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Wenker Y, Soeberdt M, Daniliuc C, Ständer S, Schepmann D, Wünsch B. Synthesis and pharmacological evaluation of conformationally restricted κ-opioid receptor agonists. MEDCHEMCOMM 2016. [DOI: 10.1039/c6md00441e] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Additional N- and O-atoms in the bicyclic scaffold increase polarity and allow fine tuning of pharmacodynamic and pharmacokinetic properties of novel κ agonists.
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Affiliation(s)
- Yvonne Wenker
- Institut für Pharmazeutische und Medizinische Chemie der Westfälischen Wilhelms-Universität Münster
- D-48149 Münster
- Germany
| | - Michael Soeberdt
- Dr. August Wolff GmbH & Co. KG Arzneimittel
- D-33611 Bielefeld
- Germany
| | - Constantin Daniliuc
- Organisch-Chemisches Institut der Westfälischen Wilhelms-Universität Münster
- D-48149 Münster
- Germany
| | - Sonja Ständer
- Center for Chronic Pruritus and Department of Dermatology
- University Hospital Münster
- D-48149 Münster
- Germany
| | - Dirk Schepmann
- Institut für Pharmazeutische und Medizinische Chemie der Westfälischen Wilhelms-Universität Münster
- D-48149 Münster
- Germany
| | - Bernhard Wünsch
- Institut für Pharmazeutische und Medizinische Chemie der Westfälischen Wilhelms-Universität Münster
- D-48149 Münster
- Germany
- Cells-in-Motion Cluster of Excellence (EXC 1003 – CiM)
- Westfälische Wilhelms-Universität Münster
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2
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Fröhlich J, Lehmkuhl K, Fröhlich R, Wünsch B. Diastereoselective Synthesis of Cyclic Five-Membered trans,trans-Configured Nitrodiols by Double Henry Reaction of 1,4-Dialdehydes. Arch Pharm (Weinheim) 2015; 348:589-94. [PMID: 26010372 DOI: 10.1002/ardp.201500114] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2015] [Revised: 04/17/2015] [Accepted: 04/24/2015] [Indexed: 11/10/2022]
Abstract
Conformationally constrained perhydroquinoxalines 4 show high κ receptor affinity, selectivity over related receptors and full agonistic activity. Since the κ affinity can be correlated with the dihedral angle of the ethylenediamine pharmacophore (4a: 55°/71°), the dihedral angles of the postulated cyclopentane derivative 5a (73°/84°) and indane derivative 6a (77°/81°) were calculated. The first step of the synthesis represents a double Henry reaction of 1,4-dialdehydes 8 and 10 with nitromethane, leading predominantly to the trans,trans-configured nitrodiols 9 and 11. X-ray crystal structure analyses of 9 and 11 led to dihedral angles O2 N−C−C−OH of 73.4 and 88.3°, respectively, which reflect the calculated dihedral angles of the hypothesized final products 5a and 6a.
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Affiliation(s)
- Janine Fröhlich
- Institut für Pharmazeutische und Medizinische Chemie der Westfälischen Wilhelms-Universität Münster, Münster, Germany
| | - Kirstin Lehmkuhl
- Institut für Pharmazeutische und Medizinische Chemie der Westfälischen Wilhelms-Universität Münster, Münster, Germany
| | - Roland Fröhlich
- Organisch-Chemisches Institut der Universität Münster, Münster, Germany
| | - Bernhard Wünsch
- Institut für Pharmazeutische und Medizinische Chemie der Westfälischen Wilhelms-Universität Münster, Münster, Germany.,Cells-in-Motion Cluster of Excellence (EXC 1003-CiM), Westfälische Wilhelms-Universität Münster, Münster, Germany
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3
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Bourgeois C, Werfel E, Galla F, Lehmkuhl K, Torres-Gómez H, Schepmann D, Kögel B, Christoph T, Straßburger W, Englberger W, Soeberdt M, Hüwel S, Galla HJ, Wünsch B. Synthesis and pharmacological evaluation of 5-pyrrolidinylquinoxalines as a novel class of peripherally restricted κ-opioid receptor agonists. J Med Chem 2014; 57:6845-60. [PMID: 25062506 DOI: 10.1021/jm500940q] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
5-Pyrrolidinyl substituted perhydroquinoxalines were designed as conformationally restricted κ-opioid receptor agonists restricted to the periphery. The additional N atom of the quinoxaline system located outside the ethylenediamine κ pharmacophore allows the fine-tuning of the pharmacodynamic and pharmacokinetic properties. The perhydroquinoxalines were synthesized stereoselectively using the concept of late stage diversification of the central building blocks 14. In addition to high κ-opioid receptor affinity they demonstrate high selectivity over μ, δ, σ1, σ2, and NMDA receptors. In the [35S]GTPγS assay full agonism was observed. Because of their high polarity, the secondary amines 14a (log D7.4=0.26) and 14b (log D7.4=0.21) did not penetrate an artificial blood-brain barrier. 14b was able to inhibit the spontaneous pain reaction after rectal mustard oil application to mice (ED50=2.35 mg/kg). This analgesic effect is attributed to activation of peripherally located κ receptors, since 14b did not affect centrally mediated referred allodynia and hyperalgesia.
