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Compositions Comprising Enzyme-Cleavable Amphetamine Prodrugs and Inhibitors Thereof

a technology of enzyme-cleavage amphetamine and amphetamine inhibitor, which is applied in the direction of biocide, amide active ingredients, peptide/protein ingredients, etc., can solve the problems of patients being denied treatment, amphetamines are susceptible to misuse, abuse or overdose, and the access to these types of drugs is expensive to administer, so as to improve patient compliance, reduce side effects of therapy, and improve patient compliance

Inactive Publication Date: 2013-03-07
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The patent describes methods for treating patients with compositions or dose units containing a combination of an amphetamine prodrug and a GI enzyme inhibitor. These methods can reduce side effects, improve patient compliance with a therapy, and deter misuse or abuse of multiple dose units. The patent also describes methods for identifying suitable combinations of an amphetamine prodrug and a GI enzyme inhibitor for formulation in a dose unit. These methods can help develop a dose that provides a desired pharmacokinetic profile. Overall, the patent provides technical means for using these compositions for the treatment of patients with amphetamine prodrug.

Problems solved by technology

Amphetamines are susceptible to misuse, abuse, or overdose.
The control of access to these types of drugs is expensive to administer and can result in denial of treatment for patients suffering from conditions such as Attention Deficit Hyperactivity Disorder (ADHD), Chronic Fatigue Syndrome (CFS), brain injury, narcolepsy, or obesity.
Furthermore, control of use is often ineffective, leading to substantial morbidity and deleterious social consequences.

Method used

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  • Compositions Comprising Enzyme-Cleavable Amphetamine Prodrugs and Inhibitors Thereof
  • Compositions Comprising Enzyme-Cleavable Amphetamine Prodrugs and Inhibitors Thereof
  • Compositions Comprising Enzyme-Cleavable Amphetamine Prodrugs and Inhibitors Thereof

Examples

Experimental program
Comparison scheme
Effect test

example 1

Synthesis of Amphetamine Prodrug Compounds

Synthesis of Amphetamine-arginine-acetate (Compound AM-1; also referred to as 2-acetylamino-5-guanidino-pentanoic acid ((R)-1-methyl-2-phenyl-ethyl)-amide) and Amphetamine-arginine-malonic acid (Compound AM-2; also referred to as N-[4-guanidino-1-((R)-1-methyl-2-phenyl-ethylcarbamoyl)-butyl]-malonic acid)

[0391]

Preparation of Compound A

[0392]D-Amphetamine sulfate (5.0 g, 27.1 mmol), Boc-Arg(Pbf)-OH (10.0 g, 19.0 mmol) and HATU (10.8 g, 28.5 mmol) were suspended in DMF (100 mL), brought to 5° C. and treated drop wise with DIEA (13.3 mL, 76.0 mmol) over 10 min. The reaction mixture was stirred at 5° C. for an additional 10 min, warmed to ambient temperature, followed by stirring for 30 min. The reaction was then diluted with EtOAc (400 mL) and poured into water (600 mL). The layers were separated, the aqueous layer extracted with EtOAc (3×300 mL) and the combined organic layers washed with 2% aq. H2SO4 (150 mL), water (2×600 mL) and brine (600 ...

example 2

Synthesis of Amphetamine-arginine-N-methyl (Compound AM-4)

[0398]

Preparation of Compound E

[0399]D-Amphetamine sulfate (496 mg, 2.68 mmol), Boc-N-Me-Arg(Mtr)-OH (940 mg, 1.88 mmol) and HATU (855 mg, 2.25 mmol) were suspended in DMF (20 mL), cooled to 5° C. and treated drop wise with DIEA (1.9 mL, 10.7 mmol) over 5 min. After addition, the reaction mixture was stirred at 5° C. for an additional 10 min. Next, the reaction was warmed to ambient temperature and stirred for 30 min. The reaction was then diluted with EtOAc (250 mL) and poured into water (200 mL). The layers were separated, the aqueous layer extracted with EtOAc (2×150 mL), and the combined organic layers washed with 2% aq. H2SO4 (50 mL), water (2×300 mL) and brine (200 mL). The organic layer was dried over MgSO4, filtered and concentrated in vacuo to give compound E in quantitative yield (1.28 g, 1.88 mmol) as a colorless foamy solid. LC-MS [M+H] 618.6 (C31H47N5O6S+H, calc: 618.3). Compound E was used without further purifi...

example 3

Synthesis of Amphetamine-lysine-acetate (Compound AM-5)

[0401]

[0402]Compound AM-5 was prepared following the method described in Example 1 to prepare Amphetamine-arginine-acetate (Compound AM-1), but using Fmoc-Lys(Boc)-OH instead of Boc-Arg(Pbf)-OH, piperidine instead of HCl in dioxane (for deprotection of Fmoc group on α-nitrogen of Lys), and lastly HCl in dioxane for Boc deprotection of the Lys reside. LC-MS [M+H] 306.6 (C17H28N3O2+H, calc: 306.2).

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Abstract

Pharmaceutical compositions and their methods of use are provided, where the pharmaceutical compositions comprise an amphetamine prodrug that provides enzymatically-controlled release of amphetamine or an amphetamine analog. The composition can further comprise an enzyme inhibitor that interacts with the enzyme(s) that mediates the enzymatically-controlled release of amphetamine or the amphetamine analog from the amphetamine prodrug so as to attenuate enzymatic cleavage of the amphetamine prodrug.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application claims priority benefit of the U.S. Provisional Application Ser. No. 61 / 326,609 filed on Apr. 21, 2010; the disclosure of which application is herein incorporated by reference in its entirety.INTRODUCTION[0002]Amphetamines are susceptible to misuse, abuse, or overdose. Use of and access to these drugs therefore needs to be controlled. The control of access to these types of drugs is expensive to administer and can result in denial of treatment for patients suffering from conditions such as Attention Deficit Hyperactivity Disorder (ADHD), Chronic Fatigue Syndrome (CFS), brain injury, narcolepsy, or obesity. Furthermore, control of use is often ineffective, leading to substantial morbidity and deleterious social consequences. Current existing amphetamine drug products provide no significant barriers to abuse and misuse by patients.SUMMARY[0003]The present disclosure provides pharmaceutical compositions, and their methods of...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): A61K31/197C07C279/14C12Q1/02C07C237/22A61K31/165
CPCA61K31/16A61K45/06A61K47/48038A61K47/48046C07C279/14C07C237/22A61K2300/00A61K47/542A61K47/543A61K31/165A61K31/24A61K9/0019A61K9/0053
Inventor JENKINS, THOMAS E.HUSFELD, CRAIG O.SEROOGY, JULIE D.WRAY, JONATHAN W.
Owner SIGNATURE THERAPEUTICS
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