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Murphy Kessabi F, Beaudegnies R, Quaranta L, Lamberth C. Synthesis of conformationally locked analogs of quinolin-6-yloxyacetamide fungicides. Tetrahedron Lett 2016. [DOI: 10.1016/j.tetlet.2016.10.104] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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2
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Jana GK, Sinha S. Reductive Heck coupling: an efficient approach toward the iboga alkaloids. Synthesis of ibogamine, epiibogamine and iboga analogs. Tetrahedron Lett 2012. [DOI: 10.1016/j.tetlet.2012.01.097] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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3
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Gómez E, Marco-Contelles J, Soriano E, Jimeno ML. N-Arylmethyl-7-azabicyclo[2.2.1]heptane derivatives: synthesis and reaction mechanisms. Tetrahedron 2009. [DOI: 10.1016/j.tet.2009.09.013] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Soriano E, Marco-Contelles J. Mechanistic analysis of intramolecular free radical reactions toward synthesis of 7-azabicyclo[2.2.1]heptane derivatives. J Org Chem 2009; 74:4061-7. [PMID: 19402620 DOI: 10.1021/jo900225f] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The mechanisms for the formation of conformationally constrained epibatidine analogues by intramolecular free radical processes have been computationally addressed by means of DFT methods. The mechanism and the critical effect of the 7-nitrogen protecting group on the outcome of these radical-mediated cyclizations are discussed. Theoretical findings account for unexpected experimental results and can assist in the selection of proper precursors for a successful cyclization.
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Affiliation(s)
- Elena Soriano
- Laboratorio de Radicales Libres y Química Computacional, IQOG (CSIC), C/Juan de la Cierva 3, 28006 Madrid, Spain.
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Computational analysis of the binding ability of heterocyclic and conformationally constrained epibatidine analogs in the neuronal nicotinic acetylcholine receptor. Mol Divers 2009; 14:201-11. [DOI: 10.1007/s11030-009-9161-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2009] [Accepted: 05/09/2009] [Indexed: 11/26/2022]
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Cheng J, Xu L, Stevens ED, Trudell ML, Izenwasser S, Wade D. Stereoselective synthesis of conformationally constrained tropane analogues: 6-Chloro-2,5-diazatetracyclo[8.5.0.02,13.04,9]pentadeca-4,6,8-triene-11-one and 6-chloro-2,7-diazatetracyclo-[8.5.0.02,13.04,9]pentadeca-4,6,8-triene-11-one. J Heterocycl Chem 2009. [DOI: 10.1002/jhet.5570410414] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Carroll FI, Robinson TP, Brieaddy LE, Atkinson RN, Mascarella SW, Damaj MI, Martin BR, Navarro HA. Synthesis and Nicotinic Acetylcholine Receptor Binding Properties of Bridged and Fused Ring Analogues of Epibatidine. J Med Chem 2007; 50:6383-91. [DOI: 10.1021/jm0704696] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- F. Ivy Carroll
- Organic and Medicinal Chemistry, Research Triangle Institute, Research Triangle Park, North Carolina 27709, and Department of Pharmacology and Toxicology, Virginia Commonwealth University, Richmond, Virginia 23298
| | - T. Philip Robinson
- Organic and Medicinal Chemistry, Research Triangle Institute, Research Triangle Park, North Carolina 27709, and Department of Pharmacology and Toxicology, Virginia Commonwealth University, Richmond, Virginia 23298
| | - Lawrence E. Brieaddy
- Organic and Medicinal Chemistry, Research Triangle Institute, Research Triangle Park, North Carolina 27709, and Department of Pharmacology and Toxicology, Virginia Commonwealth University, Richmond, Virginia 23298
| | - Robert N. Atkinson
- Organic and Medicinal Chemistry, Research Triangle Institute, Research Triangle Park, North Carolina 27709, and Department of Pharmacology and Toxicology, Virginia Commonwealth University, Richmond, Virginia 23298
| | - S. Wayne Mascarella
- Organic and Medicinal Chemistry, Research Triangle Institute, Research Triangle Park, North Carolina 27709, and Department of Pharmacology and Toxicology, Virginia Commonwealth University, Richmond, Virginia 23298
| | - M. Imad Damaj
- Organic and Medicinal Chemistry, Research Triangle Institute, Research Triangle Park, North Carolina 27709, and Department of Pharmacology and Toxicology, Virginia Commonwealth University, Richmond, Virginia 23298
| | - Billy R. Martin
- Organic and Medicinal Chemistry, Research Triangle Institute, Research Triangle Park, North Carolina 27709, and Department of Pharmacology and Toxicology, Virginia Commonwealth University, Richmond, Virginia 23298
| | - Hernán A. Navarro
- Organic and Medicinal Chemistry, Research Triangle Institute, Research Triangle Park, North Carolina 27709, and Department of Pharmacology and Toxicology, Virginia Commonwealth University, Richmond, Virginia 23298
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TATEISHI Y, AKABORI K, TANAKA K, NAGAMURA T. Hierarchical Thermal Molecular Motion in Thin Polymer Films. KOBUNSHI RONBUNSHU 2007. [DOI: 10.1295/koron.64.429] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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10
