Patent 7435815 was granted and assigned to Actelion Pharmaceuticals Ltd on October, 2008 by the United States Patent and Trademark Office.
The invention relates to novel sulfonylamino-acetic acid derivatives and their use as active ingredients in the preparation of pharmaceutical compositions. The invention also concerns related aspects including processes for the preparation of such compounds, pharmaceutical compositions containing one or more of those compounds and especially their use as orexin receptor antagonists.