Aminorex (Menocil , Apiquel , aminoxaphen , aminoxafen , McN-742 ) is a weight loss (anorectic ) stimulant drug . It was withdrawn from the market after it was found to cause pulmonary hypertension .[1] In the U.S., it is an illegal Schedule I drug, with no medical use and poor safety profile.
Aminorex, in the 2-amino -5-aryl oxazoline class, was developed by McNeil in 1962.[2] It is closely related to 4-methylaminorex . Aminorex has been shown to have locomotor stimulant effects, lying midway between dextroamphetamine and methamphetamine . Aminorex effects have been attributed to the release of catecholamines .[3]
History [ edit ]
It was discovered in 1962 by Edward John Hurlburt (U.S. Patent 3,115,494 ), and was quickly found in 1963 to have an anorectic effect in rats . It was introduced as a prescription appetite suppressant in Germany , Switzerland and Austria in 1965, but was withdrawn in 1972 after it was found to cause pulmonary hypertension in approximately 0.2% of patients, and was linked to a number of deaths.[3] [4]
Synthesis [ edit ]
The synthesis was first reported in a structure-activity relationship study of 2-amino-5-aryl-2-oxazolines, where aminorex was found to be approximately 2.5 times more potent than D -amphetamine sulfate in inducing anorexia in rats, and was also reported to have CNS stimulant effects.
The racemic synthesis involves addition/cyclization reaction of 2-amino-1-phenylethanol with cyanogen bromide .[5] A similar synthesis has been also published.[6]
See also [ edit ]
References [ edit ]
^ Gaine SP, Rubin LJ, Kmetzo JJ, Palevsky HI, Traill TA (November 2000). "Recreational use of aminorex and pulmonary hypertension" . Chest . 118 (5): 1496–7. doi :10.1378/chest.118.5.1496 . PMID 11083709 .
^ US Patent 3161650 - 2-Amino-5-Aryloxazoline Products
^ a b Fishman AP. (Jan 1991). "Aminorex to fen/phen - An epidemic foretold". Circulation . 99 (1): 156–161. doi :10.1161/01.CIR.99.1.156 . ISSN 0009-7322 . PMID 9884392 .
^ Weigle, DS (June 2003). "Pharmacological therapy of obesity: past, present, and future.". The Journal of clinical endocrinology and metabolism . 88 (6): 2462–9. doi :10.1210/jc.2003-030151 . PMID 12788841 .
^ Poos GI, Carson JR, Rosenau JD, Roszowski AP, Kelley NM, McGowin J (May 1963). "2-Amino-5-aryl-2-oxazolines. Potent New Anorectic Agents.". Journal of Medicinal Chemistry . 6 (3): 266–272. doi :10.1021/jm00339a011 . PMID 14185981 .
^ Ueda S, Terauchi H, Yano A, Ido M, Matsumoto M, Kawasaki M (Jan 2004). "4,5-Disubstituted-1,3-oxazolidin-2-imine derivatives: a new class of orally bioavailable nitric oxide synthase inhibitor.". Bioorg. Med. Chem. Lett . 14 (2): 313–316. doi :10.1016/j.bmcl.2003.11.010 . PMID 14698148 .
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