반응 #47329

반응 방정식

1-((R)-2,2-dimethyl-[1,3]dioxolan-4-yl-methyl)-1H-pyrazol-3-ylamine

(S)-4-methyl-2-[2-oxo-4-(3-trifluoromethyl-phenoxy)-2,5-dihydro-pyrrol-1-yl]-pentanoic acid

1-(3-dimethylaminopropyl)-3-ethylcarbodiimide

1-hydroxybenzotriazole

→

(S)-4-methyl-2-[2-oxo-4-(3-trifluoromethyl-phenoxy)-2,5-dihydro-pyrrol-1-yl]-pentanoic acid [1-((R)-2,2-dimethyl-[1,3]dioxolan-4-yl-methyl)-1H-pyrazol-3-yl]-amide

수율 51.0%

용매

dichloromethane

dichloromethane

반응 조건

후처리

1. 1
   workup.STIRRINGThe reaction mixture was stirred at 25° C. for 1.5 d
2. 2
   세척was washed with a saturated aqueous ammonium chloride solution (2×50 mL)
3. 3
   건조a saturated aqueous sodium bicarbonate solution (1×100 mL), water (1×100 mL) and a saturated aqueous sodium chloride solution (1×100 mL), dried over magnesium sulfate
4. 4
   여과filtered
5. 5
   세척rinsed with dichloromethane
6. 6
   농축concentrated in vacuo
7. 7
   기타Purification by Analogix flash chromatography (40 g, 50-100% ethyl acetate/hexanes)

실험 절차

A solution of (S)-4-methyl-2-[2-oxo-4-(3-trifluoromethyl-phenoxy)-2,5-dihydro-pyrrol-1-yl]-pentanoic acid (0.71 g, 1.99 mmol) in dichloromethane (35 mL) was treated with 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide (0.38 mL, 2.17 mmol) and 1-hydroxybenzotriazole (0.28 g, 2.07 mmol). The reaction was stirred at 25° C. for 20 min. At this time, the reaction was treated with 1-((R)-2,2-dimethyl-[1,3]dioxolan-4-yl-methyl)-1H-pyrazol-3-ylamine (prepared as in Example 49, 0.49 g, 2.48 mmol). The reaction mixture was stirred at 25° C. for 1.5 d. At this time, the reaction was diluted with dichloromethane (50 mL) and was washed with a saturated aqueous ammonium chloride solution (2×50 mL), a saturated aqueous sodium bicarbonate solution (1×100 mL), water (1×100 mL) and a saturated aqueous sodium chloride solution (1×100 mL), dried over magnesium sulfate, filtered, rinsed with dichloromethane and concentrated in vacuo. Purification by Analogix flash chromatography (40 g, 50-100% ethyl acetate/hexanes) afforded (S)-4-methyl-2-[2-oxo-4-(3-trifluoromethyl-phenoxy)-2,5-dihydro-pyrrol-1-yl]-pentanoic acid [1-((R)-2,2-dimethyl-[1,3]dioxolan-4-yl-methyl)-1H-pyrazol-3-yl]-amide (0.54 g, 51%) as a light, orange solid: HR-ES-MS m/z calculated for C26H31N4O5F3 [M+H]+ 537.2320, observed 537.2319; 1H NMR (400 MHz, DMSO-d6) δ ppm 0.91 (d, J=6.4 Hz, 3H), 0.95 (d, J=6.4 Hz, 3H), 1.25 (s, 3H), 1.30 (s, 3H), 1.47 (br. s., 1H), 1.54-1.64 (m, 1H), 1.70-1.82 (m, 1H), 3.74 (dd, J=8.4, 5.9 Hz, 1H), 3.94-4.05 (m, 1H), 4.05-4.17 (m, 2H), 4.21 (d, J=18.4 Hz, 1H), 4.35 (quin, J=5.8 Hz, 1H), 4.60 (d, J=18.4 Hz, 1H), 4.84-4.92 (m, 1H), 4.91 (s, 1H), 6.44 (d, J=2.1 Hz, 1H), 7.60 (d, J=2.1 Hz, 1H), 7.65-7.78 (m, 4H), 10.79 (s, 1H).

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