The present invention relates to 2'-Alkynyl Substituted Nucleoside Derivatives of Formula (I): and pharmaceutically acceptable salts thereof, wherein B, X, R1, R2, R3 and R4 are as defined herein. The present invention also relates to compositions comprising at least one 2'-Alkynyl Substituted Nucleoside Derivative, and methods of using the 2'-Alkynyl Substituted Nucleoside Derivatives for treating or preventing HCV infection in a patient.
本发明涉及具有以下结构式(I)的2'-炔基取代核苷衍
生物及其药用可接受的盐,其中B、X、R1、R2、R3和R4如本文所定义。本发明还涉及包含至少一种2'-炔基取代核苷衍
生物的组合物,以及使用这些2'-炔基取代核苷衍
生物治疗或预防患者HCV感染的方法。