反应详情

To a refluxing solution of methyl 3-((4-oxo-8-(3-(2-oxo-2,3-dihydro-1H-benzo[d]imidazol-1-yl)propyl)-1-phenyl-1,3,8-triazaspiro[4.5]decan-3-yl)methyl)benzoate (0.33 g, 0.59 mmol) and (R)-3-quinuclidinol (0.3 g, 2.4 mmol) in toluene (5 mL), was added titanium(IV)-i-propoxide (0.173 mL, 0.59 mmol, d=0.97). After refluxing for 18 h, the reaction mixture was concentrated in vacuo and isolated by reverse phase HPLC to obtain the title compound (0.13 g, 34%); 1H NMR (DMSO-d6): δ 1.31-1.34 (m, 1H), 1.51-1.55 (m, 4H), 1.78-1.88 (m, 3H), 1.98-2.01 (m, 1H), 2.33 (t, 2H, J=7.2 Hz), 2.52-2.72 (m, 11H), 3.15-3.21 (m, 1H), 3.85 (t, 2H, J=6.8 Hz), 4.59-4.62 (m, 4H), 4.90-4.92 (m, 1H), 6.76 (t, 1H, J=7.2 Hz), 6.84 (d, 2H, J=8.4 Hz), 6.96 (d, 3H, J=2.4 Hz), 7.17-7.24 (m, 3H), 7.52-7.59 (m, 2H), 7.87-7.92 (m, 2H), 10.80 (br, 1H); MS for C38H44N6O4 m/z 649.11 (M+H)+.

1. temperatureAfter refluxing for 18 h
2. concentrationthe reaction mixture was concentrated in vacuo
3. customisolated by reverse phase HPLC