Claims for Patent: 8,748,413

Summary for Patent: 8,748,413

Title:	Benzoic acid, benzoic acid derivatives and heteroaryl carboxylic acid conjugates of hydrocodone, prodrugs, methods of making and use thereof
Abstract:	The presently described technology provides compositions comprising aryl carboxylic acids chemically conjugated to hydrocodone (morphinan-6-one, 4,5-alpha-epoxy-3-methoxy-17-methyl) to form novel prodrugs/compositions of hydrocodone, including benzoates and heteroaryl carboxylic acids, which have a decreased potential for abuse of hydrocodone. The present technology also provides methods of treating patients, pharmaceutical kits and methods of synthesizing conjugates of the present technology.
Inventor(s):	Mickle; Travis (Coralville, IA), Guenther; Sven (Coralville, IA), Mickle; Christal (Coralville, IA), Chi; Guochen (Coralville, IA), Kanski; Jaroslaw (Blacksburg, VA), Martin; Andrea K. (Fincastle, VA), Bera; Bindu (Blacksburg, VA)
Assignee:	KemPharm, Inc. (Coralville, IA)
Application Number:	13/888,578
Patent Claims:	1. A composition comprising a salt of a conjugate, wherein the conjugate is benzoate-hydrocodone (Bz-HC) having the following structure: ##STR00025## 2. The composition of claim 1, wherein the salt of the conjugate is used to treat narcotic or opioid abuse; to reduce narcotic or opioid withdrawal; to treat moderate to severe pain; to reduce oral, intranasal or intravenous drug abuse; or to provide oral, intranasal or parenteral drug abuse resistance. 3. The composition of claim 1, wherein the salt of the conjugate exhibits an improved AUC and rate of release over time when compared to unconjugated hydrocodone over the same time period; exhibits less variability in the oral PK profile when compared to unconjugated hydrocodone; or has reduced side effects when compared with unconjugated hydrocodone. 4. The composition of claim 3, wherein the reduced side effect is gastrointestinal dysfunction. 5. The composition of claim 4, wherein the gastrointestinal dysfunction is constipation, decreased hydrochloric acid secretion in the stomach, decreased gastric motility, esophageal reflux or combinations thereof. 6. The composition of claim 1, wherein the salt of the conjugate is provided in a dosage form selected from the group consisting of: a tablet, a capsule, a caplet, a suppository, a troche, a lozenge, an oral powder, a solution, an oral film, a thin strip, a slurry, and a suspension. 7. The composition of claim 6, wherein the dosage form further comprises at least one excipient. 8. The composition of claim 7, wherein the excipient is an antiadherent, binder, coating, disintegrant, filler, flavor, color, glidant, lubricant, preservative, sorbent, sweetener or mixtures and combinations thereof. 9. The composition of claim 1, wherein the salt of the conjugate is provided in an amount sufficient to provide a therapeutically bioequivalent AUC when compared to unconjugated hydrocodone. 10. The composition of claim 1, wherein the salt of the conjugate is provided in an amount sufficient to provide a therapeutically bioequivalent AUC and C.sub.max when compared to an equivalent molar amount of unconjugated hydrocodone. 11. The composition of claim 1, wherein the salt of the conjugate is provided in an amount sufficient to provide a therapeutically bioequivalent AUC and a lower C.sub.max when compared to an equivalent molar amount of unconjugated hydrocodone. 12. The composition of claim 1, wherein the salt of the conjugate is an acetate, L-aspartate, besylate, bicarbonate, carbonate, D-camsylate, L-camsylate, citrate, edisylate, fumarate, gluconate, hydrobromide/bromide, hydrochloride/chloride, D-lactate, L-lactate, D,L-lactate, D,L-malate, L-malate, mesylate, pamoate, phosphate, succinate, sulfate, D-tartrate, L-tartrate, D,L-tartrate, meso-tartrate, benzoate, gluceptate, D-glucuronate, hybenzate, isethionate, malonate, methylsulfate, 2-napsylate, nicotinate, nitrate, orotate, stearate, tosylate, acefyllinate, aceturate, aminosalicylate, ascorbate, borate, butyrate, camphorate, camphocarbonate, decanoate, hexanoate, cholate, cypionate, dichloroacetate, edentate, ethyl sulfate, furate, fusidate, galactarate, mucate, galacturonate, gallate, gentisate, glutamate, glutarate, glycerophosphate, heptanoate, enanthate, hydroxybenzoate, hippurate, phenylpropionate, iodide, xinafoate, lactobionate, laurate, maleate, mandelate, methanesulfonate, myristate, napadisilate, oleate, oxalate, palmitate, picrate, pivalate, propionate, pyrophosphate, salicylate, salicylsulfate, sulfosalicylate, tannate, terephthalate, thiosalicylate, tribrophenate, valerate, valproate, adipate, 4-acetamidobenzoate, camsylate, octanoate, estolate, esylate, glycolate, thiocyanate, undecylenate or mixtures and combinations thereof. 13. The composition of claim 12, wherein the salt of the conjugate is a hydrochloride salt. 14. The composition of claim 13, wherein the ratio of conjugate to salt of the conjugate ranges from about 1:0.1 to about 1:10. 15. The composition of claim 13, wherein the ratio of conjugate to salt of the conjugate ranges from about 1:0.5 to about 1:2. 16. The composition of claim 13, wherein the ratio of conjugate to salt of the conjugate is about 1:1. 17. The composition of claim 1, wherein the composition includes from about 0.5 mg to about 100 mg of the salt of the conjugate. 18. The composition of claim 1, wherein the composition is in a pharmaceutical kit. 19. The composition of claim 18, wherein the pharmaceutical kit contains from about 1 to about 100 individual dosages.