A compound of Formula (I) is provided that has been shown to be useful for treating a disease caused by a viral infection: (I) wherein R1, R2, R3, R4, R5, R6, R7, R8, X1, X2, X3 and X4, are as defined herein.
提供了一种化合物,其
化学式为(I),已被证明对治疗由病毒感染引起的疾病有用:(I)其中R1、R2、R3、R4、R5、R6、R7、R8、X1、X2、X3和X4如本文所定义。