Patent ID: 8536354

Claim:
A compound having the formula: wherein R 1 , R 2 , R 3 , and R 4 are: a) H, (C 1 -C 6 )alkyl; (C 1 -C 6 )haloalkyl; (C 1 -C 6 )cyanoalkyl; (C 1 -C 6 )hydroxyalkyl; (C 1-4 )alkoxy(C 1 -C 6 )alkyl; (C 2 -C 6 )alkenyl optionally substituted with halo, cyano, hydroxyl, or (C 1 -C 4 )alkyl; (C 2 -C 6 )alkynyl optionally substituted with halo, cyano, hydroxyl, or (C 1 -C 4 )alkyl; (C 3 -C 5 )cycloalkyl optionally substituted with halo, cyano, hydroxyl, or (C 1 -C 4 )alkyl; or b) unsubstituted or substituted benzyl wherein the substituents are independently 1 to 5 H, halo, or (C 1 -C 6 )alkyl; and R 5 is H; OH; F; or Cl; provided that: when R 1 , R 2 , R 3 , and R 4 are isopropyl, then R 5 is not hydroxyl; when R 5 is H, hydroxyl, methoxy, or fluoro, then, at least one of R 1 , R 2 , R 3 , and R 4 is not H; when only one of R 1 , R 2 , R 3 , and R 4 is methyl, and R 5 is H or hydroxyl, then the remainder of R 1 , R 2 , R 3 , and R 4 are not H; when both R 4 and one of R 1 , R 2 , and R 3 are methyl, then R 5 is neither H nor hydroxyl; when R 1 , R 2 , R 3 , and R 4 are all methyl, then R 5 is not hydroxyl; when R 1 , R 2 , and R 3 are all H and R 5 is hydroxyl, then R 4 is not ethyl, n-propyl, n-butyl, allyl, or benzyl.