Synthesis, spectral, biological activity, and crystal structure evaluation of novel pyrazoline derivatives having sulfonamide moiety

In the present study, synthesis and characterization of pyrazoline derivatives integrated with sulfonamide scaffold have been performed. The characterization of the molecules was done by elemental analysis, ultraviolet-visible, infrared, nuclear magnetic resonance (NMR), and mass spectra. Crystal structure of compounds 2e and 2g were determined by single crystal X-ray diffraction. In the compounds 2e and 2g, the intra molecular hydrogen bonds N15--H15aEuro broken vertical bar O13 and N14--H14aEuro broken vertical bar N1 were closed to form a S(6) ring motif, whereas the N14--H14aEuro broken vertical bar O17 hydrogen bond links, pairs of molecules related by inversion, forming the familiar R-2 (2)(10) ring motif. The Hirshfeld surface analysis comprising of the d (norm) surface plots, electrostatic potentials and two-dimensional fingerprint plots were generated in order to give visual confirmation of the intermolecular interactions. The molecules were screened for their in vitro antitubercular and antimicrobial activity. The molecules 2n and 2m have shown high potent against M. tuberculosis and most of the molecules have shown good potential against different bacteria and fungi.