[Na:1].[NH2:2][C:3]1[N:11]=[C:10]2[C:6]([N:7]=[CH:8][N:9]2[CH2:12][O:13][CH2:14][CH2:15][O:16]C(=O)C2C=CC=CC=2)=[C:5](Cl)[N:4]=1.O.[CH2:27]([OH:34])[C:28]1[CH:33]=[CH:32][CH:31]=[CH:30][CH:29]=1>>[Na:1].[NH2:2][C:3]1[N:11]=[C:10]2[C:6]([N:7]=[CH:8][N:9]2[CH2:12][O:13][CH2:14][CH2:15][OH:16])=[C:5]([O:34][CH2:27][C:28]2[CH:33]=[CH:32][CH:31]=[CH:30][CH:29]=2)[N:4]=1A solution of sodium benzylate in benzyl alcohol was prepared from sodium (2.58 g) and benzyl alcohol (28 ml). The solution was heated to 120° C. and 2-amino-6-chloro-9-(2-benzoyloxyethoxymethyl)purine (3.47 g) was added over a 10 minute period. The reaction mixture was heated overnight with stirring at 120°-130° C. and then poured into a mixture of ice and water. The resulting mixture was extracted thoroughly with chloroform. The aqueous phase was neutralized with acetic acid, giving a white precipitate which was recrystallized from methanol and then from water to give analytically pure 2-amino-6-benzyloxy-9-(2-hydroxyethoxymethyl)purine, m.p. 291°-292° C. (dec.) in 50% yield.
Wird geladen…