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Affiliation(s)
- Christian Bourgeois
- Institut für Pharmazeutische und Medizinische Chemie, Westfälische Wilhelms-Universität Münster , Corrensstraße 48, D-48149 Münster, Germany
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4
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Yuan Y, Zaidi SA, Elbegdorj O, Aschenbach LCK, Li G, Stevens DL, Scoggins KL, Dewey WL, Selley DE, Zhang Y. Design, synthesis, and biological evaluation of 14-heteroaromatic-substituted naltrexone derivatives: pharmacological profile switch from mu opioid receptor selectivity to mu/kappa opioid receptor dual selectivity. J Med Chem 2013; 56:9156-69. [PMID: 24144240 PMCID: PMC4373589 DOI: 10.1021/jm4012214] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
On the basis of a mu opioid receptor (MOR) homology model and the isosterism concept, three generations of 14-heteroaromatically substituted naltrexone derivatives were designed, synthesized, and evaluated as potential MOR-selective ligands. The first-generation ligands appeared to be MOR-selective, whereas the second and the third generation ones showed MOR/kappa opioid receptor (KOR) dual selectivity. Docking of ligands 2 (MOR selective) and 10 (MOR/KOR dual selective) to the three opioid receptor crystal structures revealed a nonconserved-residue-facilitated hydrogen-bonding network that could be responsible for their distinctive selectivity profiles. The MOR/KOR dual-selective ligand 10 showed no agonism and acted as a potent antagonist in the tail-flick assay. It also produced less severe opioid withdrawal symptoms than naloxone in morphine-dependent mice. In conclusion, ligand 10 may serve as a novel lead compound to develop MOR/KOR dual-selective ligands, which might possess unique therapeutic value for opioid addiction treatment.
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MESH Headings
- Animals
- Behavior, Animal/drug effects
- CHO Cells
- Chemistry Techniques, Synthetic
- Cricetinae
- Cricetulus
- Drug Design
- Male
- Mice
- Models, Molecular
- Naltrexone/chemical synthesis
- Naltrexone/chemistry
- Naltrexone/metabolism
- Naltrexone/pharmacology
- Protein Conformation
- Receptors, Opioid, kappa/chemistry
- Receptors, Opioid, kappa/metabolism
- Receptors, Opioid, mu/chemistry
- Receptors, Opioid, mu/metabolism
- Substrate Specificity
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Affiliation(s)
- Yunyun Yuan
- Department of Medicinal Chemistry, Virginia Commonwealth University, 800 East Leigh Street, Richmond, VA 23298, USA
| | - Saheem A. Zaidi
- Department of Medicinal Chemistry, Virginia Commonwealth University, 800 East Leigh Street, Richmond, VA 23298, USA
| | - Orgil Elbegdorj
- Department of Medicinal Chemistry, Virginia Commonwealth University, 800 East Leigh Street, Richmond, VA 23298, USA
| | - Lindsey C. K. Aschenbach
- Department of Medicinal Chemistry, Virginia Commonwealth University, 800 East Leigh Street, Richmond, VA 23298, USA
| | - Guo Li
- Department of Medicinal Chemistry, Virginia Commonwealth University, 800 East Leigh Street, Richmond, VA 23298, USA
| | - David L. Stevens
- Department of Pharmacology and Toxicology, Virginia Commonwealth University, 410 North 12th Street, Richmond, VA 23298, USA
| | - Krista L. Scoggins
- Department of Pharmacology and Toxicology, Virginia Commonwealth University, 410 North 12th Street, Richmond, VA 23298, USA
| | - William L. Dewey
- Department of Pharmacology and Toxicology, Virginia Commonwealth University, 410 North 12th Street, Richmond, VA 23298, USA
| | - Dana E. Selley
- Department of Pharmacology and Toxicology, Virginia Commonwealth University, 410 North 12th Street, Richmond, VA 23298, USA
