US Patent Issued to SANOFI on March 24 for "Derivatives of imidazo[4,5-dpyridazine, their preparation and their therapeutic application" (French Inventors)

ALEXANDRIA, Va., March 24 -- United States Patent no. 12,583,861, issued on March 24, was assigned to SANOFI (Paris).

"Derivatives of imidazo[4,5-dpyridazine, their preparation and their therapeutic application" was invented by Jidong Zhang (Paris), Yannick Benedetti (Paris), Esther Arranz (Paris), Andreas Karlsson (Paris), Marie-Priscille Brun (Paris) and Francois Bretin (Paris).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention relates to a compound of formula (I) wherein R1 represents H, (C1-C6)alkyl-; hydroxy-(C1-C6)alkyl-; NH2-(C1-C6)alkyl-; NH-(C1-C6)alkyl-(C1-C6)alkyl-; N((C1-C6)alkyl)2-(C1-C6)alkyl-; (C2-C6)alkenyl-; (C2-C6)alkynyl-; phenyl(C1-C6)alkyl-; (C3-C10)cycloalkyl(C1-C6)alky...