| 摘要 |
Intermediate compounds, for preparing pharmaceutically active purine derivatives, of general formula: wherein R7 is C1-18 alkyl, C5-7 cycloalkyl, C5-7 cycloalkyl attached to a C1-4 alkyl chain, an aromatic ring, an aromatic ring substituted by F, Cl, Br, -OH, -CF3, C1-4 alkyl or C1-4 alkoxy, an aromatic ring attached to a C1-4 alkyl chain, or an aromatic ring attached to a C1-4 alkyl chain and substituted by F, Cl, Br, -OH, -CF3, C1-4 alkyl or C1-4 alkoxy, and Y is Cl or acetyloxy; and processes for their preparation are disclosed. |