| | - Yan Zhang
- Department of Medicinal Chemistry, Virginia Commonwealth University, 800 East Leigh Street, Richmond, VA 23298, USA
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5
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Zhang Y, Elbegdorj O, Yuan Y, Beletskaya IO, Selley DE. Opioid receptor selectivity profile change via isosterism for 14-O-substituted naltrexone derivatives. Bioorg Med Chem Lett 2013; 23:3719-22. [PMID: 23721804 DOI: 10.1016/j.bmcl.2013.05.027] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2013] [Revised: 05/01/2013] [Accepted: 05/07/2013] [Indexed: 11/24/2022]
Abstract
Isosterism is commonly used in drug discovery and development to address stability, selectivity, toxicity, pharmacokinetics, and efficacy issues. A series of 14-O-substituted naltrexone derivatives were identified as potent mu opioid receptor (MOR) antagonists with improved selectivity over the kappa opioid receptor (KOR) and the delta opioid receptor (DOR), compared to naltrexone. Since esters are not metabolically very stable under typical physiological conditions, their corresponding amide analogs were thus synthesized and biologically evaluated. Unlike their isosteres, most of these novel ligands seem to be dually selective for the MOR and the KOR over the DOR. The restricted flexibility of the amide bond linkage might be responsible for their altered selectivity profile. However, the majority of the 14-N-substituted naltrexone derivatives produced marginal or no MOR stimulation in the (35)S-GTP[γS] assay, which resembled their ester analogs. The current study thus indicated that the 14-substituted naltrexone isosteres are not bioisosteres since they have distinctive pharmacological profile with the regard to their opioid receptor binding affinity and selectivity.
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Affiliation(s)
- Yan Zhang
- Department of Medicinal Chemistry, Virginia Commonwealth University, 800 East Leigh Street, Richmond, VA 23298, USA.
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6
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Moynihan HA, Derrick I, Broadbear JH, Greedy BM, Aceto MD, Harris LS, Purington LCS, Thomas MP, Woods JH, Traynor JR, Husbands SM, Lewis JW. Fumaroylamino-4,5-epoxymorphinans and related opioids with irreversible μ opioid receptor antagonist effects. J Med Chem 2012; 55:9868-74. [PMID: 23043264 PMCID: PMC3506128 DOI: 10.1021/jm301096s] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
We have previously shown that cinnamoyl derivatives of 14β-amino-17-cyclopropylmethyl-7,8-dihydronormorphinone and 7α-aminomethyl-6,14-endoethanonororipavine have pronounced pseudoirreversible μ opioid receptor (MOR) antagonism. The present communication describes the synthesis and evaluation of fumaroylamino analogues of these cinnamoylamino derivatives together with some related fumaroyl derivatives. The predominant activity of the new ligands was MOR antagonism. The fumaroylamino analogues (2a, 5a) of the pseudoirreversible antagonist cinnamoylamino morphinones and oripavines (2b, 5b) were themselves irreversible antagonists in vivo. However the fumaroylamino derivatives had significantly higher MOR efficacy than the cinnamoylamino derivatives in mouse antinociceptive tests. Comparison of 2a and 5a with the prototypic fumaroylamino opioid β-FNA (1a) shows that they have similar MOR irreversible antagonist actions but differ in the nature of their opioid receptor agonist effects; 2a is a predominant MOR agonist and 5a shows no opioid receptor selectivity, whereas the agonist effect of β-FNA is clearly κ opioid receptor (KOR) mediated.
