2′ and 3′-Prodrugs of 1′, 2′, 3′ or 4′-branched β-D or β-L nucleosides, or their pharmaceutically acceptable salts and derivatives are described, which are useful in the prevention and treatment of Flaviviridae infections and other related conditions. These modified nucleosides provide superior results against flaviviruses and pestiviruses, including hepatitis C virus and viruses generally that replicate through an RNA dependent RNA reverse transcriptase. Compounds, compositions, methods and uses are provided for the treatment of Flaviviridae infection, including HCV infection, that include the administration of an effective amount of the prodrugs of the present invention, or their pharmaceutically acceptable salts or derivatives. These drugs may optionally be administered in combination or alteration with further anti-viral agents to prevent or treat Flaviviridae infections and other related conditions.
本文描述了1′、2′、3′或4′-支链β-D或β-L核苷的2′和3′-前药,或其药学上可接受的盐和衍
生物,这些前药在预防和治疗黄病毒科感染和其他相关疾病方面非常有用。这些修饰后的核苷对黄病毒和猪瘟病毒,包括丙型肝炎病毒和通常通过RNA依赖性RNA逆转录酶复制的病毒,提供了优越的抗病毒效果。本发明提供用于治疗黄病毒科感染,包括HCV感染的化合物、组合物、方法和用途,包括给予本发明的前药或其药学上可接受的盐或衍
生物的有效量。这些药物可以选择性地与其他抗病毒剂组合或交替使用,以预防或治疗黄病毒科感染和其他相关疾病。