Benzo- and thienobenzo- diazepines: multi-target drugs for CNS disorders

Mini Rev Med Chem. 2015;15(8):630-47. doi: 10.2174/1389557515666150219125030.

Abstract

Benzodiazepines (BZ or BZD) are a class of gabaminergic psychoactive chemicals used in hypnotics, sedation, in the treatment of anxiety, and in other CNS disorders. These drugs include alprazolam (Xanax), diazepam (Valium), clonazepam (Klonopin), and others. There are two distinct types of pharmacological binding sites for benzodiazepines in the brain (BZ1 and BZ2), these sites are on GABA-A receptors, and are classified as short, intermediate, or long-acting. From the thienobenzodiazepine class (TBZ), Olanzapine (2-methyl-4-(4-methyl-l-piperazinyl)-10H-thieno[2,3-b][1,5]benzodiazepine) (Zyprexa) was used as an example to demonstrate the antagonism of this class of compounds for multiples receptors including: dopamine D1-D5, α-adrenoreceptor, histamine H1, muscarinic M1-M5 and 5-HT2A, 5-HT2B, 5-HT2C, 5-HT3 and 5-HT6 receptors. Olanzapine is an atypical antipsychotic agent, structurally related to clozapine, and extensively used for the treatment of schizophrenia, bipolar disorder-associated mania, and the behavioral symptoms of Alzheimer's disease. The functional blockade of these multiple receptors contributes to the wide range of its pharmacologic and therapeutic activities, having relatively few side effects when compared to other antipsychotics agents. Thienobenzodiazepines (such as Olanzapine) are characterized as multi- receptor- targeted- acting- agents. This mini-review discusses these 2 drug classes that act on the central nervous system, the main active compounds used, and the various receptors with which they interact. In addition, we propose 12 olanzapine analogues, and generated Random Forest models, from a data set obtained from the ChEMBL database, to classify the structures as active or inactive against 5 dopamine receptors (D1, D2, D3, D4, D5 and D6), and dopamine transporter.

Publication types

  • Research Support, Non-U.S. Gov't
  • Review

MeSH terms

  • Animals
  • Antipsychotic Agents / chemistry*
  • Antipsychotic Agents / pharmacology*
  • Antipsychotic Agents / therapeutic use
  • Benzodiazepines / chemistry*
  • Benzodiazepines / pharmacology*
  • Benzodiazepines / therapeutic use
  • Central Nervous System / drug effects*
  • Central Nervous System / metabolism
  • Central Nervous System / pathology
  • Central Nervous System Diseases / drug therapy
  • Central Nervous System Diseases / metabolism
  • Humans
  • Molecular Targeted Therapy* / methods
  • Olanzapine
  • Polypharmacology*
  • Receptors, Adrenergic, alpha / metabolism
  • Receptors, Dopamine / metabolism
  • Receptors, Histamine H1 / metabolism
  • Receptors, Muscarinic / metabolism
  • Selective Serotonin Reuptake Inhibitors / chemistry
  • Selective Serotonin Reuptake Inhibitors / pharmacology
  • Selective Serotonin Reuptake Inhibitors / therapeutic use
  • gamma-Aminobutyric Acid / metabolism

Substances

  • Antipsychotic Agents
  • Receptors, Adrenergic, alpha
  • Receptors, Dopamine
  • Receptors, Histamine H1
  • Receptors, Muscarinic
  • Serotonin Uptake Inhibitors
  • Benzodiazepines
  • gamma-Aminobutyric Acid
  • Olanzapine