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7
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Stavitskaya L, Coop A. Most recent developments and modifications of 14-alkylamino and 14-alkoxy-4,5-epoxymorphinan derivatives. Mini Rev Med Chem 2012; 11:1002-8. [PMID: 21861811 DOI: 10.2174/138955711797247752] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2011] [Revised: 04/10/2011] [Accepted: 05/20/2011] [Indexed: 11/22/2022]
Abstract
The 14-position of natural opiates (e.g. morphine) are unsubstituted, however synthetic approaches have uncovered that functionalizing position 14 gives rise to a wide range of diverse activities. This review focuses on SAR of the position, with the aim of aiding in the search for opioid analgesics with improved clinical profiles.
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Affiliation(s)
- L Stavitskaya
- Department of Pharmaceutical Sciences, University of Maryland School of Pharmacy, Baltimore, MD 21201, USA
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8
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Putative irreversible inhibitors of the human sodium-dependent bile acid transporter (hASBT; SLC10A2) support the role of transmembrane domain 7 in substrate binding/translocation. Pharm Res 2012; 29:1821-31. [PMID: 22354836 DOI: 10.1007/s11095-012-0706-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2011] [Accepted: 02/08/2012] [Indexed: 10/28/2022]
Abstract
PURPOSE To explore the involvement of transmembrane domain (TM) 7 of the human apical sodium-dependent bile acid transporter (hASBT) on bile acid (BA) binding/translocation, using two electrophilic BA derivatives as molecular probes. METHODS Two electrophilic derivatives of chenodeoxycholic acid (CDCA) were designed, synthesized and evaluated for their ability to inactivate hASBT, and the human organic cation/carnitine transporter (hOCTN2) as a control (i.e. a non-BA transporting model). The ability of electrophilic derivatives to interact with hASBT was evaluated by 2-aminoethyl-methanethiosulfonate (MTSEA)-biotin labeling of thiol groups in TM7 cysteine mutants. RESULTS Unlike native BAs, the electrophilic CDCA derivatives specifically inactivated hASBT, but not hOCTN2, and inhibited hASBT in a time- and concentration-dependent fashion. Preincubation of hASBT Cys-mutants in the exofacial half of TM7 with reactive electrophilic probes blocked transporter biotinylation by MTSEA-biotin, similar to 2-(trimethylammonium)ethyl-methanethiosulfonate (MTSET) blocking. This blocking pattern differed from that produced by native BAs, which exposed exofacial TM7 residues, thereby increasing staining. CONCLUSION Kinetic and biochemical data indicate these novel electrophilic BAs are potent and specific irreversible inhibitors of hASBT and offer new evidence about the role of TM7 in binding/translocation of bile acids.
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9
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Spetea M, Windisch P, Guo Y, Bileviciute-Ljungar I, Schütz J, Asim MF, Berzetei-Gurske IP, Riba P, Kiraly K, Fürst S, Al-Khrasani M, Schmidhammer H. Synthesis and pharmacological activities of 6-glycine substituted 14-phenylpropoxymorphinans, a novel class of opioids with high opioid receptor affinities and antinociceptive potencies. J Med Chem 2011; 54:980-8. [PMID: 21235243 PMCID: PMC3041239 DOI: 10.1021/jm101211p] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
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The synthesis and the effect of a combination of 6-glycine and 14-phenylpropoxy substitutions in N-methyl- and N-cycloproplymethylmorphinans on biological activities are described. Binding studies revealed that all new 14-phenylpropoxymorphinans (11−18) displayed high affinity to opioid receptors. Replacement of the 14-methoxy group with a phenylpropoxy group led to an enhancement in affinity to all three opioid receptor types, with most pronounced increases in δ and κ activities, hence resulting in a loss of μ receptor selectivity. All compounds (11−18) showed potent and long-lasting antinociceptive effects in the tail-flick test in rats after subcutaneous administration. For the N-methyl derivatives 13 and 14, analgesic potencies were in the range of their 14-methoxy analogues 9 and 10, respectively. Even derivatives 15−18 with an N-cyclopropylmethyl substituent acted as potent antinociceptive agents, being several fold more potent than morphine. Subcutaneous administration of compounds 13 and 14 produced significant and prolonged antinociceptive effects mediated through peripheral opioid mechanisms in carrageenan-induced inflammatory hyperalgesia in rats.
