To produce a 4-chloro-7-(2,3,6-tri-O-benzyl-β-D-arboninofuranosyl]-7H-pyrrolo(2,3-d]pyrimidine compound having the general formula:-
wherein Z is a hydrogen atom or a methylmercapto group and Bz represents a benzyl radical, 4-chloro-7H-pyrrolo[2,3-d]pyrimidine or the corresponding 2-methylmercapto compound is treated with sodium hydride in a polar solvent to form an anion having the formula:
and the anion is β-D-arabinofuranosylated with 2,3,5-tri-O-benzyl-a-D-arabinofuranosyl chloride. The compounds produced are useful as intermediates in the preparation of antiviral agents.
制备通式为:- 的 4-
氯-7-(2,3,6-三-O-苄基-β-D-
呋喃甲酰)-7H-
吡咯并[2,3-d]
嘧啶化合物。
将 4-
氯-7H-
吡咯并[2,3-d]
嘧啶或相应的 2-甲基巯基化合物在极性溶剂中用氢化
钠处理,形成具有通式的阴离子:
该阴离子与 2,3,5-三-O-苄基-a-D-阿拉伯
呋喃糖基
氯化物进行β-D-阿拉伯
呋喃糖基化。生成的化合物可用作制备抗病毒剂的中间体。