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Mu-opioid receptor agonists
IBNtxA
Другие языки:

IBNtxA

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IBNtxA
IBNtxA Structure.svg
Clinical data
ATC code
  • none
Identifiers
  • N-[(4R,4aS,7R,7aR,12bS)-3-(cyclopropylmethyl)-4a,9-dihydroxy-1,2,4,5,6,7,7a,13-octahydro-4,12-methanobenzofuro[3,2-e]isoquinoline-7-yl]-3-iodobenzamide
PubChem CID
ChemSpider
Chemical and physical data
Formula C27H29IN2O4
Molar mass 572.443 g·mol−1
3D model (JSmol)
  • C1C[C@]2([C@H]3CC4=C5[C@@]2(CCN3CC6CC6)[C@H]([C@@H]1NC(=O)C7=CC(=CC=C7)I)OC5=C(C=C4)O)O
  • InChI=1S/C27H29IN2O4/c28-18-3-1-2-17(12-18)25(32)29-19-8-9-27(33)21-13-16-6-7-20(31)23-22(16)26(27,24(19)34-23)10-11-30(21)14-15-4-5-15/h1-3,6-7,12,15,19,21,24,31,33H,4-5,8-11,13-14H2,(H,29,32)/t19-,21-,24+,26+,27-/m1/s1
  • Key:FGAFDGWRFOJPRY-XGTKUTNFSA-N

IBNtxA, or 3-iodobenzoyl naltrexamine, is an atypical opioid analgesic drug derived from naltrexone. In animal studies it produces potent analgesic effects that are blocked by levallorphan and so appear to be μ-opioid mediated, but it fails to produce constipation or respiratory depression, and is neither rewarding or aversive in conditioned place preference protocols. These unusual properties are thought to result from agonist action at a splice variant or heterodimer of the μ-opioid receptor, rather than at the classical full length form targeted by conventional opioid drugs.

In the Radioligand binding assay it has shown to have affinities of 0.11nM at the MOR, 0.24nM at the DOR and 0.03nM at the KOR and in the Hot- Plate Assay it is shown to be around 20x more potent than morphine. Azido Aryl Analogues of IBNtxA retain significant activity at the MOR.



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