The present invention relates to indole compounds of the formula (I): wherein R
1
, R
2
, R
3
, R
4
, A, E and X are as defined herein, and pharmaceutically acceptable salts thereof, useful in the prevention and treatment of hepatitis C infections.
本发明涉及式(I)的
吲哚化合物:其中R1、R2、R3、R4、A、E和X如本文所定义,以及其药学上可接受的盐,在预防和治疗丙型肝炎感染方面有用。