1
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Cocolas AH, Lane AM, Musiak BS, Chartier EJ, Bedillion DA, Hejnosz SL, Rohde JJ, Lummis PA, Evanseck JD, Montgomery TD. Diastereoselective [3 + 2] Cycloaddition between Tertiary Amine N-Oxides and Substituted Alkenes to Access 7-Azanorbornanes. Org Lett 2024. [PMID: 39038111 DOI: 10.1021/acs.orglett.4c02013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/24/2024]
Abstract
We have developed a diastereoselective synthesis of 43 novel 7-azanorbornanes using tertiary amine N-oxides and substituted alkenes. Our method uses an efficient [3 + 2] cycloaddition, starting from either commercially available or easily accessible precursors to generate yields up to 97% and diastereomeric ratios up to >20:1. Density functional theory (DFT) calculations were performed, suggesting that the observed diastereoselectivity is likely due to steric considerations.
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Affiliation(s)
- Alexander H Cocolas
- Department of Chemistry and Biochemistry, Duquesne University, 600 Forbes Avenue, Pittsburgh, Pennsylvania 15282, United States
| | - Aiden M Lane
- Department of Chemistry and Biochemistry, Duquesne University, 600 Forbes Avenue, Pittsburgh, Pennsylvania 15282, United States
| | - Benjamin S Musiak
- Department of Chemistry and Biochemistry, Duquesne University, 600 Forbes Avenue, Pittsburgh, Pennsylvania 15282, United States
| | - Eric J Chartier
- Department of Chemistry and Biochemistry, Duquesne University, 600 Forbes Avenue, Pittsburgh, Pennsylvania 15282, United States
| | - Derek A Bedillion
- Department of Chemistry and Biochemistry, Duquesne University, 600 Forbes Avenue, Pittsburgh, Pennsylvania 15282, United States
| | - Sarah L Hejnosz
- Department of Chemistry and Biochemistry, Duquesne University, 600 Forbes Avenue, Pittsburgh, Pennsylvania 15282, United States
| | - Jeffrey J Rohde
- Department of Mathematics and Physical Sciences, Franciscan University of Steubenville, 1235 University Boulevard, Steubenville, Ohio 43952, United States
| | - Paul A Lummis
- Department of Chemistry and Biochemistry, Duquesne University, 600 Forbes Avenue, Pittsburgh, Pennsylvania 15282, United States
| | - Jeffrey D Evanseck
- Department of Chemistry and Biochemistry, Duquesne University, 600 Forbes Avenue, Pittsburgh, Pennsylvania 15282, United States
| | - Thomas D Montgomery
- Department of Chemistry and Biochemistry, Duquesne University, 600 Forbes Avenue, Pittsburgh, Pennsylvania 15282, United States
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2
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Oliveira GHC, Ramos LM, de Paiva RKC, Passos STA, Simões MM, Machado F, Correa JR, Neto BAD. Synthetic enzyme-catalyzed multicomponent reaction for Isoxazol-5(4 H)-one Syntheses, their properties and biological application; why should one study mechanisms? Org Biomol Chem 2021; 19:1514-1531. [PMID: 33332518 DOI: 10.1039/d0ob02114h] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
In this work, we describe the application of a synthetic enzyme (synzyme) as the catalyst to promote the multicomponent synthesis of isoxazol-5(4H)-one derivatives. The catalytic system could be used up to 15 times without any notable loss of its activity. Some derivatives showed fluorescence and their photophysical data were evaluated. The mechanism of the reaction was, for the first time, investigated and, among the three reaction pathway possibilities, only one was operating under the developed conditions. ESI-MS(/MS) allowed for both the simultaneous monitoring of the multicomponent reaction (MCR) and the proposition of a kinetic model to explain the transformation. The kinetic model pointed firmly to only one reaction pathway and helped to discard the other two possibilities. The antimicrobial abilities of all synthesized derivatives against Gram-positive and Gram-negative strains were also evaluated. The abilities of functional chromophores (fluorescent compounds) as live cell-imaging probes were verified and one of the multicomponent adducts could stain early endosomes selectively in bioimaging experiments.
