Patent ID: 6949654

Claim:
A chemical compound with the following formula (I), and pharmaceutically acceptable salts thereof: wherein R 1 denotes branched alkyl, aralkyl, aryl or substituted aryl; wherein R 2 denotes hydrogen, or COR 6 , wherein R 6 is alkyl or aryl); and wherein R 3 denotes CO 2 H, CONH 2 , or CONR 4 R 5 , wherein R 4 denotes hydrogen, alkyl or aryl, wherein R 5 denotes an unsaturated or saturated heterocyclic radical having 1 to 4 heteroatoms selected from the group consisting of nitrogen, oxygen and sulfur, wherein the heterocyclic radical is selected from the group consisting of furanyl, oxazolyl, isooxazolyl, thiophenyl, thiazolyl, isothiazolyl, pyrrolyl, imidazolyl, pyrazolyl, oxadiazolyl, thiadiazoyl, pyridyl, pyrimidinyl, pyrazinyl, pyridazinyl, triazinyl, triazolyl, and tetrazolyl, and wherein the heterocyclic radical is substituted or unsubstituted with one or two, identical or different substituent groups selected from the group consisting of halogen, C 1-2 -alkyl, C 1-4 -alkoxy, C 1-4 -alkylthio, hydroxy, mercapto, trifluoromethyl, nitro, phenyl, nitrile, carboxy or C 1-4 -alkoxycarbonyl.