Synthesis, Intramolecular Cyclization and Antinociceptive Activity of Substituted 2-[2-(4-Nitrobenzoyl)hydrazono]4-oxobut-2-enoic Acids Nitrobenzoyl)
The method of synthesis and intramolecular cyclization of new substituted 2-[2-(4-nitrobenzoyl)hydrazono]-4-oxobut-2-enoic acids with propionic anhydride, which proceeds with the formation of the corresponding substituted 3-hydrazono-3 H -furan-2-ones. The antinociceptive activity of the obtained compounds was also studied.