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Affiliation(s)
- Gabriela H C Oliveira
- Laboratório de Química Medicinal e Síntese Orgânica (LaQuiMeSO), Câmpus de Ciências Exatas e Tecnológicas, Universidade Estadual de Goiás, CP 459, Anápolis-GO, Brazil.
| | - Luciana M Ramos
- Laboratório de Química Medicinal e Síntese Orgânica (LaQuiMeSO), Câmpus de Ciências Exatas e Tecnológicas, Universidade Estadual de Goiás, CP 459, Anápolis-GO, Brazil.
| | - Raíssa K C de Paiva
- Laboratório de Química Medicinal e Síntese Orgânica (LaQuiMeSO), Câmpus de Ciências Exatas e Tecnológicas, Universidade Estadual de Goiás, CP 459, Anápolis-GO, Brazil.
| | - Saulo T A Passos
- Laboratory of Medicinal and Technological Chemistry, University of Brasília, Chemistry Institute (IQ-UnB), Campus Universitario Darcy Ribeiro, Brasília, Distrito Federal 70904-900, Brazil.
| | - Marina M Simões
- Laboratório de Microscopia e Microanálise, Departamento de Biologia Celular, Instituto de Ciências Biológicas, Universidade de Brasília, Brasília, DF, Brazil
| | - Fabricio Machado
- Laboratory of Medicinal and Technological Chemistry, University of Brasília, Chemistry Institute (IQ-UnB), Campus Universitario Darcy Ribeiro, Brasília, Distrito Federal 70904-900, Brazil. and School of Chemistry, University of Nottingham, University Park, Nottingham, NG7 2RD, UK
| | - José R Correa
- Laboratory of Medicinal and Technological Chemistry, University of Brasília, Chemistry Institute (IQ-UnB), Campus Universitario Darcy Ribeiro, Brasília, Distrito Federal 70904-900, Brazil. and Laboratório de Microscopia e Microanálise, Departamento de Biologia Celular, Instituto de Ciências Biológicas, Universidade de Brasília, Brasília, DF, Brazil
| | - Brenno A D Neto
- Laboratory of Medicinal and Technological Chemistry, University of Brasília, Chemistry Institute (IQ-UnB), Campus Universitario Darcy Ribeiro, Brasília, Distrito Federal 70904-900, Brazil.
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3
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Salehi B, Sestito S, Rapposelli S, Peron G, Calina D, Sharifi-Rad M, Sharopov F, Martins N, Sharifi-Rad J. Epibatidine: A Promising Natural Alkaloid in Health. Biomolecules 2018; 9:biom9010006. [PMID: 30583611 PMCID: PMC6359223 DOI: 10.3390/biom9010006] [Citation(s) in RCA: 55] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2018] [Revised: 12/10/2018] [Accepted: 12/17/2018] [Indexed: 11/16/2022] Open
Abstract
Epibatidine is a natural alkaloid that acts at nicotinic acetylcholine receptors (nAChRs). The present review aims to carefully discuss the affinity of epibatidine and its synthetic derivatives, analogues to nAChRs for α4β2 subtype, pharmacokinetic parameters, and its role in health. Published literature shows a low affinity and lack of binding of epibatidine and its synthetic analogues to plasma proteins, indicating their availability for metabolism. Because of its high toxicity, the therapeutic use of epibatidine is hampered. However, new synthetic analogs endowed from this molecule have been developed, with a better therapeutic window and improved selectivity. All these aspects are also discussed here. On the other hand, many reports are devoted to structure⁻activity relationships to obtain optically active epibatidine and its analogues, and to access its pharmacological effects. Although pharmacological results are obtained from experimental studies and only a few clinical trials, new perspectives are open for the discovery of new drug therapies.
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Affiliation(s)
- Bahare Salehi
- Student Research Committee, School of Medicine, Bam University of Medical Sciences, Bam 44340847, Iran.
| | - Simona Sestito
- Department of Pharmacy, University of Pisa, Via Bonanno 6, 56126 Pisa, Italy.
| | - Simona Rapposelli
- Department of Pharmacy, University of Pisa, Via Bonanno 6, 56126 Pisa, Italy.
