Benzazepines
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Benzazepines are heterocyclic compounds consisting of a benzene ring fused to an azepine ring. Examples include benzodiazepines, diltiazem, fenoldopam, and galantamine.
If there are two benzene ring condensed on the azepine ring, the compound is called a "Dibenzazepine". The replacement of the S atom of the antipsychotic phenothiazine drugs by a _CH=CH_ group gives the antidepressant dibenzazepine drug, such as protriptyline.