Substituted 6-fluoro-1H-pyrazolo[4,3-b]pyridines and use thereof

A compound of formula (I)

• in which
• R1 represents hydrogen or (C1-C4)-alkyl,
• where (C1-C4)-alkyl may be substituted by one or two substituents independently of one another selected from the group consisting of fluorine and trifluoromethyl,
• R2 represents (C1-C4)-alkyl, (C3-C7)-cycloalkyl or a 4- to 7-membered heterocycle,
• where (C1-C4)-alkyl may be substituted by one or two substituents independently selected from the group consisting of fluorine, trifluoromethyl and (C3-C7)-cycloalkyl,
• R3 is (C1-C6)-alkyl or benzyl,
• where (C1-C6)-alkyl is substituted by one trifluoromethyl substituent,
• where (C1-C6)-alkyl may be substituted by 1 to 3 fluorine substituents, and
• where benzyl is substituted by 1 to 3 fluorine substituents,
• or a salt thereof.