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Affiliation(s)
- Mariana Spetea
- Department of Pharmaceutical Chemistry, Institute of Pharmacy and Center for Molecular Biosciences Innsbruck, University of Innsbruck, Innrain 52a, A-6020 Innsbruck, Austria
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10
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Lewis JW, Husbands SM. 14-Amino-4,5-epoxymorphinan derivatives and their pharmacological actions. Top Curr Chem (Cham) 2010; 299:93-119. [PMID: 21630516 DOI: 10.1007/128_2010_89] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
14-Hydroxy-7,8-dihydromorphinone (oxymorphone) and its derivatives (oxycodone, naloxone, naltrexone) have become among the most important clinical agents to have been produced from opium. 14-Aminocodeinone and its 7,8-dihydro and morphinone derivatives are of more recent origin thanks to the work of Professor Gordon Kirby and his collaborators. The 14-amino parent compounds have proved of limited interest but their 14-acylamino- and 14-alkylamino derivatives have been extensively studied. The 4'-substituted cinnamoylamino-17-cyclopropylmethyl-7,8-dihydronormorphinones, C-CAM and M-CAM are the best available selective MOR irreversible antagonists and the related dihydrocodeinone MC-CAM, 4'-chloro-cinnamoylamino-17-cyclopropylmethyl-7,8-dihydronorcodeinone, is a long-acting MOR partial agonist with extended MOR-pseudoirreversible antagonist activity that could be a candidate for pharmacotherapy of opiate abuse/dependence.
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Affiliation(s)
- John W Lewis
- Department of Pharmacy and Pharmacology, University of Bath, Bath BA2 7AY, UK
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11
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Purington LC, Pogozheva ID, Traynor JR, Mosberg HI. Pentapeptides displaying mu opioid receptor agonist and delta opioid receptor partial agonist/antagonist properties. J Med Chem 2009; 52:7724-31. [PMID: 19788201 DOI: 10.1021/jm9007483] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Chronic use of mu-opioid agonists has been shown to cause neurochemical adaptations resulting in tolerance and dependence. While the analgesic effects of these drugs are mediated by mu-opioid receptors (MOR), several studies have shown that antagonism or knockdown of delta-opioid receptors (DOR) can lessen or prevent development of tolerance and dependence. On the basis of computational modeling of putative active and inactive conformations of MOR and DOR, we have synthesized a series of pentapeptides with the goal of developing a MOR agonist/DOR antagonist peptide with similar affinity at both receptors as a tool to probe functional opioid receptor interaction(s). The eight resulting naphthylalanine-substituted cyclic pentapeptides displayed variable mixed-efficacy profiles. The most promising peptide (9; Tyr-c(S-CH(2)-S)[D-Cys-Phe-2-Nal-Cys]NH(2)) displayed a MOR agonist and DOR partial agonist/antagonist profile and bound with equipotent affinity (K(i) approximately 0.5 nM) to both receptors, but also showed kappa opioid receptor (KOR) agonist activity.
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Affiliation(s)
- Lauren C Purington
- Department of Pharmacology, University of Michigan, Ann Arbor, Michigan 48109-5632, USA
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12
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Nieland NPR, Rennison D, Broadbear JH, Purington L, Woods JH, Traynor JR, Lewis JW, Husbands SM. 14beta-Arylpropiolylamino-17-cyclopropylmethyl-7,8-dihydronormorphinones and related opioids. Further examples of pseudoirreversible mu opioid receptor antagonists. J Med Chem 2009; 52:6926-30. [PMID: 19842669 DOI: 10.1021/jm901074a] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
14beta-4'-Chlorocinnamoylaminodihydronormorphinone (2a), and analogues, are selective pseudoirreversible antagonists of the mu opioid receptor (MOR). The preparation of analogues with ethynic bonds, replacing the ethenic bond of 2a, is described. The new ligands, in mouse antinociceptive assays, had pseudoirreversible MOR antagonist activity, which, in the case of 8b was of longer duration than that of 2a. The related codeinone (9b) had only antagonist activity in vivo, in contrast to 2a's codeinone equivalent 3a, which had potent antinociceptive activity.
