Compounds of formula I:
wherein R1 to R5 are defined herein, for use in modulating an immune response in a subject, wherein said use comprises administering said compound to said subject, are disclosed.
式 I 的化合物:
其中 R1 至 R5 在本文中定义,用于调节受试者的免疫反应,其中所述用途包括向所述受试者施用所述化合物。