Ligands of adenine nucleotide translocase (ANT) and compositions and methods related thereto

Abstract

Compounds which have utility in the treatment of conditions associated with altered mitochondrial function. The compounds have the following structure (I): including stereoisomers, prodrugs, and pharmaceutically acceptable salts thereof, wherein R 1 , R 2 , R 3 , R 4 , R 5 and R 6 are as defined herein. Pharmaceutical compositions containing a compound of structure (I), as well as methods relating to the use thereof, are also disclosed.

1 . A compound having the following structure:  
       
         
           
           
               
               
           
         
       
       or a stereoisomer, prodrug or pharmaceutically acceptable salt thereof, wherein: 
 R 1  is hydrogen, halogen, nitro, cyano, alkyl, substituted alkyl, alkoxy, hydroxy, aryl, substituted aryl, —NHC(═O)R′, heteroaryl or substituted heteroaryl;  
 R 2 , R 3 , R 5  and R 6  are the same or different and independently hydrogen, halogen, nitro, cyano, alkyl, substituted alkyl, alkoxy, hydroxy, aryl, substituted aryl, heteroaryl or substituted heteroaryl;  
 R 4  is hydrogen, halogen, nitro, cyano, alkyl, substituted alkyl, aryl, substituted aryl, arylalkyl, substituted arylalkyl, heteroaryl, substituted heteroaryl, heteroarylalkyl, substituted heteroarylalkyl, —O—R 7 , —C(═O)—R 7 , —C(═O)O—R 7 , —C(═O)—NH—R 7  or —NHC(═O)R″;  
 R 7  is hydrogen, alkyl, substituted alkyl, aryl, substituted aryl, arylalkyl or substituted arylalkyl;  
 R′ and R″ are the same or different and independently alkyl, substituted alkyl, aryl, substituted aryl, heteroaryl or substituted heteroaryl; and  
 R 4  and R 5  or R 5  and R 6 , taken together with the carbon atoms to which they are attached, optionally form a substituted or unsubstituted homocycle.  
 
     
     
         2 . The compound of  claim 1  wherein R 1  is hydrogen  
     
     
         3 . The compound of  claim 1  wherein R 1  is alkyl.  
     
     
         4 . The compound of  claim 3  wherein alkyl is methyl.  
     
     
         5 . The compound of  claim 3  wherein alkyl is —C(CH 3 ) 2 —CH 2 —C(CH 3 ) 2 —CH 3 .  
     
     
         6 . The compound of  claim 1  wherein R 2  is hydrogen.  
     
     
         7 . The compound of  claim 1  wherein R 3  is hydrogen.  
     
     
         8 . The compound of  claim 1  wherein R 4  is hydrogen.  
     
     
         9 . The compound of  claim 1  wherein R 4  is halogen.  
     
     
         10 . The compound of  claim 1  wherein R 4  is alkyl.  
     
     
         11 . The compound of  claim 10  wherein alkyl is tert-butyl.  
     
     
         12 . The compound of  claim 1  wherein R 4  is heteroaryl.  
     
     
         13 . The compound of  claim 12  wherein heteroaryl is thiophenyl.  
     
     
         14 . The compound of  claim 1  wherein R 5  is hydrogen.  
     
     
         15 . The compound of  claim 1  wherein R 5  is halogen.  
     
     
         16 . The compound of  claim 1  wherein R 6  is hydrogen.  
     
     
         17 . The compound of  claim 1  wherein R 6  is halogen.  
     
     
         18 . A composition comprising a compound of  claim 1  in combination with a pharmaceutically acceptable carrier.  
     
     
         19 . A method for treating or preventing a condition in a mammal associated with altered mitochondrial function, comprising administering to a mammal in need thereof an effective amount of a composition of  claim 18 .  
     
     
         20 . The method of  claim 19  wherein the condition is: Alzheimer's Disease; diabetes mellitus; obesity; Parkinson's Disease; Huntington's disease; dystonia; Leber's hereditary optic neuropathy; schizophrenia; mitochondrial encephalopathy, lactic acidosis, and stroke (MELAS); cancer; psoriasis; hyperproliferative disorders; mitochondrial diabetes and deafness (MIDD); myoclonic epilepsy ragged red fiber syndrome; osteoarthritis; or Friedrich's ataxia.