Patent ID: 8377422

Claim:
A compound of formula (I) wherein R 1 is selected from phenyl, phenyl substituted with 1, 2, 3 or more substitutents selected from C 1 -C 3 alkyl, C 2 -C 4 alkenyl, and RO wherein R is selected from hydrogen and C 1 -C 3 alkyl, pyridyl, pyridyl substituted with 1, 2, 3 or more substitutents selected from C 1 -C 3 alkyl, C 2 -C 4 alkenyl, and RO wherein R is selected from hydrogen and C 1 -C 3 alkyl, thienyl, and thienyl substituted with 1, 2, or 3 substitutents selected from C 1 -C 3 alkyl, C 2 -C 4 alkenyl, and RO wherein R is selected from hydrogen and C 1 -C 3 alkyl; n+m is 1 or 2, and R 2 is hydrogen; or n is 1 or 2, and m is 1 or 0; R 2 is selected from methyl, and hydroxyl; or R 2 is a bivalent atom forming together with one carbon atom of R 1 a 5 or 6 membered heterocyclic ring; R 3 is hydrogen, and R 4 and R 5 together with the carbon atom to which they are attached form p-menthyl; or R 3 is methyl and R 4 and R 5 are iso-propyl.