- Interdepartmental Research Centre for Biology and Pathology of Aging, University of Pisa, 55126 Pisa, Italy.
| | - Gregorio Peron
- Department of Pharmaceutical and Pharmacological Sciences, University of Padova, Via Francesco Marzolo, 5, 35131 Padova (PD), Italy.
| | - Daniela Calina
- Department of Clinical Pharmacy, University of Medicine and Pharmacy Craiova, Craiova 200349, Romania.
| | - Mehdi Sharifi-Rad
- Department of Medical Parasitology, Zabol University of Medical Sciences, Zabol 61663-335, Iran.
| | - Farukh Sharopov
- Department of Pharmaceutical Technology, Avicenna Tajik State Medical University, Rudaki 139, Dushanbe 734003, Tajikistan.
| | - Natália Martins
- Faculty of Medicine, University of Porto, Alameda Prof. Hernâni Monteiro, 4200-319 Porto, Portugal.
- Institute for Research and Innovation in Health (i3S), University of Porto, 4200-135 Porto, Portugal.
| | - Javad Sharifi-Rad
- Zabol Medicinal Plants Research Center, Zabol University of Medical Sciences, Zabol 61615-585, Iran.
- Department of Chemistry, Richardson College for the Environmental Science Complex, The University of Winnipeg, Winnipeg, MB R3B 2G3, Canada.
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4
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Kato S, Suzuki Y, Suzuki K, Haraguchi R, Fukuzawa SI. Silver-Catalyzed Diastereo- and Enantioselective Michael Addition and 1,3-Dipolar Cycloaddition Reactions of Imino Esters to 3-Methyl-4-nitro-5-styrylisoxazoles. J Org Chem 2018; 83:13965-13972. [DOI: 10.1021/acs.joc.8b02309] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Shuma Kato
- Department of Applied Chemistry, Institute of Science and Engineering, Chuo University, 1-13-27 Kasuga, Bunkyo-ku, Tokyo 112-8551, Japan
| | - Yuko Suzuki
- Department of Applied Chemistry, Institute of Science and Engineering, Chuo University, 1-13-27 Kasuga, Bunkyo-ku, Tokyo 112-8551, Japan
| | - Kota Suzuki
- Department of Applied Chemistry, Institute of Science and Engineering, Chuo University, 1-13-27 Kasuga, Bunkyo-ku, Tokyo 112-8551, Japan
| | - Ryosuke Haraguchi
- Department of Applied Chemistry, Institute of Science and Engineering, Chuo University, 1-13-27 Kasuga, Bunkyo-ku, Tokyo 112-8551, Japan
| | - Shin-ichi Fukuzawa
- Department of Applied Chemistry, Institute of Science and Engineering, Chuo University, 1-13-27 Kasuga, Bunkyo-ku, Tokyo 112-8551, Japan
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5
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Rizzi L, Gotti C, De Amici M, Dallanoce C, Matera C. A Small Library of 1,2,3-Triazole Analogs of CAP-55: Synthesis and Binding Affinity at Nicotinic Acetylcholine Receptors. Chem Biodivers 2018; 15:e1800210. [PMID: 29953725 DOI: 10.1002/cbdv.201800210] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2018] [Accepted: 06/26/2018] [Indexed: 11/08/2022]
Abstract
Alpha7 nicotinic acetylcholine receptor is emerging as a central regulator in inflammatory processes, as documented by increasing studies reported in the literature. For instance, the activation of this nicotinic receptor subtype in resident macrophages inhibits the production of pro-inflammatory cytokines, thereby attenuating local inflammatory responses, and may open a new window in the treatment of chronic inflammatory disease, such as Crohn's disease, rheumatoid arthritis, psoriasis, and asthma. In continuation of our ongoing research for the development of new cholinergic drug candidates, we selected the nicotine derivative CAP55, which was previously shown to exert anti-inflammatory effects via nicotinic stimulation, as a suitable compound for lead optimization. Through the isosteric replacement of its 3,5-disubstituted 4,5-dihydroisoxazole core with a 1,4-disubstituted 1,2,3-triazole ring, we could rapidly generate a small library of CAP55-related analogs via a one-pot copper(I)-catalyzed azide-alkyne cycloaddition. Receptor binding assays at nAChRs led to the identification of two promising derivatives, compounds 4 and 10, worthy of further pharmacological studies.
