Naloxol

Naloxol is an opioid antagonist closely related to naloxone. It exists in two isomeric forms, α-naloxol and β-naloxol.

Naloxol

α-naloxol α-naloxol β-naloxol β-naloxol
Names
IUPAC names α-naloxol: (4R,4aS,7S,7aR,12bS)-3-allyl-2,3,4,4a,5,6,7,7a-octahydro-1H-4,12-methanobenzofuro[3,2-e]isoquinoline-4a,7,9-triol β-naloxol: (4R,4aS,7R,7aR,12bS)-3-allyl-2,3,4,4a,5,6,7,7a-octahydro-1H-4,12-methanobenzofuro[3,2-e]isoquinoline-4a,7,9-triol
Identifiers
CAS Number	20410-95-1 (α)^Y 53154-12-4 (β)^Y 58691-01-3 (α/β)^Y
3D model (JSmol)	(α): Interactive image (β): Interactive image
ChemSpider	4590928 (α)^N 9177198 (β)^N
ECHA InfoCard	100.236.696
PubChem CID	5492271 (α) 5492293 (β)
UNII	FLW43Q2H9L (α)^Y QY92ZV4EHS (β)^Y K2SIX47W55 (α/β)^Y
CompTox Dashboard (EPA)	DTXSID20942579
InChI InChI=1S/C19H23NO4/c1-2-8-20-9-7-18-15-11-3-4-12(21)16(15)24-17(18)13(22)5-6-19(18,23)14(20)10-11/h2-4,13-14,17,21-23H,1,5-10H2/t13-,14+,17-,18-,19+/m0/s1^N Key: HMWHERQFMBEHNG-AQQQZIQISA-N^N (α): InChI=1/C19H23NO4/c1-2-8-20-9-7-18-15-11-3-4-12(21)16(15)24-17(18)13(22)5-6-19(18,23)14(20)10-11/h2-4,13-14,17,21-23H,1,5-10H2/t13-,14+,17-,18-,19+/m0/s1 Key: HMWHERQFMBEHNG-AQQQZIQIBS (β): InChI=1/C19H23NO4/c1-2-8-20-9-7-18-15-11-3-4-12(21)16(15)24-17(18)13(22)5-6-19(18,23)14(20)10-11/h2-4,13-14,17,21-23H,1,5-10H2/t13-,14-,17+,18+,19-/m1/s1 Key: HMWHERQFMBEHNG-CSJNCLCHBP (β): InChI=1S/C19H23NO4/c1-2-8-20-9-7-18-15-11-3-4-12(21)16(15)24-17(18)13(22)5-6-19(18,23)14(20)10-11/h2-4,13-14,17,21-23H,1,5-10H2/t13-,14-,17+,18+,19-/m1/s1 Key: HMWHERQFMBEHNG-CSJNCLCHSA-N
SMILES (α): OC1=C2C3=C(C=C1)C[C@@H]4[C@]5(O)CC[C@H](O)[C@H](O2)[C@@]53CCN4CC=C (β): OC1=C2C3=C(C=C1)C[C@@H]4[C@]5(O)CC[C@@H](O)[C@H](O2)[C@@]53CCN4CC=C
Properties
Chemical formula	C19H23NO4
Molar mass	329.396 g·mol^−1
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
N verify (what is ^YN ?)
Infobox references

α-naloxol is a human metabolite of naloxone.[1] Synthetically, α-naloxol can be prepared from naloxone by reduction of the ketone group, and β-naloxol can be prepared from α-naloxol by a Mitsunobu reaction.[2]

Naloxol can be said to be the oxymorphol analogue of naloxone.

See also

• Naloxegol

References

1. Weinstein, S. H.; Pfeffer, M.; Schor, J. M.; Indindoli, L.; Mintz, M. (1971). "Metabolites of naloxone in human urine". Journal of Pharmaceutical Sciences. 60 (10): 1567–1568. doi:10.1002/jps.2600601030. PMID 5129377.
2. Simon, C (1994). "Stereoselective synthesis of β-naltrexol, β-naloxol β-naloxamine, β-naltrexamine and related compounds by the application of the mitsunobu reac". Tetrahedron. 50 (32): 9757. doi:10.1016/S0040-4020(01)85541-1.