Nalmexone

Nalmexone
Systematic (IUPAC) name
	(5α)-3,14-dihydroxy-17-(3-methyl-2-buten-1-yl)-4,5-epoxymorphinan-6-one
Identifiers
CAS Number	16676-26-9; 16291-05-7 (HCl)
ATC code	None
PubChem	CID 5360516
ChemSpider	4514525
Chemical data
Formula	C21H25NO4
Molar mass	355.428 g/mol
3D model (Jmol)	Interactive image
	SMILES O=C4[C@@H]5Oc1c2c(ccc1O)C[C@H]3N(CC[C@]25[C@@]3(O)CC4)C\C=C(/C)C ;
	InChI InChI=1S/C21H25NO4/c1-12(2)6-9-22-10-8-20-17-13-3-4-14(23)18(17)26-19(20)15(24)5-7-21(20,25)16(22)11-13/h3-4,6,16,19,23,25H,5,7-11H2,1-2H3/t16-,19+,20+,21-/m1/s1 ; Key:OHKCLOQPSLQCQR-MBPVOVBZSA-N ;

Nalmexone (INN) (code names EN-1620A, UM-592), or nalmexone hydrochloride (USAN), is a semisynthetic, opioid partial agonist or mixed agonist-antagonist with both analgesic and narcotic antagonist properties that was never marketed.^[1]^[2]^[3]^[4] In clinical studies it was found to have comparable analgesic efficacy to morphine, though with several-fold reduced potency.^[5] In addition, nalmexone's side effects, the most common of which were sleepiness and sweating, were reported to be similar to those of morphine, albeit with a noticeably higher degree of incidence.^[5]

Synthesis[edit]

Nalmexone synthesis: Lowenstein, M. J.; Fishman, J.; 1967, U.S. Patent 3,320,262

References[edit]

^ Macdonald F (1997). Dictionary of Pharmacological Agents. CRC Press. p. 1395. ISBN 978-0-412-46630-4. Retrieved 11 May 2012.
^ Casy AF, Parfitt RT (1986). Opioid Analgesics: Chemistry and Receptors. Springer. p. 55. ISBN 978-0-306-42130-3. Retrieved 11 May 2012.
^ Loew GH, Berkowitz DS (1978). "Quantum chemical studies of N-substituent variation in the oxymorphone series of opiate narcotics". Journal of Medicinal Chemistry. 21 (1): 101–106. doi:10.1021/jm00199a018. PMID 73588.
^ Forrest WH, Shroff PF, Mahler DL (1972). "Analgesic and other effects of nalmexone in man". Clinical Pharmacology and Therapeutics. 13 (4): 520–525. PMID 4557582.
^ ^a ^b National Research Council (U.S.). Committee on Problems of Drug Dependence; American Medical Association. Committee on Alcoholism and Drug Dependence; American Medical Association. Council on Mental Health; National Academy of Sciences (U.S.) (1969). Bulletin, problems of drug dependence. National Academies. p. 5873. NAP:10503. Retrieved 11 May 2012. Cite uses deprecated parameter |coauthors= (help)

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[Macdonald1997-1] Macdonald F (1997). Dictionary of Pharmacological Agents. CRC Press. p. 1395. ISBN 978-0-412-46630-4. Retrieved 11 May 2012.

[CasyParfitt1986-2] Casy AF, Parfitt RT (1986). Opioid Analgesics: Chemistry and Receptors. Springer. p. 55. ISBN 978-0-306-42130-3. Retrieved 11 May 2012.

[pmid73588-3] Loew GH, Berkowitz DS (1978). "Quantum chemical studies of N-substituent variation in the oxymorphone series of opiate narcotics". Journal of Medicinal Chemistry. 21 (1): 101–106. doi:10.1021/jm00199a018. PMID 73588.

[pmid4557582-4] Forrest WH, Shroff PF, Mahler DL (1972). "Analgesic and other effects of nalmexone in man". Clinical Pharmacology and Therapeutics. 13 (4): 520–525. PMID 4557582.

