Substituted imidazoquinolines

A compound of formula I:

• wherein
• R1 is selected from the group consisting of:
• —H, alkyl, alkynyl, aryl, alkoxy, heterocyclyl and heteroaryl,
• wherein alkyl, alkynyl, aryl, alkoxy, heterocyclyl or heteroaryl may be unsubstituted or substituted by one or more substituents;
• A is C1-C6 alkyl;
• B is —N(R2)(R3);
• R2 is H or —(CO)—R5,
• R5 is selected from the group consisting of:
• alkyl, alkynyl, aryl, heterocyclyl and heteroaryl,
• each of which may be unsubstituted or substituted by one or more substituents;
• R3 is selected from the group consisting of:
• —H, alkyl, alkenyl, aryl, heteroaryl, cycloalkyl, and heterocyclyl,
• wherein alkyl, alkenyl, aryl, heteroaryls, cycloalkyl or heterocyclyl may be unsubstituted or substituted by one or more substituents;
• or a pharmaceutically acceptable solvate, salt, N-oxide or stereoisomer thereof.