Use of (2r, 6r)-hydroxynorketamine, (s)-dehydronorketamine and other stereoisomeric dehydro and hydroxylated metabolites of (r,s)-ketamine in the treatment of depression and neuropathic pain

Abstract

The disclosure also provides novel ketamine metabolite prodrugs. The disclosure provides methods of treating, bipolar depression, major depressive disorder, neuropathic and chronic pain, including complex regional pain synthetic pain disorder (CRPD) by administering a purified ketamine metabolite or a ketamine metabolite prodrug directly to patients in need of such treatment.

1 - 36 . (canceled) 
     
     
         37 . A pharmaceutical composition comprising a compound or a pharmaceutically acceptable salt thereof, wherein the compound is 
       
         
           
           
               
               
           
         
       
       together with a pharmaceutically acceptable excipient; wherein
 (a) the composition is a solution and contains from about 0.05 mg/ml to about 0.5 mg/ml of the compound; 
 (b) the composition is an intravenous composition that provides about 0.2 mg to about 500 mg per administration; or 
 (c) the composition is formulated for oral administration and contains about 0.2 mg to about 500 mg of the compound. 
 
     
     
         38 . A pharmaceutical composition comprising a compound or pharmaceutically acceptable salt thereof, where the compound is a compound of the formula 
       
         
           
           
               
               
           
         
       
       together with a pharmaceutically acceptable excipient; wherein
 (a) the composition is a solution and contains from about 0.05 mg/ml to about 0.5 mg/ml of the compound; 
 (b) the composition is an intravenous composition that provides about 0.2 mg to about 500 mg per administration; or 
 (c) the composition is formulated for oral administration and contains about 0.2 mg to about 500 mg of the compound. 
 
     
     
         39 . An intravenous pharmaceutical composition comprising a compound or pharmaceutically acceptable salt thereof, where the compound is a compound of the formula 
       
         
           
           
               
               
           
         
       
       and the intravenous pharmaceutical composition provides a plasma Cmax of about 0.25 mcg/mL to about 125 mcg/mL 
     
     
         40 . The intravenous pharmaceutical composition of  claim 39 , wherein the composition provides a plasma Cmax of about 1 mcg/mL to about 50 mcg/mL 
     
     
         41 . The pharmaceutical composition of claim  1 , wherein the compound is 2R,6R-hydroxynoreketamine. 
     
     
         42 . The pharmaceutical composition of  claim 38 , wherein the composition is a solution and contains from about 0.05 mg/ml to about 0.5 mg/ml of the compound or salt thereof. 
     
     
         43 . The pharmaceutical composition of  claim 38 , wherein the composition is an intravenous composition that provides about 0.2 mg to about 500 mg of the compound per administration. 
     
     
         44 . The pharmaceutical composition of  claim 38 , wherein the composition is formulated for oral administration and contains about 0.2 mg to about 500 mg of the compound or salt thereof. 
     
     
         45 . The pharmaceutical composition of  claim 38 , wherein the composition is formulated for oral administration and contains about 10 mg to about 200 mg of the compound or salt thereof. 
     
     
         46 . A method of treating bipolar depression, major depressive disorder, schizophrenia, Alzheimer's dementia, amyotrophic lateral sclerosis, complex regional pain syndrome (CRPS), chronic pain, or neuropathic pain in a patient comprising administering an effective amount of a pharmaceutical composition of  claim 37  to the patient. 
     
     
         47 . A method of treating bipolar depression, major depressive disorder, schizophrenia, Alzheimer's dementia, amyotrophic lateral sclerosis, complex regional pain syndrome (CRPS), chronic pain, or neuropathic pain in a patient comprising administering an effective amount of a pharmaceutical composition of  claim 38  to the patient. 
     
     
         48 . A method of treating a patient for bipolar depression, major depressive disorder, schizophrenia, Alzheimer's dementia, amyotrophic lateral sclerosis, complex regional pain syndrome (CRPS), chronic pain, or neuropathic pain comprising
 (1) determining that the patient is a ketamine non-responder; and   (2) administering an effective amount of a pharmaceutical composition of  claim 38  to the patient.