Nitrogen-containing fused heterocyclic compounds serve as essential constituents in natural products and active pharmaceutical agents, displaying a diverse array of biological activities such as antibacterial, antitumor, analgesic, antiarrhythmic, hypotensive, and immunomodulatory effects [1]. Among these, pyrazolo[1,2-a]cinnolinones represent a notable subclass of fused heterocycles that incorporate both cinnoline and pyrazolone frameworks, exhibiting exceptional bioactivity.