[DependenceDependence1969-5] National Research Council (U.S.). Committee on Problems of Drug Dependence; American Medical Association. Committee on Alcoholism and Drug Dependence; American Medical Association. Council on Mental Health; National Academy of Sciences (U.S.) (1969). Bulletin, problems of drug dependence. National Academies. p. 5873. NAP:10503. Retrieved 11 May 2012. Cite uses deprecated parameter |coauthors= (help)

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v t e Opioid receptor modulators

MOR	Agonists (abridged; see here for a full list): 7-Acetoxymitragynine 7-Hydroxymitragynine ψ-Akuammigine α-Chlornaltrexamine α-Narcotine Acetyldihydrocodeine Acetylfentanyl Acrylfentanyl Adrenorphin (metorphamide) AH-7921 Akuammicine Akuammidine Alfentanil Anileridine Apparicine β-Endorphin BAM-12P BAM-18P BAM-22P Benzhydrocodone Benzylmorphine Bezitramide Biphalin BU08070 Buprenorphine Butorphan Butorphanol Butyrfentanyl BW-373U86 Carfentanil Casokefamide Cebranopadol Chloroxymorphamine Codeine DADLE DAMGO (DAGO) Dermorphin Desomorphine Dextromoramide Dextropropoxyphene (propoxyphene) Dezocine Dimenoxadol Dimethylaminopivalophenone Eluxadoline Diamorphine (heroin) Dihydrocodeine Dihydroetorphine Dihydromorphine Diphenoxylate Dipipanone Dynorphin A Embutramide Endomorphin-1 Endomorphin-2 Eseroline Ethylmorphine Etorphine Fentanyl Fluorophen Frakefamide Furanylfentanyl Hemorphin-4 Herkinorin Hodgkinsine Hydrocodone Hydromorphinol Hydromorphone IBNtxA Ketamine Ketobemidone Kratom Laudanosine Lefetamine Leu-enkephalin Levacetylmethadol Levomethorphan Levorphanol Lexanopadol Loperamide Matrine Meptazinol Met-enkephalin (metenkefalin) Methadone Metkefamide Metopon Mitragynine Mitragynine pseudoindoxyl Morphiceptin Morphine Nalbuphine Nalbuphine sebacate NalBzOH Nalmexone Naltalimide Neopine Nicocodeine Nicodicodeine Nicomorphine NKTR-181 Norketamine O-Desmethyltramadol Octreotide Oliceridine OM-3-MNZ Oripavine Oxycodone Oxymorphazone Oxymorphonazine Oxymorphone Oxymorphone phenylhydrazone OxyPNPH Papaver somniferum (opium) Pentazocine Pericine Pethidine (meperidine) Phenazocine Phencyclidine Piminodine Piritramide PL-017 Prodine Propiram PZM21 Racemethorphan Racemorphan Remifentanil Salsolinol Sinomenine Sufentanil Tapentadol Tetrahydropapaveroline TH-030418 Thebaine Thienorphine Tianeptine Tilidine Tramadol Trimebutine TRIMU 5 TRV734 Tubotaiwine U-47700 Valorphin Viminol Xorphanol PAMs: BMS-986121 BMS-986122 Antagonists: (3S,4S)-Picenadol 2-(S)-N,N-(R)-Viminol 4-Caffeoyl-1,5-quinide 4′-Hydroxyflavanone 4',7-Dihydroxyflavone 6β-Naltrexol 6β-Naltrexol-d4 18-MC α-Gliadin β-Chlornaltrexamine β-Funaltrexamine Akuammine Alvimopan AM-251 Apigenin AT-076 Axelopran Bevenopran Catechin Catechin gallate Clocinnamox CTAP CTOP Cyclofoxy Cyprodime Diacetylnalorphine Diprenorphine ECG EGC Epicatechin Eptazocine Gemazocine Ginsenoside R Hyperoside Ibogaine Levallorphan Lobeline LY-255582 LY-2196044 Methocinnamox Methylnaltrexone Methylsamidorphan chloride Naldemedine Nalmefene Nalodeine (N-allylnorcodeine) Nalorphine Nalorphine dinicotinate Naloxazone Naloxegol Naloxol Naloxonazine Naloxone Naltrexazone Naltrexonazine Naltrexone Naltrindole Naringenin Noribogaine Oxilorphan Pawhuskin A Rimonabant Quadazocine Samidorphan Taxifolin Unknown/unsorted: Cannabidiol Coronaridine Cyproterone acetate Dihydroakuuamine Tabernanthine Tetrahydrocannabinol

