The application discloses a kind of compounds or its pharmaceutically acceptable salt,
crystal form, solvate shown in formula I;Wherein, R1, R2, R3, R4 It is independently selected from
halogen, C1~C4
Alkyl or
halogen-substituted C1~C4
Alkyl.This kind of compound, it is connected by amido group with para-substituted phenyl and 3,5 position substituted benzyl to
thiophene, novel and unique structure, to EV71, EVD68 Such as multiple
enterovirus has good inhibitory activity and smaller
cytotoxicity, provides a new potential choice for
enterovirus infection with
pharmacy drug.In addition, the application also discloses the preparation method and application of the compound shown in formula I, and its pharmaceutical composition.