Tiflorex

Tiflorex, formerly known as flutiorex, is a stimulant amphetamine. Its most pronounced effect is in suppression of appetite; it has little effect on pulse rate, sleep, or mood.[1] It was found to be twice as potent an anorectic as fenfluramine.[2]

Tiflorex
Clinical data
ATC code
  • none
Identifiers
IUPAC name
  • (RS)-N-ethyl-1-{3-[(trifluoromethyl)thio]phenyl}propan-2-amine
CAS Number
PubChem CID
ChemSpider
UNII
Chemical and physical data
FormulaC12H16F3NS
Molar mass263.32 g·mol−1
3D model (JSmol)
ChiralityRacemic mixture
SMILES
  • CCNC(C)Cc1cccc(c1)SC(F)(F)F
InChI
  • InChI=1S/C12H16F3NS/c1-3-16-9(2)7-10-5-4-6-11(8-10)17-12(13,14)15/h4-6,8-9,16H,3,7H2,1-2H3 N
  • Key:HNONSDNCRNUTCT-UHFFFAOYSA-N N
 NY (what is this?)  (verify)

SL 72.340-d was cited to be 4x the anorectant potency of fenfluramine (ED50=1.4 mg/kg vs 5.6 mg/kg).[3]

Synthesis

Patent:[4]

The Rosenmund reduction of 3-(trifluoromethylthio)benzoyl chloride [51748-28-8] (1) gave 3-((trifluoromethyl)thio)benzaldehyde [51748-27-7] (2). Henry reaction with nitroethane led to 1-(2-nitroprop-1-en-1-yl)-3-[(trifluoromethyl)sulfanyl]benzene [176242-84-5] (3). With the aid of iron catalyst in concentrated HCl acid there occurred FGI into 1-(3'-trifluoromethylthiophenyl)-2-propanone, CID:21325269 (4'). Reductive amination with ethylamine and formic acid as the reductant completed the synthesis of tiflorex (5).

References

  1. Silverstone T, Fincham J, Plumley J (April 1979). "An evaluation of the anorectic activity in man of a sustained release formulation of tiflorex". British Journal of Clinical Pharmacology. 7 (4): 353–6. doi:10.1111/j.1365-2125.1979.tb00945.x. PMC 1429648. PMID 444355.
  2. Giudicelli JF, Richer C, Berdeaux A (February 1976). "Preliminary assessment of flutiorex, a new anorectic drug, in man". British Journal of Clinical Pharmacology. 3 (1): 113–21. doi:10.1111/j.1365-2125.1976.tb00578.x. PMC 1428817. PMID 788737.
  3. Stuart S (2013-09-11). Abstracts: Sixth International Congress of Pharmacology. ISBN 9781483152530.
  4. Don P. R. L. Giudicelli & Henry Najer, U.S. Patent 4,148,923 (1979 to Synthelabo SA).
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