The present invention provides methods of preparing compound of Formula (I), wherein the compounds are represented by the structure of Formula (I) wherein: R.sup.1 each is independently F, Cl, Br, I, OCH.sub.3, CN or NO.sub.2; R.sup.2 each is independently identical or different C.sub.1-C.sub.5 alkyl; n.sup.1 is an integer between 1 and 5; and n.sup.2 is an integer between 1 and 4. In addition, the present invention provides a compound represented by the following structures: Compound (1a) and Compound (2), wherein X comprises: chloride, acetate, adipate, alginate, ascorbate, aspartate, benzoate, benzenesulfonate, bisulfate, borate, butyrate, citrate, camphorate, camphorsulfonate, cyclopentanepropionate, digluconate, dodecylsulfate, ethanesulfonate, fumarate, glucoheptanoate, glycerophosphate, hemisulfate, heptanoate, hexanoate, hydroiodide, maleate, 2-hydroxyethanesulfonate, lactate, methanesulfonate, 2-naphthalenesulfonate, nicotinate, nitrate, oxalate, pectinate, persulfate, 3-phenylpropionate, phosphate, picrate, pivalate, propionate, salicylate, succinate, sulfate, sulfonate, tartrate, thiocyanate, toluenesulfonate, or undecanoate salt, or any combination thereof. ##STR00001##

Provided herein are compounds of Formula (I) and Formula (II) and stereoisomers, tautomers, and pharmaceutically acceptable salts or solvates thereof. Also provided are pharmaceutical compositions comprising these compounds and methods of treating a disease, disorder, or condition by using the compounds and pharmaceutical compositions. ##STR00001##

Provided herein are compounds of Formula (I) and Formula (II) and stereoisomers, tautomers, and pharmaceutically acceptable salts or solvates thereof. Also provided are pharmaceutical compositions comprising these compounds and methods of treating a disease, disorder, or condition by using the compounds and pharmaceutical compositions. ##STR00001##