Patent ID: 7071219

Claim:
A compound of formula A wherein Ar is pyridine-2,5-diyl, pyridine-5,2-diyl, pyridine-2,6-diyl, or pyridine-2,4-diyl, R 1 , R 2 are each independently selected from hydrogen, substituted or unsubstituted C 1-12 -alkyl, substituted or unsubstituted C 2-12 -alkenyl, substituted or unsubstituted C 2-12 -alkynyl, and substituted or unsubstituted C 3-12 -cycloalkyl, wherein the substituent is selected from hydroxy, halogen, C 3-12 -cycloalkyl, alkoxy, alkylsulfanyl, acyloxy, alkoxycarbonyl, acyl, C 1-6 -alkyl-NH—C(O)—, C 1-6 -alkyl-C(O)NH— and —NR 3 R 4 , or alternatively R 1 is hydrogen, and R 2 is hydroxy, alkoxy, C 2 –C 12 -alkenyloxy, phenoxy, or phenoxy substituted with methyl, methoxy, halogen, nitro, cyano, trifluoromethyl, ethenyl or —C(O)—O—CH 3 ; and R 3 and R 4 are each independently selected from hydrogen or C 1-6 -alkyl, or alternatively R 3 and R 4 together with the nitrogen-atom to which they are attached form a ring, which ring is monosubstituted by oxo and which ring optionally contains a further heteroatom, or a pharmaceutically acceptable salt thereof.