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Benzodiazepines (BZD, BDZ, BZs), colloquially known as " benzos ", are a class of depressant drugs whose core chemical structure is the fusion of a benzene ring and a diazepine ring. They are prescribed to treat conditions such as anxiety disorders, insomnia, and seizures. The first benzodiazepine, chlordiazepoxide (Librium), was discovered ...
Chlordiazepoxide (initially called methaminodiazepoxide) was the first benzodiazepine to be synthesized in the mid-1950s. The synthesis was derived from work on a class of dyes, quinazoline-3-oxides. [33] It was discovered by accident when in 1957 tests revealed that the compound had hypnotic, anxiolytic, and muscle relaxant effects.
Nationality. Polish, American. Alma mater. Jagiellonian University. Occupation. Chemist. Known for. first synthesizing benzodiazepines. Leo Sternbach (May 7, 1908 – September 28, 2005) was a Polish American chemist who is credited with first synthesizing benzodiazepines, the main class of tranquilizers.
Benzodiazepines developed in the former Soviet Union (e.g. phenazepam, gidazepam etc.) Benzodiazepines predominantly used only in Japan (e.g. nimetazepam, flutoprazepam etc.) 4,5-cyclised benzodiazepines (e.g. ketazolam, cloxazolam etc.), and other compounds not researched by Roche.
Diazepam, sold under the brand name Valium among others, is a medicine of the benzodiazepine family that acts as an anxiolytic. [ 14 ] It is used to treat a range of conditions, including anxiety, seizures, alcohol withdrawal syndrome, muscle spasms, insomnia, and restless legs syndrome. [ 14 ]
In 1832 produced chloral hydrate, the first synthetic sleeping drug. In 1833 French chemist Anselme Payen was the first to discover an enzyme, diastase. In 1834, François Mothes and Joseph Dublanc created a method to produce a single-piece gelatin capsule that was sealed with a drop of gelatin solution.
The first tricyclic antidepressant (TCA), imipramine was discovered. 1958. Aaron B. Lerner et al. of Yale University isolated the hormone melatonin, which was found to regulate the circadian rhythm. 1960s. Aaron T. Beck developed cognitive therapy. 1960. The first benzodiazepine, chlordiazepoxide, under the trade name Librium was introduced. 1961
Lorazepam, sold under the brand name Ativan among others, is a benzodiazepine medication. [14] It is used to treat anxiety (including anxiety disorders), trouble sleeping, severe agitation, active seizures including status epilepticus, alcohol withdrawal, and chemotherapy-induced nausea and vomiting. [14]