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13
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Cami-Kobeci G, Neal AP, Bradbury FA, Purington LC, Aceto MD, Harris LS, Lewis JW, Traynor JR, Husbands SM. Mixed kappa/mu opioid receptor agonists: the 6 beta-naltrexamines. J Med Chem 2009; 52:1546-52. [PMID: 19253970 DOI: 10.1021/jm8015552] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Ligands from the naltrexamine series have consistently demonstrated agonist activity at kappa opioid receptors (KOR), with varying activity at the mu opioid receptor (MOR). Various 6 beta-cinnamoylamino derivatives were made with the aim of generating ligands with a KOR agonist/MOR partial agonist profile, as ligands with this activity may be of interest as treatment agents for cocaine abuse. The ligands all displayed the desired high affinity, nonselective binding in vitro and in the functional assays were high efficacy KOR agonists with some partial agonist activity at MOR. Two of the new ligands (12a, 12b) have been evaluated in vivo, with 12a acting as a KOR agonist and therefore somewhat similar to the previously evaluated analogues 3-6, while 12b displayed predominant MOR agonist activity.
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Affiliation(s)
- Gerta Cami-Kobeci
- Department of Pharmacy and Pharmacology, University of Bath, Claverton Down, Bath, BA2 7AY, United Kingdom
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14
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Moynihan H, Jales AR, Greedy BM, Rennison D, Broadbear JH, Purington L, Traynor JR, Woods JH, Lewis JW, Husbands SM. 14 beta-O-cinnamoylnaltrexone and related dihydrocodeinones are mu opioid receptor partial agonists with predominant antagonist activity. J Med Chem 2009; 52:1553-7. [PMID: 19253983 DOI: 10.1021/jm8012272] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
14-O-Cinnamoyl esters of naltrexone (6) were synthesized and evaluated in isolated tissue assays in vitro and in vivo in mouse antinociceptive assays. Their predominant opioid receptor activity was mu receptor (MOR) antagonism, but the unsubstituted cinnamoyl derivative (6a) had partial MOR agonist activity in vitro and in vivo. When compared to the equivalent 14-cinnamoylaminomorphinones (5), the cinnamoyloxy morphinones (6) as MOR antagonists had a shorter duration of action and were less effective as pseudoirreversible antagonists. The antinociceptive activity of the cinnamoyloxycodeinones (7) was not significantly greater than that of the morphinones (6), but they exhibited no evidence of any pseudoirreversible MOR antagonism. In both respects, these profiles differed from those of the equivalent 14-cinnamoylaminocodeinones (4).
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Affiliation(s)
- H Moynihan
- Department of Pharmacy and Pharmacology, University of Bath, Bath BA2 7AY, UK
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15
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Li G, Aschenbach LCK, He H, Selley DE, Zhang Y. 14-O-Heterocyclic-substituted naltrexone derivatives as non-peptide mu opioid receptor selective antagonists: design, synthesis, and biological studies. Bioorg Med Chem Lett 2009; 19:1825-9. [PMID: 19217280 PMCID: PMC2802822 DOI: 10.1016/j.bmcl.2008.12.093] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2008] [Revised: 12/19/2008] [Accepted: 12/19/2008] [Indexed: 11/26/2022]
Abstract
Mu opioid receptor antagonists have clinical utility and are important research tools. To develop non-peptide and highly selective mu opioid receptor antagonist, a series of 14-O-heterocyclic-substituted naltrexone derivatives were designed, synthesized, and evaluated. These compounds showed subnanomolar-to-nanomolar binding affinity for the mu opioid receptor. Among them, compound 1 exhibited the highest selectivity for the mu opioid receptor over the delta and kappa receptors. These results implicated an alternative 'address' domain in the extracellular loops of the mu opioid receptor.
