Benzodiazepine-Based Drug Discovery covers benzodiazepines and benzothiazepines, which constitute two pivotal classes of heterocyclic compounds widely used as core structures of medicinal drugs for the treatment of depression, epilepsy, seizures and muscle spasms. 1,4-Benzodiazepine, 1,5-benzodiazepine, and 1,5-benzothiazepine are the most studied groups of benzodiazepines and benzothiazepines because of their outstanding potential biological activities. This book offers a broad range of recent developments and detailed coverage of the synthesis and biological activities of the drugs based on benzodiazepine and benzothiazepine matrixes, and is an ideal reference guide to researchers working in organic and medicinal chemistry. The importance of these privileged pharmacophores is not limited to the treatment of psychotic disorders because minor changes in the structures can generate various biological activities. They represent a wide range of therapeutic functions such as anticonvulsant, antianxiety, anti-depressant, antiviral, anti-HIV, anti-inflammatory, anticoagulant, anti-obesity, endothelin antagonist, cholecystokinin antagonist, and vasopressin receptor antagonist activities.