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Affiliation(s)
- Luca Rizzi
- Dipartimento di Scienze Farmaceutiche, Sezione di Chimica Farmaceutica 'Pietro Pratesi', Università degli Studi di Milano, Via L. Mangiagalli 25, 20133, Milano, Italy
| | - Cecilia Gotti
- Consiglio Nazionale delle Ricerche (CNR), Istituto di Neuroscienze, Via Vanvitelli 32, 20129, Milano, Italy.,Dipartimento di Biotecnologie Mediche e Medicina Traslazionale, Università degli Studi di Milano, Via Vanvitelli 32, 20129, Milano, Italy
| | - Marco De Amici
- Dipartimento di Scienze Farmaceutiche, Sezione di Chimica Farmaceutica 'Pietro Pratesi', Università degli Studi di Milano, Via L. Mangiagalli 25, 20133, Milano, Italy
| | - Clelia Dallanoce
- Dipartimento di Scienze Farmaceutiche, Sezione di Chimica Farmaceutica 'Pietro Pratesi', Università degli Studi di Milano, Via L. Mangiagalli 25, 20133, Milano, Italy
| | - Carlo Matera
- Dipartimento di Scienze Farmaceutiche, Sezione di Chimica Farmaceutica 'Pietro Pratesi', Università degli Studi di Milano, Via L. Mangiagalli 25, 20133, Milano, Italy
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6
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Cabrera PJ, Lee M, Sanford MS. Second-Generation Palladium Catalyst System for Transannular C-H Functionalization of Azabicycloalkanes. J Am Chem Soc 2018; 140:5599-5606. [PMID: 29652497 PMCID: PMC5956530 DOI: 10.1021/jacs.8b02142] [Citation(s) in RCA: 58] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
This article describes the development of a second-generation catalyst system for the transannular C-H functionalization of alicyclic amines. Pyridine- and quinoline-carboxylate ligands are shown to be highly effective for increasing the reaction rate, yield, and scope of Pd-catalyzed transannular C-H arylation reactions of azabicyclo[3.1.0]hexane, azabicyclo[3.1.1]heptane, azabicyclo[3.2.1]octane, and piperidine derivatives. Mechanistic studies reveal that the pyridine/quinoline-carboxylates play a role in impeding both reversible and irreversible catalyst decomposition pathways. These ligands enable the first reported examples of the transannular C-H arylation of the ubiquitous tropane, 7-azanorbornane, and homotropane cores. Finally, the pyridine/quinoline-carboxylates are shown to promote both transannular C-H arylation and transannular C-H dehydrogenation on a homotropane substrate.
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7
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Matera C, Dondio G, Braida D, Ponzoni L, De Amici M, Sala M, Dallanoce C. In vivo and in vitro ADMET profiling and in vivo pharmacodynamic investigations of a selective α7 nicotinic acetylcholine receptor agonist with a spirocyclic Δ 2 -isoxazoline molecular skeleton. Eur J Pharmacol 2018; 820:265-273. [DOI: 10.1016/j.ejphar.2017.12.047] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2017] [Revised: 12/19/2017] [Accepted: 12/20/2017] [Indexed: 10/18/2022]
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8
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Quadri M, Matera C, Silnović A, Pismataro MC, Horenstein NA, Stokes C, Papke RL, Dallanoce C. Identification of α7 Nicotinic Acetylcholine Receptor Silent Agonists Based on the Spirocyclic Quinuclidine-Δ 2 -Isoxazoline Scaffold: Synthesis and Electrophysiological Evaluation. ChemMedChem 2017; 12:1335-1348. [PMID: 28494140 DOI: 10.1002/cmdc.201700162] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2017] [Revised: 05/10/2017] [Indexed: 12/29/2022]
Abstract
Compound 11 (3-(benzyloxy)-1'-methyl-1'-azonia-4H-1'-azaspiro[isoxazole-5,3'-bicyclo[2.2.2]octane] iodide) was selected from a previous set of nicotinic ligands as a suitable model compound for the design of new silent agonists of α7 nicotinic acetylcholine receptors (nAChRs). Silent agonists evoke little or no channel activation but can induce the α7 desensitized Ds state, which is sensitive to a type II positive allosteric modulator, such as PNU-120596. Introduction of meta substituents into the benzyloxy moiety of 11 led to two sets of tertiary amines and quaternary ammonium salts based on the spirocyclic quinuclidinyl-Δ2 -isoxazoline scaffold. Electrophysiological assays performed on Xenopus laevis oocytes expressing human α7 nAChRs highlighted four compounds that are endowed with a significant silent-agonism profile. Structure-activity relationships of this group of analogues provided evidence of the crucial role of the positive charge at the quaternary quinuclidine nitrogen atom. Moreover, the present study indicates that meta substituents, in particular halogens, on the benzyloxy substructure direct specific interactions that stabilize a desensitized conformational state of the receptor and induce silent activity.
