Legal status
Legal status
  • 2-phenyl-5,5-dimethylmorpholine
CAS Number
PubChem CID
CompTox Dashboard (EPA)
Chemical and physical data
Molar mass191.274 g·mol−1
3D model (JSmol)
  • CC1(C)NCC(OC1)C2=CC=CC=C2
  • InChI=1S/C12H17NO/c1-12(2)9-14-11(8-13-12)10-6-4-3-5-7-10/h3-7,11,13H,8-9H2,1-2H3

G-130 (GP-130, 2-Phenyl-5,5-dimethyltetrahydro-1,4-oxazine)[1] is a drug with stimulant and anorectic effects, related to phenmetrazine.[2][3][4]

Structural analogs

Compounds related to G-130 and radafaxine were synthesized that behave as combined inhibitors of monoamine uptake and nicotinic acetylcholine receptors.[5]


Patent:[1] Spanish Fepradinol patent:[6]

Ex 1: 2 moles of 2-methyl-2-aminopropanol (aminomethyl propanol) (1) is reacted with 1 moles of styrene oxide (phenyloxirane) [96-09-3] (2) in 0.2 mole water.

Ex 2: Fepradinol [36981-91-6] [63075-47-8] (3) is treated with acid, to cyclize to the morpholine ring.

See also


  1. ^ a b GB 1336732, "Diethanolamine derivatives", published 1973-11-07, assigned to Instituto Gentili SPA 
  2. ^ Fanelli O (June 1973). "Pharmacological and toxicological study of a new psychotropic stimulant: the 2-phenyl-5-dimethyl-tetrahydro-1,4-oxazine, in comparison with d,l-amphetamine, phenmetrazine and pemoline-Mg". Arzneimittel-Forschung. 23 (6): 810–816. PMID 4740767.
  3. ^ Fanelli O, Mazzoncini V, Ferri S (October 1974). "Toxicological and teratological study of 2-phenyl-5,5-dimethyl-tetrahydro-1,4-oxazine hydrochloride (G 130), a psychostimulant drug". Arzneimittel-Forschung. 24 (10): 1627–1632. PMID 4479774.
  4. ^ Fanelli O, Mazzoncini V, Trallori L (December 1974). "Antagonism of psychostimulant 2-phenyl-5,5-dimethyl-tetrahydro-1,4-oxazine hydrochloride (G 130) to central nervous system depressing drugs. Monoamine oxidase inhibitory activity and norepinephrine and serotonin induced changes. Comparison with dL-amphetamine". Arzneimittel-Forschung. 24 (12): 2025–2029. PMID 4480283.
  5. ^ Carroll FI, Muresan AZ, Blough BE, Navarro HA, Mascarella SW, Eaton JB, et al. (March 2011). "Synthesis of 2-(substituted phenyl)-3,5,5-trimethylmorpholine analogues and their effects on monoamine uptake, nicotinic acetylcholine receptor function, and behavioral effects of nicotine". Journal of Medicinal Chemistry. 54 (5): 1441–1448. doi:10.1021/jm1014555. PMC 3048909. PMID 21319801.
  6. ^ ES508287 (application number) idem ES 8300676  (1983 to Elmu Sa).