The invention provides novel nucleosides and related processes, pharmaceutical compositions, and methods. The novel nucleosides are useful in a wide variety of antiviral, antineoplastic, and antibacterial applications. Preferred embodiments of the instant invention include novel 2 halogen-substituted, 3 halogen-substituted, and 2′,3′dihalogen-substituted analogues of 3-deazaadenosine, and novel 3 halogen-substituted analogues of 3-deazaguanosine. Compounds of the instant invention, including 4-Amino-6-fluoro-1-(&bgr;-D-ribofuranosyl)imidazo[4,5-c]pyridine and 6-Amino-7-bromo-1,5-dihydro-1-&bgr;-
D
-ribofuranosylimidazo[4,5-c]pyridin-4-one, have exhibited potent antiviral and anticancer activity in vitro. The compounds are also useful in the concomitant treatment of bacterial infections associated with viral infections such as AIDS.
该发明提供了新颖的核苷和相关的工艺、药物组合和方法。这些新颖的核苷在抗病毒、抗肿瘤和抗菌应用中非常有用。该发明的首选实施例包括新型的2卤代、3卤代和2′,3′二卤代的3-去
氨腺苷类似物,以及新型的3卤代的3-去
氨鸟苷类似物。该发明的化合物,包括4-
氨基-6-
氟-1-(&bgr;-
D-核糖呋喃基)
咪唑[4,5-c]
吡啶和6-
氨基-7-
溴-1,5-二
氢-1-&bgr;-
D-核糖基
咪唑[4,5-c]
吡啶-4-
酮,在体外表现出强效的抗病毒和抗癌活性。这些化合物也在同时治疗与艾滋病等病毒感染相关的细菌感染方面非常有用。