US2012123119A1PendingUtilityA1

Acyclic nucleoside derivatives

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Assignee: ENGELHARDT PERPriority: Feb 16, 1996Filed: Jan 20, 2012Published: May 17, 2012
Est. expiryFeb 16, 2016(expired)· nominal 20-yr term from priority
Inventors:Per EngelhardtMarita HogbergXiao-Xiong ZhouNils-Gunnar JohanssonBjorn Lindborg
A61P 31/18A61P 31/12C07D 473/18Y02P20/55C07D 473/00A61P 31/22C07D 473/32
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Claims

Abstract

Methods and novel intermediates for the preparation of and the treatment with acyclic nucleoside derivatives of the formula: where one of R 1 and R 2 is an amino acid acyl group and the other of R 1 and R 2 is a —C(O)C 3 —C 21 saturated or monounsaturated, optionally substituted alkyl and R 3 is OH or H.

Claims

exact text as granted — not AI-modified
1 .- 7 . (canceled) 
     
     
         8 . A pharmaceutical composition comprising the compound 9-[2-stearoyloxymethyl)-4-(L-valyloxy)butyl]guanine wherein at least 90% of said compound is the 2R enantiomer: 
       
         
           
           
               
               
           
         
         wherein
 R 1  is —C(O)C 17  saturated alkyl; 
 R 2  is L-valyl; and 
 R 3  is OH.

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