Thienobenzodiazepine
Appearance
![General structure of thienobenzodiazepines. Core is highlighted by black and color. Grey depicts accessory functional groups.](http://upload.wikimedia.org/wikipedia/commons/thumb/7/73/Examples_of_thienobenzodiazepines.svg/360px-Examples_of_thienobenzodiazepines.svg.png)
Thienobenzodiazepine is a heterocyclic compound containing a diazepine ring fused to a thiophene ring and a benzene ring. Thienobenzodiazepine forms the central core of pharmaceutical drugs including atypical antipsychotic olanzapine (Zyprexa) and antimuscarinic telenzepine. Thienobenzodiazepines act relatively selectively at the α2 subunit of the GABAA receptor.[citation needed]