Hydrochloric Acid → HCID 67404573, compound

Participants

Reaction Steps

Methyl (4R)-1-{(2S)-2-[(tert-butoxycarbonyl)amino]-2-cyclohexylacetyl}-4-[(3′-vinylbiphenyl-3-yl)methoxy]-L-prolinate 107 was suspended in 4M solution of HCl in dioxane (final conc. 1.3 M) and stirred at RT for 2 h. The solvent was removed under reduced pressure, the residue was taken up with Et2O and evaporated to dryness to afford the title compound 108 (95% crude yield) as a white foam. 1H NMR (400 MHz, DMSO-d6, 300 K) δ 8.15 (bs, 3H), 7.46 (s, 1H), 7.72-7.64 (m, 2H), 7.60 (d, J 7.6, 1H), 7.57-7.46 (m, 3H), 7.40 (d, J 7.6, 1H), 6.87 (dd, J 17.7, 11.1, 1H), 5.98 (d, J 17.7, 1H), 5.37 (d, J 11.1, 1H), 4.65 (s, 2H), 4.46 (t, J 8.5, 1H), 4.36 (bs, 1H), 4.25-4.18 (m, 1H), 4.10 (d, J 11.4, 1H), 3.72-3.65 (m, 1H), 3.68 (s, 3H), 2.60-2.55 (m, partially obscured by residual DMSO-d6, 1H), 2.11-2.00 (m, 1H), 1.89-1.61 (m, 6H), 1.32-1.02 (m, 5H). MS (ES+) m/z 477 (M+H)+

Provenance & Evidence