(S)-tert-butyl 3-((9-((R)-1-(2,5-dichlorophenyl)ethyl)-8-oxo-8,9-dihydro-7H-purin-2-ylamino)methyl)pyrrolidine-1-carboxylate 在
三氟乙酸 作用下,
以
mixture 、 trifluoracetic acid-dichloromethane 为溶剂,
反应 3.0h,
以to give 9-((R)-1-(2,5-Dichlorophenyl)ethyl)-2-((R)-pyrrolidin-3-ylmethylamino)-7H-purin-8(9H)-one [92 mg; 45] as an amber foam in the TFA salt form的产率得到9-((R)-1-(2,5-Dichlorophenyl)ethyl)-2-((R)-pyrrolidin-3-ylmethylamino)-7H-purin-8(9H)-one