反应详情

Into a round-bottom flask, was placed a solution of 3-(4-cyclopropyl-2-(methoxymethyl)-1H-imidazol-5-yl)-4-methylbenzoic acid (compound 4.10, 30 mg, 0.10 mmol) in dichloromethane (5 mL). HBTU (76 mg, 0.20 mmol), 4-(piperidin-4-yl)benzonitrile hydrochloride (compound 1.2, 35 mg, 0.15 mmol, 1.50 equiv) and triethylamine (28 μL, 0.20 mmol) were added and the mixture was stirred overnight at room temperature. The mixture was diluted with DCM (30 mL) and washed with water (3×15 mL), dried (Na2SO4), filtered, and concentrated under reduced pressure. The residue was purified by Prep-HPLC with the following conditions (1#-Pre-HPLC-001(SHIMADZU)): Column, SunFire Prep C18 OBD Column, 5 um, 19*150 mm; mobile phase, water with 0.05% TFA and CH3CN (25.0% CH3CN up to 38.0% in 7 min, up to 100.0% in 3 min, down to 25.0% in 1 min); Detector, Waters 2489, 254 & 220 nm. The fractions containing pure compound were combined and lyophilized to yield the title compound as a white solid (5.9 mg, 12%). m/z (ES+) 455 (M+H)+. 1H NMR (400 MHz, CDCl3): δ 7.69 (d, J=8.0 Hz, 2H), 7.59-7.53 (m, 2H), 7.53-7.47 (m, 3H), ˜4.9-4.75 (m, 1H partially obscured by water peak), 4.72 (s, 2H), 3.99-3.85 (m, 1H), 3.52 (s, 3H), ˜3.3 (m, 1H overlapped with methanol solvent peak), 3.08-2.93 (m, 2H), 2.37 (s, 3H), 2.08-1.93 (m, 1H), 1.93-1.65 (m, 4H), 1.02-0.94 (m, 2H), 0.74-0.68 (m, 2H).

1. customInto a round-bottom flask, was placed
2. washwashed with water (3×15 mL)
3. dry with materialdried (Na2SO4)
4. filtrationfiltered
5. concentrationconcentrated under reduced pressure
6. customThe residue was purified by Prep-HPLC with the following conditions (1#-Pre-HPLC-001(SHIMADZU))
7. waitmobile phase, water with 0.05% TFA and CH3CN (25.0% CH3CN up to 38.0% in 7 min
8. waitup to 100.0% in 3 min
9. waitdown to 25.0% in 1 min)
10. additionThe fractions containing pure compound