反应详情

Into a 50-mL round-bottom flask, which was purged and maintained with an inert atmosphere of nitrogen, was placed a solution of 3-(4-chloro-2-(methoxymethyl)-1H-imidazol-5-yl)-4-methylbenzoic acid (compound 27.5, 20 mg, 0.07 mmol) in N,N-dimethylformamide (3 mL). 4-Dimethylaminopyridine (17.4 mg, 0.14 mmol), EDC.HCl (27 mg, 0.14 mmol), 4-(piperidin-4-yl)benzonitrile hydrochloride (compound 1.2, 15.5 mg, 0.07 mmol, 1.00 equiv) were added and the resulting solution was stirred for 12 h at room temperature. The reaction was quenched with water (10 mL) and extracted with ethyl acetate (3×10 mL). The combined organic layers were washed with brine (10 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 (35% CH3CN up to 50% in 7 min, up to 100% in 3 min, down to 35% in 1 min); Detector, Waters 2489, 254 & 220 nm. The fractions containing pure compound were combined and lyophilized to yield 15 mg (47%) of the title compound as a white solid. m/z (ES+) 449 (M+H)+.

1. customInto a 50-mL round-bottom flask, which was purged
2. temperaturemaintained with an inert atmosphere of nitrogen
3. customThe reaction was quenched with water (10 mL)
4. extractionextracted with ethyl acetate (3×10 mL)
5. washThe combined organic layers were washed with brine (10 mL)
6. dry with materialdried (Na2SO4)
7. filtrationfiltered
8. concentrationconcentrated under reduced pressure
9. customThe residue was purified by Prep-HPLC with the following conditions (1#-Pre-HPLC-001(SHIMADZU))
10. waitmobile phase, water with 0.05% TFA and CH3CN (35% CH3CN up to 50% in 7 min
11. waitup to 100% in 3 min
12. waitdown to 35% in 1 min)
13. additionThe fractions containing pure compound