The present invention refers to new sulfonamide derivatives, of general formula (1a, 1b, 1c), optionally in form of one of their stereoisomers, preferably enantiomers or diastereomers, their racemate, or in form of a mixture of at least two of their stereoisomers, preferably enantiomers or diastereomers, in any mixing ratio, or their salt thereof s, preferably the corresponding, physiologically acceptable salt thereofs, or corresponding solvate thereofs; to the processes for their preparation, to their application as medicaments in human and/or veterinary therapeutics, and to the pharmaceutical compositions containing them.