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Affiliation(s)
- Marta Quadri
- Dipartimento di Scienze Farmaceutiche, Sezione di Chimica Farmaceutica "Pietro Pratesi", Università degli Studi di Milano, Via Mangiagalli 25, 20133, Milano, Italy.,Department of Chemistry, University of Florida, P.O. Box 117200, Gainesville, FL, 32611-7200, USA.,Department of Pharmacology and Therapeutics, University of Florida, P.O. Box 100267, Gainesville, FL, 32610-0267, USA
| | - Carlo Matera
- Dipartimento di Scienze Farmaceutiche, Sezione di Chimica Farmaceutica "Pietro Pratesi", Università degli Studi di Milano, Via Mangiagalli 25, 20133, Milano, Italy.,Institute for Bioengineering of Catalonia (IBEC), Parc Científic de Barcelona (PCB), Carrer Baldiri Reixac 15-21, 08028, Barcelona, Spain
| | - Almin Silnović
- Dipartimento di Scienze Farmaceutiche, Sezione di Chimica Farmaceutica "Pietro Pratesi", Università degli Studi di Milano, Via Mangiagalli 25, 20133, Milano, Italy
| | - Maria Chiara Pismataro
- Dipartimento di Scienze Farmaceutiche, Sezione di Chimica Farmaceutica "Pietro Pratesi", Università degli Studi di Milano, Via Mangiagalli 25, 20133, Milano, Italy
| | - Nicole A Horenstein
- Department of Chemistry, University of Florida, P.O. Box 117200, Gainesville, FL, 32611-7200, USA
| | - Clare Stokes
- Department of Pharmacology and Therapeutics, University of Florida, P.O. Box 100267, Gainesville, FL, 32610-0267, USA
| | - Roger L Papke
- Department of Pharmacology and Therapeutics, University of Florida, P.O. Box 100267, Gainesville, FL, 32610-0267, USA
| | - Clelia Dallanoce
- Dipartimento di Scienze Farmaceutiche, Sezione di Chimica Farmaceutica "Pietro Pratesi", Università degli Studi di Milano, Via Mangiagalli 25, 20133, Milano, Italy
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9
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Liu K, Xiong Y, Wang ZF, Tao HY, Wang CJ. Ligand-controlled stereodivergent 1,3-dipolar cycloaddition of azomethine ylides with 3-methyl-4-nitro-5-styrylisoxazoles. Chem Commun (Camb) 2016; 52:9458-61. [DOI: 10.1039/c6cc03169b] [Citation(s) in RCA: 51] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
An unprecedented Ag(i)-catalyzed ligand-controlled stereodivergent 1,3-dipolar cycloaddition of azomethine ylides with 3-methyl-4-nitro-5-styrylisoxazoles has been developed to afford heterocycles bearing both methylisoxazole and pyrrolidine moieties.
