5'-Guanidinonaltrindole

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5'-Guanidinonaltrindole
Systematic (IUPAC) name
5'-Guanidinyl-17-(cyclopropylmethyl)-6,7-dehydro-4,5α-epoxy-3,14-dihydroxy-6,7-2',3'-indolomorphinan
Identifiers
CAS number	?
ATC code	?
PubChem	6604846
Chemical data
Formula	C27H29N5O3
Mol. mass	471.550 g/mol
SMILES	eMolecules & PubChem
Synonyms	5'-Guanidinonaltrindole, GNTI
Pharmacokinetic data
Bioavailability	?
Metabolism	?
Half life	?
Excretion	?
Therapeutic considerations
Pregnancy cat.	?
Legal status
Routes	?

5'-Guanidinonaltrindole (GNTI) is an opioid antagonist used in scientific research which is highly selective for the κ opioid receptor. It is 5x more potent and 500 times more selective than the commonly used κ-opioid antagonist norbinaltorphimine.^[1] It has a slow onset and long duration of action,^[2][3] and produces antidepressant effects in animal studies.^[4] It also increases allodynia by interfering with the action of the κ-opioid peptide dynorphin.^[5]

[edit] References

1. ^ Jones RM, Portoghese PS. 5'-Guanidinonaltrindole, a highly selective and potent kappa-opioid receptor antagonist. European Journal of Pharmacology. 2000 May 12;396(1):49-52. PMID 10822054
2. ^ Negus SS, Mello NK, Linsenmayer DC, Jones RM, Portoghese PS. Kappa opioid antagonist effects of the novel kappa antagonist 5'-guanidinonaltrindole (GNTI) in an assay of schedule-controlled behavior in rhesus monkeys. Psychopharmacology (Berlin). 2002 Oct;163(3-4):412-9. PMID 12373442
3. ^ Bruchas MR, Yang T, Schreiber S, Defino M, Kwan SC, Li S, Chavkin C. Long-acting kappa opioid antagonists disrupt receptor signaling and produce noncompetitive effects by activating c-Jun N-terminal kinase. Journal of Biological Chemistry. 2007 Oct 12;282(41):29803-11. PMID 17702750
4. ^ Mague SD, Pliakas AM, Todtenkopf MS, Tomasiewicz HC, Zhang Y, Stevens WC Jr, Jones RM, Portoghese PS, Carlezon WA Jr. Antidepressant-like effects of kappa-opioid receptor antagonists in the forced swim test in rats. Journal of Pharmacology and Experimental Therapeutics. 2003 Apr;305(1):323-30. PMID 12649385
5. ^ Obara I, Mika J, Schafer MK, Przewlocka B. Antagonists of the kappa-opioid receptor enhance allodynia in rats and mice after sciatic nerve ligation. British Journal of Pharmacology. 2003 Oct;140(3):538-46. PMID 12970097

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