Highly selective sigma receptor ligands

Compounds having the general formula II, III, or IV wherein R 1 can be a radical of an optionally substituted C-4 to C-7 N-containing heterocycle or a radical of an optionally substituted cyclic or acyclic tertiary amine or isoindoline-1,3-dione: R 2,3,4,5,6 can each independently be any one or combinations of the following moieties, cyano, nitro, acyl, alkyl, amido, azido, isothiocyanate, isocyanate, optionally substituted anilino, halogens, ethers, sulfonamides, thioacyl, nitro, aromatic, heterocyclic, olefinic, acetylene, deuterium, or tritium; Y can be either CH, CH 2 , O, S, OCH 2 , N—R, N—Ar, C—R, C—Ar; Z can be either H, O, S, S—R or NR. R groups can be either H, aryls, alkyls, or cycloalkyls; “n” can be 1 to 5 carbons in length and stereoisomers, functional analogs, and pharmaceutically acceptable salts thereof and wherein the moiety bridging R 1 and N can be a substituted alkylene, optionally substituted alkenylene or optionally substituted alkynylene and where the alkylene group can include an inserted C 3 -C 5 cycloalkyl group, aromatic, and hetercocyclic group; wherein X′ is halogen, or C 1 -C 4 haloalyl; wherein the R x is a C 1 -C 5 straight chain or branched chain alkyl or a C 1 -C 4 straight chain or branched chain haloalkyl.