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Affiliation(s)
- Kang Liu
- College of Chemistry and Molecular Sciences
- Wuhan University
- Wuhan 430072
- China
| | - Yong Xiong
- College of Chemistry and Molecular Sciences
- Wuhan University
- Wuhan 430072
- China
| | - Zuo-Fei Wang
- College of Chemistry and Molecular Sciences
- Wuhan University
- Wuhan 430072
- China
| | - Hai-Yan Tao
- College of Chemistry and Molecular Sciences
- Wuhan University
- Wuhan 430072
- China
| | - Chun-Jiang Wang
- College of Chemistry and Molecular Sciences
- Wuhan University
- Wuhan 430072
- China
- State Key Laboratory of Organometallic Chemistry
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10
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Bifunctional compounds targeting both D 2 and non-α7 nACh receptors: Design, synthesis and pharmacological characterization. Eur J Med Chem 2015; 101:367-83. [DOI: 10.1016/j.ejmech.2015.06.039] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2014] [Revised: 05/21/2015] [Accepted: 06/19/2015] [Indexed: 12/18/2022]
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11
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12
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Gul M, Kulu I, Ocal N. Hydroarylation Reactions of N-Acylaminosubstituted Tricyclic Imides. JOURNAL OF CHEMICAL RESEARCH 2013. [DOI: 10.3184/174751913x13686357345579] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
The palladium-catalysed hydroarylation of unsaturated N-acylamino-substituted tricyclic imides provided a new stereoselective synthesis of exo-aryl(heteroaryl)-substituted tricyclic N-acylamino imides.
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Affiliation(s)
- Melek Gul
- Amasya University, Faculty of Science and Arts, Ipekkoy Campus, 05100, Amasya, Turkey
| | - Irem Kulu
- Yildiz Technical University, Faculty of Science and Arts, Davutpasa Campus, 34220, Esenler-Istanbul, Turkey
| | - Nuket Ocal
- Yildiz Technical University, Faculty of Science and Arts, Davutpasa Campus, 34220, Esenler-Istanbul, Turkey
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13
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Kulu I, Goksu G, Sucu BO, Kopruceli A, Ocal N, Kaufmann DE. Synthesis of New Aryl-substituted Tandospirone and Epiboxidine Analogues and Isoxazoline Derivatives. ORG PREP PROCED INT 2013. [DOI: 10.1080/00304948.2013.743423] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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14
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Abstract
NewN-acylamino-substituted tricyclic imides have been screened for scavenging ability against the free radical 2,2-diphenyl-1-picryl-hydrazyl (DPPH•), chelating activity on ferrous ions, and reductive potential. The results were compared with synthetic antioxidants BHT, BHA, and Trolox. The compounds exhibited different levels of antioxidant activity in all tests.
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15
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Dallanoce C, Matera C, De Amici M, Rizzi L, Pucci L, Gotti C, Clementi F, De Micheli C. The enantiomers of epiboxidine and of two related analogs: synthesis and estimation of their binding affinity at α4β2 and α7 neuronal nicotinic acetylcholine receptors. Chirality 2012; 24:543-51. [PMID: 22566097 DOI: 10.1002/chir.22052] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2012] [Accepted: 03/19/2012] [Indexed: 11/07/2022]
Abstract
Epiboxidine hydrochlorides (+)-2 and (-)-2, which are the structural analogs of the antipodes of epibatidine (±)-1, as well as the enantiomeric pairs (+)-3/(-)-3 and (+)-4/(-)-4 were synthesized and tested for binding affinity at α4β2 and α7 nicotinic acetylcholine receptor (nAChR) subtypes. Final derivatives were prepared through the condensation of racemic N-Boc-7-azabicyclo[2.2.1]heptane-2-one (±)-5 with the resolving agent (R)-(+)-2-methyl-2-propanesulfinamide. The pharmacological analysis carried out on the three new enantiomeric pairs evidenced an overall negligible degree of enantioselectivity at both nAChRs subtypes, a result similar to that reported for both natural and unnatural epibatidine enantiomers at the same investigated receptor subtypes.
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Affiliation(s)
- Clelia Dallanoce
- Dipartimento di Scienze Farmaceutiche Pietro Pratesi, Università degli Studi di Milano, Milano, Italy.
