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Ephedrine works by inducing the release of norepinephrine and hence indirectly activating the α-and β-adrenergic receptors. [11] Chemically, ephedrine is a substituted amphetamine and is the (1R,2S)-enantiomer of β-hydroxy-N-methylamphetamine. [14] Ephedrine was first isolated in 1885 and came into commercial use in 1926.
Conversely, ephedrine is the enantiopure (1R,2S)-enantiomer. [1] Racephedrine has been marketed for medical use in Italy . [ 1 ] Like ephedrine, racephedrine is a releasing agent of norepinephrine and to a much lesser extent of dopamine .
Diagnostic impurities are the naphthalenes 1-benzyl-methylnaphthalene and 1,3-dimethyl-2-phenylnaphthalene, [108] arising in the Nagai and Leuckart routes, and cis-or trans-1,2-dimethyl-3-phenylaziridine, ephedrine, or erythro-3,4-dimethyl- 5-phenyloxazolidine, arising in the Nagai and Emde routes; these are absent in the reductive amination ...
[6] [1] It is the 4-fluoro analogue of ephedrine. [6] [1] The synthesis of 4-fluoroephedrine has been described. [7] It can serve as a precursor in the synthesis of 4-fluoromethamphetamine (4-FMA). [3] The predicted log P of 4-fluoroephedrine is 1.0. [6] For comparison, the predicted log P of ephedrine is 0.9. [8]
Some β-hydroxyamphetamines have had their side chain extended and cyclized.Examples include certain substituted phenylmorpholines like phenmetrazine and phendimetrazine and their analogues; substituted phenylmorpholines related to bupropion like radafaxine (cyclized (2S,3S)-hydroxybupropion) and manifaxine; certain substituted aminorexes like 4-methylaminorex and 4,4'-dimethylaminorex; and ...
The members of this genus have alkaloid ephedrine which are integral in the treatment of asthma and other related respiratory issues. By using the entire plant and not just the stem it has been observed, as compared to isolated ephedrine, to have few side effects. This is used to treat symptoms not cure respiratory issues.
The Ephedra alkaloids, ephedrine and pseudoephedrine – constituents of E. sinica and other members of the genus – have sympathomimetic and decongestant qualities, [22] and have been used as dietary supplements, mainly for weight loss. [23] The drug ephedrine is used to prevent low blood pressure during spinal anesthesia. [22]
Bottle of ephedrine, an alkaloid found in ephedra. Ephedra is a medicinal preparation from the plant Ephedra sinica. [1] Several additional species belonging to the genus Ephedra have traditionally been used for a variety of medicinal purposes, and are a possible candidate for the soma plant of Indo-Iranian religion. [2]