Patent ID: 8748436

Claim:
A compound of formula I, in any of its stereoisomeric forms, or a mixture of stereoisomeric forms in any ratio, or a physiologically acceptable salt thereof, or a physiologically acceptable solvate of any of them, wherein A is O; X is (C 1 -C 6 )-alkylene-oxy wherein the oxygen atom of the (C 1 -C 6 ) alkylene-oxy group is bonded to the group R 2 ; R 1 is (C 1 -C 4 )-alkyl; R 2 is phenylene substituted with (R 5 )m, wherein R 5 is (C 1 -C 4 )-alkyl and m is selected from the group consisting of 1 and 2; R 3 is selected from the group consisting of (C 1 -C 6 )-alkyl, (C 3 -C 7 )-cycloalkyl-C u H 2u —, (C 3 -C 7 )-heterocycle, (C 5 -C 9 )-aryl, and (C 5 -C 9 )-heteroaryl, wherein the (C 1 -C 6 )-alkyl, (C 3 -C 7 )-cycloalkyl-C u H 2u —, C 3 -C 7 )-heterocycle, (C 5 -C 9 )-aryl, and (C 5 -C 9 )-heteroaryl may each independently be substituted with one, two, or three substituents selected from the group consisting of halo, (C 1 -C 4 )-alkyl, trifluoromethyl, and trifluoromethylsulfonyl, and further wherein u is selected from the group consisting of 1 and 2; and R 4 is selected from the group consisting of hydrogen and (C 1 -C 4 )-alkyl.