Benperidol
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Benperidol, sold under the trade name Anquil among others, is a
typical antipsychotic Typical antipsychotics (also known as major tranquilizers, and first generation antipsychotics) are a class of antipsychotic drugs first developed in the 1950s and used to treat psychosis (in particular, schizophrenia). Typical antipsychotics ma ...
primarily used to treat
hypersexuality Hypersexuality is extremely frequent or suddenly increased libido. It is controversial whether it should be included as a clinical diagnosis used by mental healthcare professionals. Nymphomania and satyriasis were terms previously used for the c ...
syndromes and can be used to treat
schizophrenia Schizophrenia is a mental disorder characterized by continuous or relapsing episodes of psychosis. Major symptoms include hallucinations (typically hearing voices), delusions, and disorganized thinking. Other symptoms include social wit ...
. It is a highly potent
butyrophenone Butyrophenone is an organic compound with the formula C6H5C(O)C3H7. It is a colorless liquid. The butyrophenone structure—a ketone flanked by a phenyl ring and a butyl chain—forms the basis for many other chemicals containing various sub ...
derivative and is the most potent neuroleptic on the European market, with
chlorpromazine Chlorpromazine (CPZ), marketed under the brand names Thorazine and Largactil among others, is an antipsychotic medication. It is primarily used to treat psychotic disorders such as schizophrenia. Other uses include the treatment of bipolar di ...
equivalency as high as 75 to 100 (about 150 to 200% the potency, per dose, of
haloperidol Haloperidol, sold under the brand name Haldol among others, is a typical antipsychotic medication. Haloperidol is used in the treatment of schizophrenia, tics in Tourette syndrome, mania in bipolar disorder, delirium, agitation, acute psychosi ...
). It is sometimes prescribed to
sex offender A sex offender (sexual offender, sex abuser, or sexual abuser) is a person who has committed a sex crime. What constitutes a sex crime differs by culture and legal jurisdiction. The majority of convicted sex offenders have convictions for crim ...
s as a condition of their
parole Parole (also known as provisional release or supervised release) is a form of early release of a prison inmate where the prisoner agrees to abide by certain behavioral conditions, including checking-in with their designated parole officers, or ...
, as an alternative to
anti-androgen Antiandrogens, also known as androgen antagonists or testosterone blockers, are a class of drugs that prevent androgens like testosterone and dihydrotestosterone (DHT) from mediating their biological effects in the body. They act by blocking the ...
drugs such as
cyproterone acetate Cyproterone acetate (CPA), sold alone under the brand name Androcur or with ethinylestradiol under the brand names Diane or Diane-35 among others, is an antiandrogen and progestin medication used in the treatment of androgen-dependent condition ...
. Benperidol was discovered by
Janssen Pharmaceutica Janssen Pharmaceuticals is a pharmaceutical company headquartered in Beerse, Belgium, and wholly-owned by Johnson & Johnson. It was founded in 1953 by Paul Janssen. In 1961, Janssen Pharmaceuticals was purchased by New Jersey-based American ...
in 1961 and has been marketed since 1966. It is mainly used in
Germany Germany,, officially the Federal Republic of Germany, is a country in Central Europe. It is the second most populous country in Europe after Russia, and the most populous member state of the European Union. Germany is situated betwe ...
, but it is also available in
Belgium Belgium, ; french: Belgique ; german: Belgien officially the Kingdom of Belgium, is a country in Northwestern Europe. The country is bordered by the Netherlands to the north, Germany to the east, Luxembourg to the southeast, France to th ...
,
Greece Greece,, or , romanized: ', officially the Hellenic Republic, is a country in Southeast Europe. It is situated on the southern tip of the Balkans, and is located at the crossroads of Europe, Asia, and Africa. Greece shares land borders ...
,
Italy Italy ( it, Italia ), officially the Italian Republic, ) or the Republic of Italy, is a country in Southern Europe. It is located in the middle of the Mediterranean Sea, and its territory largely coincides with the homonymous geographical ...
, the
Netherlands ) , anthem = ( en, "William of Nassau") , image_map = , map_caption = , subdivision_type = Sovereign state , subdivision_name = Kingdom of the Netherlands , established_title = Before independence , established_date = Spanish Netherl ...
, and the
United Kingdom The United Kingdom of Great Britain and Northern Ireland, commonly known as the United Kingdom (UK) or Britain, is a country in Europe, off the north-western coast of the European mainland, continental mainland. It comprises England, Scotlan ...
.


Pharmacology


Pharmacodynamics

Benperidol is a strong dopamine receptor antagonist ( D2 (''K''i 0.027 nM) and D4 (''K''i 0.066 nM)) with weaker serotonin receptor antagonism ( 5-HT2A (''K''i 3.75 nM)). In high doses, it has antihistaminergic and alpha-adrenergic properties. It possesses minimal anticholinergic properties.


Pharmacokinetics

Benperidol is absorbed well and undergoes extensive
first pass metabolism The first pass effect (also known as first-pass metabolism or presystemic metabolism) is a phenomenon of drug metabolism whereby the concentration of a drug, specifically when administered orally, is greatly reduced before it reaches the system ...
. One percent of benperidol is excreted in urine. The half-life of benperidol is 8 hours.


Synthesis

4-(2-Keto-1-benzimidazolinyl)piperidine 0662-53-7(1) is alkylated with 4-Chloro-4'-Fluorobutyrophenone 874-54-2(2).


See also

* Timiperone has a similar
chemical structure A chemical structure determination includes a chemist's specifying the molecular geometry and, when feasible and necessary, the electronic structure of the target molecule or other solid. Molecular geometry refers to the spatial arrangement of ...
with a
thiourea Thiourea () is an organosulfur compound with the formula and the structure . It is structurally similar to urea (), except that the oxygen atom is replaced by a sulfur atom (as implied by the ''thio-'' prefix); however, the properties of urea a ...
group A group is a number of persons or things that are located, gathered, or classed together. Groups of people * Cultural group, a group whose members share the same cultural identity * Ethnic group, a group whose members share the same ethnic ide ...
instead of a
urea Urea, also known as carbamide, is an organic compound with chemical formula . This amide has two amino groups (–) joined by a carbonyl functional group (–C(=O)–). It is thus the simplest amide of carbamic acid. Urea serves an important ...
group. *
Pimozide Pimozide (sold under the brand name Orap) is an antipsychotic drug of the diphenylbutylpiperidine class. It was discovered at Janssen Pharmaceutica in 1963. It has a high potency compared to chlorpromazine (ratio 50-70:1). On a weight basis ...
&
Bezitramide Bezitramide is an opioid analgesic. Bezitramide itself is a prodrug which is readily hydrolyzed in the gastrointestinal tract to its active metabolite, despropionyl-bezitramide. Bezitramide was discovered at Janssen Pharmaceutica in 1961. It is m ...
(& Oxiperomide & Neflumozide) are also made from 4-(1-Benzimidazolinone)piperidine precursor *
Droperidol Droperidol (Inapsine, Droleptan, Dridol, Xomolix, Innovar ombination with fentanyl">fentanyl.html" ;"title="ombination with fentanyl">ombination with fentanyl is an antidopaminergic medication, drug used as an antiemetic (that is, to prevent o ...
is similar, but has a tetrahydropyridine ring.


References

{{Dopaminergics Belgian inventions Benzimidazoles Butyrophenone antipsychotics Janssen Pharmaceutica Fluoroarenes Piperidines Typical antipsychotics