.8 Hz, 2H), 3.77 (s, 3H), 3.15-3.02 (m, 2H), 2.32-2.26 (m, 1H), 2.20-1.79 (m; 7H), 1.68-1.51 (m, 3H), 1.42-1.16 (m, 10H), 0.89-0.85 (m, 6H); 13C NMR (CDCl3) δ 168.4, 155.6, 139.8, 129.8, 117.0, 106.9, 103.8, 68.0, 60.6, 59.1, 58.1, 56.0, 45.3, 39.4, 36.6, 36.4, 32.2, 31.5, 28.4, 28.4, 28.0, 27.3, 22.8, 16.8, 14.2; HPLC-MS (ammonium acetate) [M+H]+=415.3.

Provenance & Evidence