Patent ID: 8546357

Claim:
A compound having a structure of formula I or II: wherein A is where * is bonded to the carbonyl; Y is hydrogen, fluoro, chloro, or bromo; R 1 is phenyl substituted 2-4 times, said substitutions comprising i) 1-4 substitutions with the same or different of halo, and 0-1 substitutions with methyl, difluoromethyl, trifluoromethyl, methoxy, trifluoromethoxy, or trifluoroethoxy, or ii) 2 trifluoromethyl groups; R 2 is methyl, fluoromethyl, trifluoromethyl, or perfluoroethyl; R 3a and R 3b are independently selected from hydrogen, methyl, ethyl, fluoromethyl, or R 3a and R 3b combine with the carbon to which they are attached to form a cyclopentyl ring or a cyclohexyl ring; Z is —CH 2 —, —CH 2 —CH 2 —, —CH(CH 3 )—, or —C(CH 3 ) 2 —; and R 6 is hydrogen or methyl; or a salt thereof.