反应详情

温度

0 °C

To a solution of 3-[1-[2-amino-3-(4-fluorophenyl)proponyl]-4-(2-naphthalen-2-ylethyl)-5-oxo-piperazin-2-yl]propionitrile, 33, (47.2 g, 100 mmol), N-acetyl-L-tyrosine (22.3 g, 120 mmol), 1-hydroxybenzotriazole (16.2 g, 120 mmol), and N-methylmorpholine (132 mL, 120 mmol) in DMF (150 mL) is cooled to 0° C. and 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide (24.9 g, 130 mmol) is slowly added. The resulting mixture is stirred for 2 hours at 0° C. then allowed to warm and stir at room temperature another 2 hours. The reaction solution is diluted with water and the resulting solid is collected by filtration, re-dissolved in EtOAc and extracted with water, dried and concentrated in vacuo to afford the crude product which is purified over silica gel.

1. temperatureto warm
2. stirringstir at room temperature another 2 hours
3. filtrationthe resulting solid is collected by filtration
4. dissolutionre-dissolved in EtOAc
5. extractionextracted with water
6. customdried
7. concentrationconcentrated in vacuo