2,3-Benzodiazepine (2,3-BDZ) compounds represent a group of structurally varied antagonists of α- amino-3-hydroxy-5-methyl-4-isoxazole propionic acid (AMPA) receptor. AMPA receptor antagonists are required to treat AMPA receptor anomalies associated with neurological illnesses, including epilepsy and stroke. Five new 2,3-BDZ compounds were tested on AMPA receptors using patch-clamp electrophysiol- ogy, while cancer cells (i.e., Hep3B, HepG2, Hela, and MCF-7) were examined using the MTS assay. Our findings indicated that adding an electron-withdrawing group (i.e., Cl or Br) inhibited AMPA receptors the most in reducing AMPA receptor cell currents and affecting the kinetics of AMPA receptors (i.e., desensi- tization and deactivation). Moreover, the phenyl ring of 2,3-benzodiazepine is critical for AMPA receptor binding to the affected com pounds. In addition, 4b and 4e showed a potential cytotoxicity effect against Hep3B, HepG2, Hela, and MCF-7, especially Hep3B. 2,3-benzodiazepine derivatives showed neuroprotec- tion against AMPA receptors and cytotoxicity that may be employed in several applications.