Acetic Acid → HCID 178441506, compound

Participants

Reaction Steps

To a solution of 0.073 g (0.099 mmol) of the product from Example 42 in 2 mL of MeOH was added 4 drops of conc. HCl. The reaction mixture was stirred for 5 minutes and then made basic by addition of conc. NH4OH. The pH of the solution was adjusted to 5.0 by addition of acetic acid. The reaction mixture was concentrated in vacuo and the residue was taken up in 20 ml of EtOAc. The solution was washed with water (2×5 mL) and brine (1×5 mL) and dried over MgSO4. The mixture was filtered and concentrated in vacuo. The crude product was very insoluble and was consequently purified by trituration with CHCl3, EtOAc and hexanes to give 32 mg of an off white solid, 65% yield. 1H-NMR (CD3OD 300 MHz): 0.83 (t, 3H, J=7.3 Hz), 1.32 (m, 2H), 1.62 (2H, m), 2.09 (s, 2H), 2.68 (3 line m, 2H, J=8.1 Hz), 5.37 (bs, 2H), 7.00-7.10 (m, 4H), 7.42-7.61 (m, 5H), 7.89 (dd, 1H, J=2.4, 8.8 Hz), 8.39 (d, J=2.5 Hz). FABMS m/e: 494(M+ +1) calc. for C28H27N7O2.

Provenance & Evidence