反应详情

(2S,4S)-1-[[N-(4-Carboxybicyclo[2.2.2]oct-1-yl)amino]acetyl]-4-fluoropyrrolidine-2-carbonitrile (50.0 mg), 1-hydroxybenzotriazole (23.7 mg), JANDAJEL-1-(3-dimethylaminopropyl)-3-ethylcarbodiimide (289 mg) and N,N-dimethylformamide (1 mL) were mixed together and the mixture was stirred at room temperature for 3 hours. Subsequently, (2R)-2-aminoheptane (46.6 μL) was added and the mixture was stirred at room temperature for 17 hours and 40 minutes. This was followed by addition of dichloromethane (0.5 mL) and (2R)-2-aminoheptane (11.6 μL), stirring at room temperature for 4.5 hours, addition of JANDAJEL-1-(3-dimethylaminopropyl)-3-ethylcarbodiimide (96.6 mg) and additional stirring at room temperature for 17 hours. Subsequently, (isocyanatomethyl)polystyrene (232 mg) was added and the mixture was stirred at room temperature for 2 hours. The insoluble material was filtered and the filtrate was concentrated under reduced pressure. The resulting residue was then purified by silica gel column (eluant:ethyl acetate:methanol=10:1) to give (2S,4S)-4-fluoro-1-[[N-[4-[(2R)—N-(2-heptyl)amino]carbonylbicyclo[2.2.2]oct-1-yl]amino]acetyl]pyrrolidine-2-carbonitrile (9.0 mg).

1. stirringthe mixture was stirred at room temperature for 17 hours and 40 minutes
2. stirringstirring at room temperature for 4.5 hours
3. stirringadditional stirring at room temperature for 17 hours
4. stirringthe mixture was stirred at room temperature for 2 hours
5. filtrationThe insoluble material was filtered
6. concentrationthe filtrate was concentrated under reduced pressure
7. customThe resulting residue was then purified by silica gel column (eluant:ethyl acetate:methanol=10:1)