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Dallanoce C, Bazza P, Grazioso G, De Amici M, Gotti C, Riganti L, Clementi F, De Micheli C. Synthesis of Epibatidine-Related Δ2-Isoxazoline Derivatives and Evaluation of Their Binding Affinity at Neuronal Nicotinic Acetylcholine Receptors. European J Org Chem 2006. [DOI: 10.1002/ejoc.200600231] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Carroll FI, Ware R, Brieaddy LE, Navarro HA, Damaj MI, Martin BR. Synthesis, Nicotinic Acetylcholine Receptor Binding, and Antinociceptive Properties of 2‘-Fluoro-3‘-(substituted phenyl)deschloroepibatidine Analogues. Novel Nicotinic Antagonist. J Med Chem 2004; 47:4588-94. [PMID: 15317468 DOI: 10.1021/jm040078g] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A series of 2'-fluoro-3'-(substituted phenyl)deschloroepibatidine analogues (5a-k) showed high affinity for alpha4beta2 binding with no affinity at alpha7 nAChRs. The most potent compound was 2'-fluoro-3'-(4-nitrophenyl)deschloroepibatidine (5g) which possessed a Ki value of 0.009 nM. Surprisingly, none of the compounds showed agonist effects in pain tests and body temperature changes in mice even when tested at 10-15 mg/kg with the exception of 5b, which showed only very weak agonist effects. In contrast, all the compounds were potent functional antagonists of nicotine-induced antinociception. Interestingly, the 3'-substituted phenyl analogues 5b-k were 10-870-fold more effective as antagonists in the tail-flick test versus the hot-plate procedure. They failed to antagonize nicotine-induced hypothermia. The 4-chlorophenyl analogue (5e) (AD50 = 0.0003 in the tail-flick test) was the most potent and selective analogue. These results suggest that these compounds will be highly useful for identifying which specific receptor subtypes are involved in each of nicotine's pharmacological effects. These compounds also deserve consideration as potential pharmacotherapies for treatment of smoking cessation.
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Affiliation(s)
- F Ivy Carroll
- Chemistry and Life Sciences, Research Triangle Institute, P.O. Box 12194, Research Triangle Park, North Carolina 27709, USA.
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Carroll FI. Epibatidine structure–activity relationships. Bioorg Med Chem Lett 2004; 14:1889-96. [PMID: 15050621 DOI: 10.1016/j.bmcl.2004.02.007] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2003] [Revised: 02/03/2004] [Accepted: 02/03/2004] [Indexed: 10/26/2022]
Abstract
Epibatidine is a potent but nonselective nAChR agonist. Its biological effects appear to be mediated largely by alpha4beta2 nAChRs. Surprisingly, only a limited number of epibatidine analogues have been synthesized and evaluated in in vitro assays. Even fewer analogues have received in vivo pharmacological evaluation. In this paper, SAR studies directed toward epibatidine analogues will be reviewed.
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Affiliation(s)
- F Ivy Carroll
- Organic and Medicinal Chemistry, Research Triangle Institute, Research Triangle Park, NC 27709, USA.
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Wei ZL, Xiao Y, Kellar KJ, Kozikowski AP. Synthesis and pharmacological characterization of bivalent ligands of epibatidine at neuronal nicotinic acetylcholine receptors. Bioorg Med Chem Lett 2004; 14:1855-8. [PMID: 15050615 DOI: 10.1016/j.bmcl.2003.10.071] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/13/2003] [Indexed: 11/23/2022]
Abstract
A series of bivalent ligands 6a-d of epibatidine were synthesized. All four ligands showed nanomolar binding affinities at six neuronal nicotinic acetylcholine receptor (nAChR) subtypes in competition binding assays. In contrast to epibatidine, these bivalent ligands are weak partial agonists at the alpha3beta4 nAChR as shown by functional assays.
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Affiliation(s)
- Zhi-Liang Wei
- Department of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, University of Illinois at Chicago, 833 S. Wood Street, Chicago, IL 60612, USA
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Dong JC, Wang X, Li RT, Zhang HM, Cheng TM, Li CL. Synthesis and analgesic activity of hydrochlorides and quaternary ammoniums of epibatidine incorporated with amino acid ester. Bioorg Med Chem Lett 2003; 13:4327-9. [PMID: 14643319 DOI: 10.1016/j.bmcl.2003.09.047] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Hydrochloride derivatives 5a-c and quaternary ammonium derivatives 6a-c of epibatidine incorporated with amino acid ester were synthesized and evaluated for their in vivo analgesic activity and toxicity. Among all tested compounds, compound 6c has the most potent analgesic activity. The quaternary ammonium salts 6a and 6c showed better analgesic activity than the corresponding hydrochlorides 5a and 5c. Both 5a-c and 6a-c showed significantly lower toxicity than epibatidine itself.
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Affiliation(s)
- Jing-Chao Dong
- School of Pharmaceutical Sciences, Peking University, Beijing 100083, PR, China
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Abe H, Arai Y, Aoyagi S, Kibayashi C. Synthesis of conformationally constrained spirodihydrofuropyridine analogues of epibatidine. Tetrahedron Lett 2003. [DOI: 10.1016/s0040-4039(03)00395-2] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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