Cl[C:2]1[N:10]=[CH:9][N:8]=[C:7]2[C:3]=1[N:4]=[CH:5][N:6]2[CH:11]=[CH2:12].[NH3:13].CO>O>[CH:11]([N:6]1[CH:5]=[N:4][C:3]2[C:7]1=[N:8][CH:9]=[N:10][C:2]=2[NH2:13])=[CH2:12]6-Chloro-9-vinylpurine (0.48 g, 3 mmol) was added to saturated ammonia/methanol (20 mL) and the mixture was heated at 50° C. for 15 h. Water was added and the aqueous layer was extracted with ethyl acetate. The combined organic layers were dried over sodium sulfate, concentrated on a rotavap then subjected to silica gel column chromatography (5% methanol/methylene chloride) yielding the desired product.
불러오는 중…