Chemistry:Phenbenzamine

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Short description: Chemical compound
Phenbenzamine
Phenbenzamine.svg
Clinical data
Trade namesAntergan
Other namesRP-2339
Drug classAntihistamine; H1 receptor antagonist
Identifiers
CAS Number
PubChem CID
ChemSpider
UNII
Chemical and physical data
FormulaC17H22N2
Molar mass254.377 g·mol−1
3D model (JSmol)

Phenbenzamine, sold under the brand name Antergan and known by the former developmental code name RP-2339, is an antihistamine of the ethylenediamine class which also has anticholinergic properties.[1][2] It was introduced in 1941 or 1942 and was the first antihistamine to be introduced for medical use.[3][4][5] Soon following its introduction, phenbenzamine was replaced by another antihistamine of the same class known as mepyramine (pyrilamine; Neoantergan).[5][6] Following this, other antihistamines, such as diphenhydramine, promethazine, and tripelennamine, were developed and introduced.[5][7] Owing to their sedative effects, phenbenzamine and promethazine were assessed in the treatment of manic depression in France in the 1940s and were regarded as promising therapies for such purposes.[3] Whereas phenbenzamine was the first clinically useful antihistamine, piperoxan was the first compound with antihistamine properties to be discovered and was synthesized in the early 1930s.[7]

Chemistry

Synthesis

Phenbenzamine can be prepared by the reaction of N-benzylaniline with 2-chloroethyldimethylamine.[8][9]

Phenbenzamine synthesis

References

  1. "Phenbenzamine". Encyclopædia Britannica. http://www.britannica.com/EBchecked/topic/455484/phenbenzamine. 
  2. "Chloropromazine". Drug Discovery: A Casebook and Analysis. Springer Science & Business Media. 6 December 2012. pp. 113–. ISBN 978-1-4612-0469-5. https://books.google.com/books?id=35TzBwAAQBAJ&pg=PA113. 
  3. 3.0 3.1 Moncrieff, Joanna (2013). "Chlorpromazine: The First Wonder Drug". The Bitterest Pills. Palgrave Macmillan UK. pp. 20–38. doi:10.1057/9781137277442_2. ISBN 978-1-137-27743-5. 
  4. "Chapter 29: Estrogen, Progestins, and Androgens". Foye's Principles of Medicinal Chemistry. Lippincott Williams & Wilkins. 2002. pp. 799–. ISBN 978-0-683-30737-5. https://books.google.com/books?id=qLJ6Bs1Qml4C&pg=PA799. 
  5. 5.0 5.1 5.2 Gastrointestinal Physiology: Development, Principles and Mechanisms of Regulation. Springer. 20 June 2018. pp. 827–. ISBN 978-3-319-91056-7. https://books.google.com/books?id=UyVhDwAAQBAJ&pg=PA827. 
  6. "Developing the Perfect Antihistamine for use in Allergic Conditions: A Voyage in H1 Selectivity". Frontiers in Clinical Drug Research - Anti-Allergy Agents. Bentham Science Publishers. 11 July 2018. pp. 29–. ISBN 978-1-68108-337-7. https://books.google.com/books?id=EIJoDwAAQBAJ&pg=PA29. 
  7. 7.0 7.1 Pharmaceutical Innovation: Revolutionizing Human Health. Chemical Heritage Foundation. 1999. pp. 230–231. ISBN 978-0-941901-21-5. https://books.google.com/books?id=IH4lPs6S1bMC&pg=PA230. 
  8. Kyrides LP, Zienty FB, "Process of preparing a monobasic salt of a secondary amine", US patent 2634293, issued 7 April 1953, assigned to Monsanto Chemicals
  9. "A Novel N-Alkylation Reaction". Journal of the American Chemical Society 75 (3): 744–745. 1953. doi:10.1021/ja01099a508. 

category:Diamines