Abstract:
:The synthetic pentasaccharide (1) corresponding to the heparin sequence which binds to, and activates, antithrombin III (AT III) is a potent antithrombotic compound in several animal models of venous thrombosis. We describe here the preparation and the pharmacological properties of 34, an analogue of oligosaccharide 1 with the latter's N-sulfates being replaced by sulfate esters and hydroxyl groups being methylated. These structural modifications allow a simpler and more efficient synthesis of such anionic oligosaccharides. Affinity for human AT III, anti-factor Xa activity, ability to inhibit thrombin generation, antithrombotic activity in a rat model of venous thrombosis, and elimination half-life in the rat have been determined for 1 and 34. Surprisingly, introduction of O-sulfates in place of N-sulfates, and methylation of hydroxyl groups, contributes to reinforce the binding to AT III, resulting in an improved pharmacological profile.
journal_name
J Med Chemjournal_title
Journal of medicinal chemistryauthors
Petitou M,Duchaussoy P,Jaurand G,Gourvenec F,Lederman I,Strassel JM,Bârzu T,Crépon B,Hérault JP,Lormeau JC,Bernat A,Herbert JMdoi
10.1021/jm960726zsubject
Has Abstractpub_date
1997-05-23 00:00:00pages
1600-7issue
11eissn
0022-2623issn
1520-4804pii
jm960726zjournal_volume
40pub_type
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