4-Methylmorpholine → HCID 68606807, compound

Participants

Reaction Steps

To a stirred solution of (2S)-2-amino-2-(4-fluorophenyl)-N-[(2R,3S)-4-oxo-2-phenyl-2,3,4,5-tetrahydro-1,5-benzoxazepin-3-yl]acetamide (65b) (81 mg, 0.199 mmol) in dichloromethane (2 mL) under nitrogen was added cyclohexylacetic acid (35 mg, 0.246 mmol), HOBt (35 mg, 0.259 mmol), NMM (30 mg, 0.297 mmol) and EDAC-HCl (50 mg, 0.261 mmol). The mixture was stirred 5 h at ambient temperature then evaporated. The residue was dissolved in ethyl acetate and extracted in succession with saturated sodium bicarbonate, 1N aqueous HCl, and brine. The organic solution was dried, filtered and evaporated. The residue was purified by flash chromatography on silica gel eluting with 6:1 (v/v) dichloromethane:ethyl acetate to afford the title compound (89 mg, 84%) as a white solid. TLC Rf=0.42 (6:1 dichloromethane:ethyl acetate). 1H NMR (300 MHz, CDCl3) δ0.81-1.37 (m, 5H), 1.59-1.87 (m, 6H), 2.09 (d, 2H, J=6.5 Hz), 5.09 (t, 1H, J=7.0 Hz), 5.26 (d, 1H, J=7.0 Hz), 5.83 (d, 1H, J=7.0 Hz), 6.24 (br d, 1H, J=6.5 Hz), 6.48 (br d, 1H, J=6.5 Hz), 6.88-7.05 (m, 3H), 7.12-7.30 (m, 5H), 7.36 (s, 5H), 7.56 (br s, 1H). MS APCI, m/z=530 (M+1). LC/MS: 2.69 min.

Provenance & Evidence