DOR	Agonists: 6'-GNTI 7-SIOM ADL-5747 (PF-04856881) ADL-5859 Amoxapine AR-M100390 (ARM390) AZD2327 β-Endorphin BAM-18P Biphalin BU-48 Butorphan Butorphanol BW-373U86 Casokefamide Cebranopadol Codeine Cyclazocine DADLE Deltorphin A Deltorphin I Deltorphin II Desmethylclozapine Dezocine Diamorphine (heroin) Dihydroetorphine Dihydromorphine DPDPE DPI-221 DPI-3290 DSLET Ethylketazocine Etorphine Fentanyl FIT Fluorophen Hemorphin-4 Hydrocodone Hydromorphone Ibogaine Isomethadone JNJ-20788560 KNT-127 Kratom Laudanosine Leu-enkephalin Levomethorphan Levorphanol Lexanopadol Lofentanil Met-enkephalin (metenkefalin) Metazocine Metkefamide Mitragynine Mitragynine pseudoindoxyl Morphine N-Phenethyl-14-ethoxymetopon Norbuprenorphine NalBzOH O-Desmethyltramadol Oripavine Oxycodone Oxymorphone Pethidine (meperidine) Proglumide Racemethorphan Racemorphan RWJ-394674 Samidorphan SB-235863 SKF-10047 SNC-80 SNC-162 TAN-67 (SB-205,607) TH-030418 Thebaine Thiobromadol (C-8813) Tianeptine Tonazocine Tramadol TRV250 Xorphanol Zenazocine Antagonists: 4',7-Dihydroxyflavone 5'-NTII 6β-Naltrexol 6β-Naltrexol-d4 α-Santolol β-Chlornaltrexamine Apigenin AT-076 Axelopran Bevenopran BNTX Catechin Catechin gallate Clocinnamox Diacetylnalorphine Diprenorphine ECG EGC Eluxadoline Epicatechin ICI-154129 ICI-174864 LY-255582 LY-2196044 Methylnaltrexone Methylnaltrindole N-Benzylnaltrindole Nalmefene Nalorphine Naltrexone Naltriben Naltrindole Naloxone Naringenin Noribogaine Pawhuskin A Quadazocine SDM25N SoRI-9409 Taxifolin Thienorphine Unknown/unsorted: 18-MC Cannabidiol Coronaridine Cyproterone acetate Tabernanthine Tetrahydrocannabinol

