تفاعل #47467
ord-3fa5f80462d34092bd76684d0f3a979e
معادلة التفاعل
المتفاعلات
الكواشف
المذيبات
ظروف التفاعل
المعالجة
- 1غسيلwashed with 2N hydrochloric acid, saturated sodium bicarbonate solution
- 2تجفيفa saturated sodium chloride solution and dried over magnesium sulfate
- 3أخرىThe crude product obtained
- 4تركيزafter concentration
- 5أخرىwas purified by ISCO flash chromatography (Teledyne Isco RediSep Flash Column 40 g; 0% to 10% methanol/dichloromethane)
الإجراء التجريبي
A solution of (S)-2-[4-(2-chloro-phenoxy)-2-oxo-2,5-dihydro-pyrrol-1-yl]-4-methyl-pentanoic acid (prepared as in Example 64, 425 mg, 1.30 mmol) in dichloromethane (20 mL) was treated with 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride salt (275 mg, 1.45 mmol), 1-hydroxybenzotriazole (195 mg, 1.45 mmol) and (S)-5-(3-amino-pyrazol-1-ylmethyl)-oxazolidin-2-one (285 mg, 1.57 mmol). The reaction mixture was stirred for 18 h at 25° C., under nitrogen and then diluted with dichloromethane, washed with 2N hydrochloric acid, saturated sodium bicarbonate solution, a saturated sodium chloride solution and dried over magnesium sulfate. The crude product obtained after concentration, was purified by ISCO flash chromatography (Teledyne Isco RediSep Flash Column 40 g; 0% to 10% methanol/dichloromethane) to afford (S)-2-[4-(2-chloro-phenoxy)-2-oxo-2,5-dihydro-pyrrol-1-yl]-4-methyl-pentanoic acid [1-((S)-2-oxo-oxazolidin-5-ylmethyl)-1H-pyrazol-3-yl]-amide (370 mg, 58%) as a white powder: LR-ES-MS m/z calculated for C23H26ClN5O5 [M]+ 487, observed 488 [M+H]+; 1H NMR (300 MHz, DMSO-d6) δ ppm 0.90 (d, J=6.4 Hz, 3H), 0.94 (d, J=6.4 Hz, 3H), 1.35-1.50 (m, 1H), 1.50-1.66 (m, 1H), 1.68-1.87 (m, 1H), 3.28 (dd, J=8.8, 6.0 Hz, 1 H), 3.55 (t, J=8.9 Hz, 1H), 4.21 (d, J=18.4 Hz, 1H), 4.27 (d, J=5.1 Hz, 2H), 4.61 (d, J=18.4 Hz, 1H), 4.79 (s, 1H), 4.80-4.95 (m, 2H), 6.47 (d, J=2.1 Hz, 1H), 7.37 (td, J=7.8, 1.2 Hz, 1H), 7.42-7.50 (m, 1H), 7.50-7.57 (m, 2H), 7.61 (d, J=2.1 Hz, 1H), 7.65 (d, J=7.8 Hz, 1H), 10.85 (s, 1H).