4-Methylmorpholine → N2-[(3,5-difluorophenyl)acetyl]-N1-[(3S,7S)-1-methyl-2-oxo-7-phenyl-2,3,4,7-tetrahydro-1H-azepin-3-yl]-L-alaninamide

Participants

Reaction Conditions

Reaction Steps

To a solution of (3S,7S)-3-amino-1-methyl-7-phenyl-1,3,4,7-tetrahydro-2H-azepin-2-one (1f) (120 mg) in DCM (6 mL) at 0° C. under N2 was added N-[(3,5-difluorophenyl)acetyl]-L-alanine (135 mg), HOBt-hydrate (186 mg), EDAC.HCl (160 mg) and N-methyl morpholine (92 mg). The reaction mixture was stirred 1 h at 0° C. and 2.5 h at room temperature, then diluted with 30% Hexanes/EtOAc (100 mL). The organic phase was consecutively washed with H2O, 0.2 N HCl, saturated NaHCO3, and brine, dried (Na2SO4), filtered and evaporated. The crude product was purified by flash chromatography (1% MeOH/DCM) to afford the title compound as an off-white solid (45 mg, 19%). 1H NMR (300 MHz, CDCl3) δ 1.41 (d, 3H), 2.18-2.29 (m, 1H), 2.54 (s, 3H), 2.79-2.87 (m, 1H), 3.55 (s, 2H), 4.47-4.57 (m, 1H), 5.45-5.54 (m, 1H), 5.86 (m, 2H), 6.14-6.19 (m, 1H), 6.29 (bd, 1H), 6.69-6.76 (m, 1H), 6.84 (bd, 2H), 7.22-7.45 (m, 5H). MS APCI, m/z=464 (M+Na). LC/MS 2.52 min., Method A.

Provenance & Evidence