Patent ID: 8163774

Claim:
The compound of formula I wherein R20 is H; R21 is selected from the group consisting of (C 3 -C 10 )-cycloalkyl, (C 1 -C 6 )-alkylene-(C 6 -C 10 )-aryl, phenyl and (C 1 -C 6 )-alkylene-(C 6 -C 10 )-pyridyl, where the cycloalkyl, aryl and pyridyl radicals are optionally mono- or polysubstituted by F, Cl, Br, I, CN, NO 2 , SH, OH, CF 3 , (C 1 -C 6 )-alkyl, O—(C 1 -C 6 )-alkyl and S—(C 1 -C 6 )-alkyl; excluding those definitions of R21 wherein it is an unsubstituted phenyl or unsubstituted benzyl; R3 is selected from the group consisting of (C 2 -C 10 )-alkenyl and (C 1 -C 6 )-alkylene-(C 6 -C 10 )-aryl, where the alkenyl and (C 1 -C 6 )-alkylene-(C 6 -C 10 )-aryl substituents are optionally mono- or poly-substituted by F, Cl, Br; R4 and R5 are each H; R11 is selected from the group consisting of H, F, Cl, Br, I, (C 1 -C 6 )-alkyl, (C 3 -C 8 )-cycloalkyl, NH 2 , NH(C 1 -C 6 )-alkyl, NH(C 3 -C 7 )-cycloalkyl, N((C 1 -C 6 )-alkyl) 2 and O—(C 1 -C 6 )-alkyl, where the alkyl groups are optionally mono- or poly-substituted by F, Cl, Br or I; and n is 0; or a pharmaceutically acceptable salt thereof.