تفاعل #47461

معادلة التفاعل

1-(3-amino-pyrazol-1-yl)-2-methyl-propan-2-ol

(S)-2-[4-(2,3-dichloro-phenoxy)-2-oxo-2,5-dihydro-pyrrol-1-yl]-4-methyl-pentanoic acid [1-((R)-2,3-dihydroxy-propyl)-1H-pyrazol-3-yl]-amide hydrochloride

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

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

1-(3-dimethylaminopropyl)-3-ethylcarbodiimide

1-hydroxybenzotriazole

→

(S)-2-[4-(3-methoxy-phenoxy)-2-oxo-2,5-dihydro-pyrrol-1-yl]-4-methyl-pentanoic acid [1-(2-hydroxy-2-methyl-propyl)-1H-pyrazol-3-yl]-amide

المردود 79.2%

المذيبات

dichloromethane

dichloromethane

ظروف التفاعل

المعالجة

1. 1
   workup.STIRRINGThe reaction mixture was stirred for 18 h at 25° C., under nitrogen
2. 2
   غسيلwashed with 2N hydrochloric acid, saturated sodium bicarbonate solution
3. 3
   تجفيفa saturated sodium chloride solution and dried over magnesium sulfate
4. 4
   أخرىThe crude product obtained
5. 5
   تركيزafter concentration
6. 6
   أخرىwas 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-(3-methoxy-phenoxy)-2-oxo-2,5-dihydro-pyrrol-1-yl]-4-methyl-pentanoic acid (prepared as in Example 160, 300 mg, 0.94 mmol) in dichloromethane (20 mL) was treated with 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide (161 mg, 1.03 mmol) and 1-hydroxybenzotriazole (135 mg, 0.99 mmol). The reaction mixture was stirred at 25° C. for 1 h followed by the addition of 1-(3-amino-pyrazol-1-yl)-2-methyl-propan-2-ol (prepared in U.S. Pat. Appl. US2008021032 Example 80, 175 mg, 1.13 mmol). The reaction mixture was stirred for 18 h at 25° C., under nitrogen. The reaction mixture was 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-(3-methoxy-phenoxy)-2-oxo-2,5-dihydro-pyrrol-1-yl]-4-methyl-pentanoic acid [1-(2-hydroxy-2-methyl-propyl)-1H-pyrazol-3-yl]-amide (340 mg, 79%) as a light brown powder: HR-ES-MS m/z calculated for C24H32N4O5 [M+H]+ 456, observed 457; 1H NMR (300 MHz, DMSO-d6) δ ppm 0.90 (d, J=6.3 Hz, 3H), 0.93 (d, J=6.3 Hz, 3H), 1.04 (br. s., 3H), 1.06 (br. s., 3H), 1.39-1.64 (m, 2H), 1.67-1.82 (m, 1H), 3.77 (s, 3H), 3.89 (s, 2H), 4.16 (d, J=18.4 Hz, 1H), 4.57 (d, J=18.4 Hz, 1H), 4.68 (s, 1H), 4.84-4.93 (m 1H), 4.87 (s, 1H), 6.44 (d, J=2.1 Hz, 1H), 6.83-6.91 (m, 3H), 7.37 (t, J=8.2 Hz, 1H), 7.53 (d, J=2.1 Hz, 1H), 10.79 (s, 1H).

المصدر