Methanol → HCID 70169472, compound

Participants

Reaction Conditions

Reaction Steps

A stirred mixture of 1.35 g (5 mmol) o-benzyl-L-tyrosine, 1.0 mL (5 mmol) dicyclohexylamine and 1.01 g (5 mmol) 2-benzoylcyclohexanone (Denny, William A.; Cain, Bruce F.; J. Med. Chem. (1978), 21(5), 430-7.) in 25 mL MeOH was refluxed for 24 h. The solution was then cooled to 20° C., and the solvent was evaporated under reduced pressure. Purification of the residue by flash chromatography using Hexane/EtOAc (1:1) then EtOAc (neat), finally CHCl3/MeOH (10:1) as eluents resulted in 1.4 g of the of the title compound. 1H NMR (DMSO-d6, 400 MHz) δ 12.00 (d, 1H, J=8.4) 7.3 (m, 10H), 7.13 (d, 2H, J=8.5), 6.85 (d, 2H, J=8.5), 5.01 (s, 2H), 4.02 (m, 1H), 3.05 (m, 1H), 2.89 (m, 2H), 2.73 (dd, 1H, J=8.5, 13.7), 2.25 (m, 1H), 2.03 (m, 3H) 1.93 (m, 3H), 1.66 (m, 3H), 1.53 (d, 2H, J=12.3), 1.30 (m, 2H), 1.20 (m, 12H), 1.03 m (2H); low resolution MS (ESP+) m/e 456 (MH+).

Provenance & Evidence