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16
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Badenock JC. Metalation Reactions of Isoxazoles and Benzisoxazoles. TOPICS IN HETEROCYCLIC CHEMISTRY 2012. [DOI: 10.1007/7081_2012_80] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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17
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Dallanoce C, Matera C, Pucci L, Gotti C, Clementi F, Amici MD, Micheli CD. Synthesis and binding affinity at α4β2 and α7 nicotinic acetylcholine receptors of new analogs of epibatidine and epiboxidine containing the 7-azabicyclo[2.2.1]hept-2-ene ring system. Bioorg Med Chem Lett 2011; 22:829-32. [PMID: 22222032 DOI: 10.1016/j.bmcl.2011.12.052] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2011] [Revised: 12/09/2011] [Accepted: 12/10/2011] [Indexed: 01/23/2023]
Abstract
A group of novel racemic nicotinic ligands structurally related to epibatidine or epiboxidine [(±)-10-(±)-17] was synthesized through a palladium-catalyzed cross-coupling between the appropriate vinyl triflate and a range of organometallic heterocycles. The target compounds were evaluated for binding affinity at the α4β2 and α7 neuronal nicotinic receptors (nAChRs). The set of 3-pyridinyl derivatives (±)-10, (±)-11 and (±)-12 exhibited an affinity for the α4β2 nAChR subtype in the subnanomolar range (K(i) values of 0.20, 0.40 and 0.50nM, respectively) and behaved as α4β2 versus α7 subtype selective ligands. Interestingly, the epiboxidine-related dimethylammonium iodide (±)-17, which retained a good affinity for the α4β2 nAChR (K(i)=13.30nM), tightly bound also to the α7 subtype (K(i)=1.60nM), thus displaying a reversal of the affinity trend among the reference and new nicotinic ligands under investigation.
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Affiliation(s)
- Clelia Dallanoce
- Dipartimento di Scienze Farmaceutiche 'Pietro Pratesi', Università degli Studi di Milano, Via Mangiagalli 25, 20133 Milano, Italy.
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18
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New spirocyclic Δ2-isoxazoline derivatives related to selective agonists of α7 neuronal nicotinic acetylcholine receptors. Eur J Med Chem 2011; 46:5790-9. [DOI: 10.1016/j.ejmech.2011.09.028] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2011] [Revised: 07/12/2011] [Accepted: 09/19/2011] [Indexed: 11/22/2022]
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19
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Kulu I, Ocal N. The Synthesis of Epiboxidine and Related Analogues as Potential Pharmacological Agents. Helv Chim Acta 2011. [DOI: 10.1002/hlca.201100140] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Dallanoce C, Magrone P, Matera C, Frigerio F, Grazioso G, De Amici M, Fucile S, Piccari V, Frydenvang K, Pucci L, Gotti C, Clementi F, De Micheli C. Design, synthesis, and pharmacological characterization of novel spirocyclic quinuclidinyl-Δ2-isoxazoline derivatives as potent and selective agonists of α7 nicotinic acetylcholine receptors. ChemMedChem 2011; 6:889-903. [PMID: 21365765 DOI: 10.1002/cmdc.201000514] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2010] [Revised: 01/13/2011] [Indexed: 11/08/2022]
Abstract
A set of racemic spirocyclic quinuclidinyl-Δ(2)-isoxazoline derivatives was synthesized using a 1,3-dipolar cycloaddition-based approach. Target compounds were assayed for binding affinity toward rat neuronal homomeric (α7) and heteromeric (α4β2) nicotinic acetylcholine receptors. Δ(2) -Isoxazolines 3 a (3-Br), 6 a (3-OMe), 5 a (3-Ph), 8 a (3-OnPr), and 4 a (3-Me) were the ligands with the highest affinity for the α7 subtype (K(i) values equal to 13.5, 14.2, 25.0, 71.6, and 96.2 nM, respectively), and showed excellent α7 versus α4β2 subtype selectivity. These compounds, tested in electrophysiological experiments against human α7 and α4β2 receptors stably expressed in cell lines, behaved as partial α7 agonists with varying levels of potency. The two enantiomers of (±)-3-methoxy-1-oxa-2,7-diaza-7,10-ethanospiro[4.5]dec-2-ene sesquifumarate 6 a were prepared using (+)-dibenzoyl-L- or (-)-dibenzoyl-D-tartaric acid as resolving agents. Enantiomer (R)-(-)-6 a was found to be the eutomer, with K(i) values of 4.6 and 48.7 nM against rat and human α7 receptors, respectively.
