Patent ID: 7879864

Claim:
A compound of the formula I wherein: R1, R2 and, R3 are independently selected from the group consisting of (C 1 -C 6 )-alkyl, (C 3 -C 10 )-cycloalkyl, (C 2 -C 10 )-alkenyl, (C 2 -C 10 )-alkynyl, (C 6 -C 10 )-aryl, and (C 6 -C 10 )-heterocycle, wherein the alkyl, cycloalkyl, alkenyl, alkynyl, aryl and heterocycle substituents may be replaced one or more times by F, Cl, Br, CN, NO 2 , SF 5 , OH, (C 1 -C 6 )-alkyl, —CF 3 , —OCF 3 , —SCF 3 , (C 2 -C 6 )-alkenyl, (C 2 -C 6 )-alkynyl, OR7, NR7R8, NR7CONR7R8, COR7, COOR7, CONR7R8, (C 1 -C 6 )-alkylene-OR7, (C 1 -C 6 )-alkylene-NR7R8, (C 1 -C 6 )-alkylene-NR7SO 2 R7, (C 1 -C 6 )-alkylene-SR7, alkylene-S(O)R7, alkylene -CONR7R8, SR7, SOR7, SO 2 R7, SO 2 NR7R8, NR7SO 2 R7, (C 1 -C 6 )-alkylene-(C 3 -C 10 )-cycloalkyl, (C 1 -C 6 )-alkylene-(C 6 -C 10 )-aryl, (C 1 -C 6 )-alkylene-heterocycle, (C 3 -C 10 )-cycloalkyl, (C 6 -C 10 )-aryl or heterocycle; with the proviso that R1=R2=R3=methyl are excluded; R7 and R8 are independently selected from the group consisting of H, (C 1 -C 6 )-alkyl, (C 3 -C 10 )-cycloalkyl, aryl, heterocycle (C 1 -C 4 )-alkylene-(C 6 -C 10 )-aryl and (C 1 -C 4 )-alkylene-heterocycle; R4 is hydrogen; R11, R12, R13, R14, R15 and R16 are independently selected from the group consisting of H, (C 1 -C 6 )-alkyl or C3-C7-cycloalkyl, (C 1 -C 4 )-alkylene-aryl and (C 1 -C 4 )-alkylene-heterocycle; and n is 0; or a pharmaceutically acceptable salt thereof.