KOR	Agonists: 6'-GNTI 8-CAC 18-MC 14-Methoxymetopon β-Chlornaltrexamine β-Funaltrexamine Adrenorphin (metorphamide) Akuuamicine Alazocine Allomatrine Asimadoline BAM-12P BAM-18P BAM-22P Big dynorphin Bremazocine BRL-52537 Butorphan Butorphanol BW-373U86 Cebranopadol Ciprefadol CR665 Cyclazocine Cyclorphan Cyprenorphine Diamorphine (heroin) Diacetylnalorphine Difelikefalin Dihydroetorphine Dihydromorphine Diprenorphine Dynorphin A Dynorphin B (rimorphin) Eluxadoline Enadoline Eptazocine Erinacine E Ethylketazocine Etorphine Fedotozine Fentanyl Gemazocine GR-89696 GR-103545 Hemorphin-4 Herkinorin HS665 Hydromorphone HZ-2 Ibogaine ICI-199,441 ICI-204,448 Ketamine Ketazocine Laudanosine Leumorphin (dynorphin B-29) Levallorphan Levomethorphan Levorphanol Lexanopadol Lofentanil LPK-26 Lufuradom Matrine MB-1C-OH Menthol Metazocine Metkefamide Mianserin Mirtazapine Morphine Moxazocine MR-2034 N-MPPP Nalbuphine Nalbuphine sebacate NalBzOH Nalfurafine Nalmefene Nalodeine (N-allylnorcodeine) Nalorphine Naltriben Niravoline Norbuprenorphine Norbuprenorphine-3-glucuronide Noribogaine Norketamine O-Desmethyltramadol Oripavine Oxilorphan Oxycodone Pentazocine Pethidine (meperidine) Phenazocine Proxorphan Racemethorphan Racemorphan RB-64 Salvinorin A (salvia) Salvinorin B ethoxymethyl ether Salvinorin B methoxymethyl ether Samidorphan SKF-10047 Spiradoline (U-62,066) TH-030418 Thienorphine Tifluadom Tricyclic antidepressants (e.g., amitriptyline, desipramine, imipramine, nortriptyline) U-50,488 U-54,494A U-69,593 Xorphanol Antagonists: 4′-Hydroxyflavanone 4',7-Dihydroxyflavone 5'-GNTI 6'-GNTI 6β-Naltrexol 6β-Naltrexol-d4 β-Chlornaltrexamine Buprenorphine/samidorphan Amentoflavone ANTI Apigenin Arodyne AT-076 Axelopran AZ-MTAB Binaltorphimine BU09059 Buprenorphine Catechin Catechin gallate CERC-501 (LY-2456302) Clocinnamox Cyclofoxy Dezocine DIPPA EGC ECG Epicatechin Hyperoside JDTic LY-255582 LY-2196044 LY-2444296 LY-2459989 LY-2795050 MeJDTic Methylnaltrexone ML190 ML350 MR-2266 N-Fluoropropyl-JDTic Naloxone Naltrexone Naltrindole Naringenin Norbinaltorphimine Noribogaine Pawhuskin A PF-4455242 RB-64 Quadazocine Taxifolin UPHIT Zyklophin Unknown/unsorted: Akuammicine Akuammine Coronaridine Cyproterone acetate Dihydroakuuamine Ibogamine Tabernanthine

NOP	Agonists: (Arg14,Lys15)Nociceptin ((pF)Phe⁴)Nociceptin(1-13)NH₂ (Phe¹Ψ(CH₂-NH)Gly²)Nociceptin(1-13)NH₂ Ac-RYYRWK-NH₂ Ac-RYYRIK-NH₂ BU08070 Buprenorphine Cebranopadol Dihydroetorphine Etorphine JNJ-19385899 Levomethorphan Levorphanol Levorphanol Lexanopadol MCOPPB MT-7716 NNC 63-0532 Nociceptin (orphanin FQ) Nociceptin (1-11) Nociceptin (1-13)NH₂ Norbuprenorphine Racemethorphan Racemorphan Ro64-6198 Ro65-6570 SCH-221510 SCH-486757 SR-8993 SR-16435 TH-030418 Antagonists: (Nphe¹)Nociceptin(1-13)NH₂ AT-076 BAN-ORL-24 J-113397 JTC-801 LY-2940094 NalBzOH Nociceptin (1-7) Nocistatin SB-612111 SR-16430 Thienorphine Trap-101 UFP-101

Unsorted	β-Casomorphins Amidorphin BAM-20P Cytochrophin-4 Deprolorphin Gliadorphin (gluteomorphin) Gluten exorphins Hemorphins Kava constituents MEAGL MEAP NEM Neoendorphins Nepetalactone (catnip) Peptide B Peptide E Peptide F Peptide I Rubiscolins Soymorphins

Others	Enkephalinase inhibitors: Amastatin BL-2401 Candoxatril D -Phenylalanine Dexecadotril (retorphan) Ecadotril (sinorphan) Kelatorphan Racecadotril (acetorphan) RB-101 RB-120 RB-3007 Opiorphan Selank Semax Spinorphin Thiorphan Tynorphin Ubenimex (bestatin) Propeptides: β-Lipotropin (proendorphin) Prodynorphin Proenkephalin Pronociceptin Proopiomelanocortin (POMC) Others: Kyotorphin (met-enkephalin releaser/degradation stabilizer)

See also: Peptide receptor modulators

Nalmexone

Synthesis[edit]

See also[edit]

References[edit]

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