SSR182289A, a selective and potent orally active thrombin inhibitor
SSR182289A 1 is the result of a rational optimisation process leading to an orally active thrombin inhibitor. The structure incorporates an original 2-(acetylamino)-[1,1′-biphenyl]-3-sulfonyl N-terminal motif, a central L-Arg surrogate carrying a weakly basic 3-amino-pyridine, and an unusual 4-difluoropiperidine at the C-terminus. Its synthesis is convergent and palladium catalysis has been employed for the construction of the key C-C bonds: Suzuki coupling for the bis-aryl fragment and Sonogashira reaction for the δ-ε bond of the central amino-acid chain. The compound is a potent inhibitor of thrombin's activities in vitro and demonstrates potent oral anti-thrombotic potencies in three rat models of thrombosis. The observed in vitro potency could be rationalized through the examination of the interactions within the SSR182289A 1 - thrombin crystal structure. SSR182289A 1, has been therefore selected for further development.
Altenburger, Jean-Michel,Lassalle, Gilbert Y.,Matrougui, Mostapha,Galtier, Daniel,Jetha, Jean-Claude,Bocskei, Zsolt,Berry, Christopher N.,Lunven, Catherine,Lorrain, Janine,Herault, Jean-Pascal,Schaeffer, Paul,O'Connor, Stephen E.,Herbert, Jean-Marc
p. 1713 - 1730
(2007/10/03)
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