Patent ID: 8426432

Claim:
A compound of formula I wherein R is selected from the group consisting of H, C 1-5 -alkyl, C 1-3 -alkoxy, and hydroxy; wherein R 1 , R 2 , R 3 , and R 4 are each independently selected from the group consisting of hydrogen, C 1-5 -alkyl, and cycloalkyl; wherein A and B are each independently selected from the group consisting of hydrogen, C 1-5 alkyl, hydroxy, and C 1 to C 6 alkoxy, provided that at least one of A and B is not C 1-5 alkyl, or A and B together with the carbon to which they are connected form a ring of from 3 to 7 members wherein the ring members are selected form the group consisting of alkylene, alkenylene, and alkynylene; and wherein V, W, X, Y, and Z are each independently selected from the group consisting of hydrogen, halogen, lower alkoxy, and phenyl, wherein the phenyl substituent may itself be optionally substituted with halogen, lower haloalkyl, lower alkyl, lower alkoxy, or lower alkylsulfonyl, wherein “lower” used in conjunction with any of the above groups is C 1 to C 6 , and at least one of V, W, X, Y, and Z is a methoxy group; or a pharmaceutically acceptable salt thereof.