The present application relates to 4-amino-imidazoquinoline compounds and pharmaceutically acceptable salts thereof. These compounds are RTT agonists and, therefore, may be useful as medicaments for the treatment of diseases such as cancer or infectious diseases. Claim 1: Compound of formula (1) wherein: R¹ is C₁₋₇ alkyl or C₁₋₇ alkoxy-C₁₋₇ alkyl；R² is selected from the group consisting of hydrogen, halogen, C₁₋₇ hydroxyalkyl,C₁₋₇ alkoxy-alkyl,carboxyl, carboxy-C₁₋₇ alkyl,Cbox carboxy-alkenyl,aminocarbonyl-C₁₋₇ alkyl,C₂₋₇ aminocarbonyl-alkenyl,C₁₋₇-carbonyl-C₁₋₇ alkyl alkylamino,1. Lease c83218c83331-83278carbon-alquenilo c832283331-8327；C₁₋₇ alkoxycarbonyl-C₁₋₇ alkyl,C₁₋₇-Cque alkenyl alkoxycarbonyl,C₁₋₇-sulfonyl-C₁₋₇ alkyl,1. Sulfuric acid-c833218d83277a；C₁₋₇-sulfamoyl-C₁₋₇ alkyl,phenyl, said phenyl being unsubstituted or substituted with one, two or three groups selected from the group consisting of C₁₋₇ alkyl,C₁₋₇ cycloalkyl,Halogen, halogen tar c8332127a,a. Halogens alcoxi c8321c83318327；1. Hidroxi, hydroxi hydrocarbon c8332127a；C₁₋₇ alkoxy,ciano carboxilo alcoxicarbonilo CC₁₋₇ alkoxycarbonyl-C₁₋₇ alkyl,C₁₋₇ alkylsulfonyl,C₁₋₇ hydroxy-alkylsulfonyl,C₁₋₇-C alkylsulfonyl alkoxy,Cbox-carboxy-alkyl sulfonylC₁₋₇ alkoxycarbonyl-C₁₋₇ alkylsulfonyl,amino, C₁₋₇ alkylamino,di-Cila alkylamino and nitro, and phenoxy, said phenoxy being unsubstituted or substituted with one, two or three groups selected from the group consisting of C₁₋₇ alkyl,C₁₋₇ cycloalkyl,Halogen, halogen tar c8332127a,a. Halogens alcoxi c8321c83318327；1. Hidroxi, hydroxi hydrocarbon c8332127a；C₁₋₇ alkoxy,ciano carboxilo alcoxicarbonilo CC₁₋₇ alkoxycarbonyl-C₁₋₇ alkyl,C₁₋₇ alkylsulfonyl,C₁₋₇ hydroxy-alkylsulfonyl,C₁₋₇-C alkylsulfonyl alkoxy,Cbox-carboxy-alkyl sulfonylC₁₋₇ alkoxycarbonyl-C₁₋₇ alkylsulfonyl,amino, C₁₋₇ alkylamino,Di lease c8327a and nitrogen； R3 is hydrogen or halogen； r83088 is selected from the following groups: O - (ch83222244) - nhr8309；y -O- (CO) - (CH) -NHRwherein: m is selected from
