Etafedrine

From Self-sufficiency
Jump to: navigation, search
Etafedrine
File:Etafedrine Structural Formulae (1R,2S).png
Systematic (IUPAC) name
(1R,2S)-N-ethyl-N-methyl-2-amino-1-phenylpropan-1-ol
Identifiers
CAS Number 7681-79-0
ATC code none
PubChem CID 10734
Chemical data
Formula C12H19NO
Molar mass 193.285 g/mol[[Script error: No such module "String".]]
Script error: No such module "TemplatePar".Expression error: Unexpected < operator.

Etafedrine (INN) or ethylephedrine is a long-acting bronchodilator and has the brand name Nethaprin. It was previously commercially available as both the free base and as the hydrochloride salt from Sanofi-Aventis but is now no longer marketed.

Pharmacology

Unlike ephedrine and tyramine, etafedrine does not induce the release of epinephrine or norepinephrine and instead acts as a selective β-adrenergic receptor agonist, thereby mediating its bronchodilator effects.[1]

Synthesis

Although there are four possible stereoisomers of ethylephedrine, the pharmacological agent is the (1R, 2S) form. This isomer may be synthesized by alkylating naturally-occurring ephedrine with ethyl iodide. The hydrochloride may be prepared by passing hydrogen chloride through a solution of ethylephedrine in diethyl ether:[2]

450px

See also

References

Cite error: Invalid <references> tag; parameter "group" is allowed only.

Use <references />, or <references group="..." />



  1. Lindmar R, Löffelholz K, Stieh-Koch U (1985). "On the mechanism of bronchodilatation by etafedrine". Arzneimittel-Forschung. 35 (3): 602–4. PMID 4039586. 
  2. Takeo Ueda,Shigeshi Toyoshima,Kiyoshi Takahashi and Masako Muraoka (1955). "Studies on Syntheses and Pharmacological Effects of N-Alkylephedrines and their Ammonium Salt Derivatives" (Free full text). Pharm. Bull. (Japan). 3 (6): 465–468.