The Discovery of <i>N</i>-[5-(4-Bromophenyl)-6-[2-[(5-bromo-2-pyrimidinyl)oxy]ethoxy]-4-pyrimidinyl]-<i>N</i>′-propylsulfamide (Macitentan), an Orally Active, Potent Dual Endothelin Receptor Antagonist

Martin H. Bolli, Christoph Boss, Christoph A. Binkert, Stephan Buchmann, Daniel Bur, Patrick Hess, Marc Iglarz, Solange Meyer, Josiane Rein, Markus Rey,

Journal of Medicinal Chemistry · 2012 · 148 citations · 34 references

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Abstract

Starting from the structure of bosentan (1), we embarked on a medicinal chemistry program aiming at the identification of novel potent dual endothelin receptor antagonists with high oral efficacy. This led to the discovery of a novel series of alkyl sulfamide substituted pyrimidines. Among these, compound 17 (macitentan, ACT-064992) emerged as particularly interesting as it is a potent inhibitor of ET(A) with significant affinity for the ET(B) receptor and shows excellent pharmacokinetic properties and high in vivo efficacy in hypertensive Dahl salt-sensitive rats. Compound 17 successfully completed a long-term phase III clinical trial for pulmonary arterial hypertension.

References

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