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Affiliation(s)
- Guo Li
- Department of Medicinal Chemistry, Virginia Commonwealth University, 410 North 12th Street, PO Box 980613, Richmond, VA 23298-0613, USA
| | - Lindsey C. K. Aschenbach
- Department of Medicinal Chemistry, Virginia Commonwealth University, 410 North 12th Street, PO Box 980613, Richmond, VA 23298-0613, USA
| | - Hengjun He
- Department of Pharmacology and Toxicology, Virginia Commonwealth University, 410 North 12th Street, PO Box 980613, Richmond, VA 23298-0613, USA
| | - Dana E. Selley
- Department of Pharmacology and Toxicology, Virginia Commonwealth University, 410 North 12th Street, PO Box 980613, Richmond, VA 23298-0613, USA
| | - Yan Zhang
- Department of Medicinal Chemistry, Virginia Commonwealth University, 410 North 12th Street, PO Box 980613, Richmond, VA 23298-0613, USA
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16
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Abstract
This paper is the 29th consecutive installment of the annual review of research concerning the endogenous opioid system, now spanning 30 years of research. It summarizes papers published during 2006 that studied the behavioral effects of molecular, pharmacological and genetic manipulation of opioid peptides, opioid receptors, opioid agonists and opioid antagonists. The particular topics that continue to be covered include the molecular-biochemical effects and neurochemical localization studies of endogenous opioids and their receptors related to behavior (Section 2), and the roles of these opioid peptides and receptors in pain and analgesia (Section 3); stress and social status (Section 4); tolerance and dependence (Section 5); learning and memory (Section 6); eating and drinking (Section 7); alcohol and drugs of abuse (Section 8); sexual activity and hormones, pregnancy, development and endocrinology (Section 9); mental illness and mood (Section 10); seizures and neurological disorders (Section 11); electrical-related activity and neurophysiology (Section 12); general activity and locomotion (Section 13); gastrointestinal, renal and hepatic functions (Section 14); cardiovascular responses (Section 15); respiration and thermoregulation (Section 16); and immunological responses (Section 17).
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Affiliation(s)
- Richard J Bodnar
- Department of Psychology and Neuropsychology Doctoral Sub-Program, Queens College, City University of New York, CUNY, 65-30 Kissena Blvd., Flushing, NY 11367, United States.
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17
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Goodman A, Le Bourdonnec B, Dolle R. Mu Opioid Receptor Antagonists: Recent Developments. ChemMedChem 2007; 2:1552-70. [DOI: 10.1002/cmdc.200700143] [Citation(s) in RCA: 62] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Rennison D, Neal AP, Cami-Kobeci G, Aceto MD, Martinez-Bermejo F, Lewis JW, Husbands SM. Cinnamoyl derivatives of 7alpha-aminomethyl-6,14-endo-ethanotetrahydrothebaine and 7alpha-aminomethyl-6,14-endo-ethanotetrahydrooripavine and related opioid ligands. J Med Chem 2007; 50:5176-82. [PMID: 17887741 PMCID: PMC2597403 DOI: 10.1021/jm070255o] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A new series of ligands has been synthesized where the cinnamoyl group of the 14-cinnamoylamino morphinones has been introduced to the 7alpha-substituent of the 6,14-bridged oripavine series. In vitro the compounds were mostly low efficacy partial agonists or antagonists with some selectivity for the mu opioid receptor, with evidence of micro efficacy in vivo. The similarity in SAR between these 6,14-bridged oripavines and the 14-cinnamoylamino series suggests a similar mode of interaction with the micro opioid receptor.
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MESH Headings
- Analgesics/chemical synthesis
- Analgesics/pharmacology
- Animals
- Binding, Competitive
- CHO Cells
- Cinnamates/chemical synthesis
- Cinnamates/pharmacology
- Cricetinae
- Cricetulus
- Humans
- Ligands
- Mice
- Molecular Conformation
- Narcotic Antagonists
- Radioligand Assay
- Receptors, Opioid/agonists
- Receptors, Opioid, delta/agonists
- Receptors, Opioid, delta/antagonists & inhibitors
- Receptors, Opioid, kappa/agonists
- Receptors, Opioid, kappa/antagonists & inhibitors
- Receptors, Opioid, mu/agonists
- Receptors, Opioid, mu/antagonists & inhibitors
- Structure-Activity Relationship
- Thebaine/analogs & derivatives
- Thebaine/chemical synthesis
- Thebaine/pharmacology
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Affiliation(s)
- David Rennison
- Department of Pharmacy and Pharmacology, University of Bath, Bath, BA2 7AY, UK
| | - Adrian P. Neal
- Department of Pharmacy and Pharmacology, University of Bath, Bath, BA2 7AY, UK
| | - Gerta Cami-Kobeci
- Department of Pharmacy and Pharmacology, University of Bath, Bath, BA2 7AY, UK
| | - Mario D. Aceto
- Department of Pharmacology and Toxicology, Virginia Commonwealth University, Richmond, Virginia 23298
| | | | - John W. Lewis
- Department of Pharmacy and Pharmacology, University of Bath, Bath, BA2 7AY, UK
| | - Stephen M. Husbands
- Department of Pharmacy and Pharmacology, University of Bath, Bath, BA2 7AY, UK
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