SYNTHESIS, CRYSTAL STRUCTURE, AND DFT STUDY OF 4-(2-CHLOROBENZYL)-1-(5-NITRO-2-(PYRROLIDIN-1-YL)PHENYL)- [1,2,4]TRIAZOLO[4,3-a]QUINAZOLIN-5(4H)-ONE

4-(2-Chlorobenzyl)-1-(5-nitro-2-(pyrrolidin-1-yl)phenyl)-[1,2,4]triazolo[4,3-a]quinazo-lin-5(4H)-one is a derivative of quinazolinones with antitumor, antibacterial, anti-inflammatory, and antimicrobial effects. Using diabetic jujube as a raw material, the title compound is synthesized by substitution and cyclization steps. The structure of the target compound is confirmed by FTIR, H-1 and C-13 NMR, and MS spectroscopies. The precise structure of the 4-(2-chlorobenzyl)-1-(5-nitro-2-(pyrrolidin-1-yl)phenyl)-[1,2,4]triazolo[4,3-a]quinazolin-5(4H)-one compound is analyzed by single crystal X-ray diffraction (XRD). The molecular structure is further calculated using density functional theory (DFT) and the result is compared with the XRD value. The molecular electrostatic potential and frontier molecular orbitals of the title compound are investigated using DFT. In addition, the obtained atomic coordinates for the single crystal of the compound are then applied in a molecular docking simulation, and the title compound is found to participate in a number of important binding interactions in the SHP2 binding sites.