Reacción #47374

Ecuación de reacción

3-(2-methoxy-ethyl)-[1,2,4]thiadiazol-5-ylamine

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

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

1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride

1-hydroxybenzotriazole

→

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

Rendimiento 28.1%

Disolventes

dichloromethane

Condiciones de reacción

Tratamiento posterior

1. 1
   workup.ADDITIONwas added
2. 2
   LavadoThe mixture was washed with saturated ammonium chloride (1 mL)
3. 3
   Otroevaporated
4. 4
   Otrothe crude product purified by HPLC (Gilson semi-prep; Supelcosil ABZ+Plus 12 μM 25 cm×21.2 mm column 20-95% acetonitrile/water) which

Procedimiento

To 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, 84 mg, 0.26 mmol) in dichloromethane (1.00 mL) was added 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride (71 mg, 0.37 mmol) and 1-hydroxybenzotriazole (45 mg, 0.33 mmol). The resulting solution was stirred for 5 min before 3-(2-methoxy-ethyl)-[1,2,4]thiadiazol-5-ylamine (50 mg, 0.31 mmol) was added and the resulting mixture stirred at 25° C. overnight. The mixture was washed with saturated ammonium chloride (1 mL), evaporated and the crude product purified by HPLC (Gilson semi-prep; Supelcosil ABZ+Plus 12 μM 25 cm×21.2 mm column 20-95% acetonitrile/water) which afforded (S)-2-[4-(2-chloro-phenoxy)-2-oxo-2,5-dihydro-pyrrol-1-yl]-4-methyl-pentanoic acid [3-(2-methoxy-ethyl)-[1,2,4]thiadiazol-5-yl]-amide (34 mg, 28%) as a light orange solid: HR-ES-MS m/z calculated for C21H25ClN4O4S [M+H]+ 465.1359, observed 465.1358; 1H NMR (300 MHz, DMSO-d6) ppm 0.91 (d, J=6.6 Hz, 3H), 0.94 (d, J=6.6 Hz, 3H), 1.47 (br. s., 1H), 1.58-1.74 (m, 1H), 1.80-1.95 (m, 1H), 3.01 (t, J=6.4 Hz, 2H), 3.22 (s, 3H), 3.74 (t, J=6.4 Hz, 2H), 4.19-4.36 (m, 1H), 4.41-4.61 (m, 1H), 4.83 (s, 1H), 4.94-5.07 (m, 1H), 7.37 (t, J=7.8 Hz, 1H), 7.47 (t, J=7.8 Hz, 1H), 7.54 (d, J=7.8 Hz, 1H), 7.66 (d, J=7.8 Hz, 1H), 13.32 (s, 1H).

Fuente