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Affiliation(s)
- Clelia Dallanoce
- Dipartimento di Scienze Farmaceutiche Pietro Pratesi, Università degli Studi di Milano, Milan, Italy
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Gutierrez M, Astudillo L, Quesada L, Brito I, López-Rodríguez M. 1-[2-(4-Nitrophenyl)-5-(5-phenyl-1,2-oxazol-3-yl)-1,2,3,4-tetrahydroquinolin-4-yl]pyrrolidin-2-one. Acta Crystallogr Sect E Struct Rep Online 2011; 67:o308-9. [PMID: 21522997 PMCID: PMC3051757 DOI: 10.1107/s1600536810054048] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2010] [Accepted: 12/24/2010] [Indexed: 11/18/2022]
Abstract
The title compound, (I) C28H24N4O4, is the trans diastereoisomer of the compound 1-[2-(4-nitrophenyl)-6-(5-phenyl-3-isoxazolyl)-1,2,3,4-tetrahydro-4-quinolinyl]-2-pyrrolidinone monohydrate, (II) [Gutierrez et al. (2011 ▶). Acta Cryst. E67, o175–o176]. The most obvious differences between the diastereoisomers are the dihedral angles between the isoxazole ring and the benzene and phenyl rings [47.0 (2); 56.4 (2) and 33.3 (2); 11.0 (2)°, respectively, for (II) 75.4 (2) and 5.8 (3), respectively, for (I)]. In the crystal of (I), the molecules are linked by N—H⋯O interactions into a chain along [001] with graph-set notation C(8).
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Gutierrez M, Vallejos G, Fernández C, Cárdenas A, Brito I. 1-[2-(4-Nitro-phen-yl)-5-(5-phenyl-1,2-oxazol-3-yl)-1,2,3,4-tetra-hydro-quinolin-4-yl]pyrrolidin-2-one monohydrate. Acta Crystallogr Sect E Struct Rep Online 2010; 67:o175-6. [PMID: 21522681 PMCID: PMC3050245 DOI: 10.1107/s1600536810052463] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2010] [Accepted: 12/14/2010] [Indexed: 11/30/2022]
Abstract
The title compound, C28H24N4O4·H2O, crystallizes with two organic molecules and two solvent water molecules in the asymmetric unit. The most obvious difference between the molecules is the torsion angles between the isoxazole ring and the benzene and phenyl rings [47.0 (2)/56.4 (2) and 33.3 (2)/11.0 (2)°, respectively]. Another important difference is observed in the rotation of the nitro group with respect to the phenyl groups [3.5 (6) and 31.1 (6)°]. The pyrrolidinone fragment is cis oriented with respect to the 4-nitrophenyl fragment. In the crystal, molecules are linked into centrosymmetric R42(8) and R44(20) motifs by O—H⋯O and N—H⋯O interactions.
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Dallanoce C, Magrone P, Matera C, Lo Presti L, De Amici M, Riganti L, Clementi F, Gotti C, De Micheli C. Synthesis of novel chiral Δ2-isoxazoline derivatives related to ABT-418 and estimation of their affinity at neuronal nicotinic acetylcholine receptor subtypes. Eur J Med Chem 2010; 45:5594-601. [DOI: 10.1016/j.ejmech.2010.09.009] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2010] [Revised: 09/01/2010] [Accepted: 09/02/2010] [Indexed: 11/28/2022]
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RODA G, DALLANOCE C, GRAZIOSO G, LIBERTI V, AMICI MD. Determination of Acid Dissociation Constants of Compounds Active at Neuronal Nicotinic Acetylcholine Receptors by Means of Electrophoretic and Potentiometric Techniques. ANAL SCI 2010; 26:51-4. [DOI: 10.2116/analsci.26.51] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Affiliation(s)
- Gabriella RODA
- Dipartimento di Scienze Farmaceutiche "Pietro Pratesi", Università degli Studi di Milano
| | - Clelia DALLANOCE
- Dipartimento di Scienze Farmaceutiche "Pietro Pratesi", Università degli Studi di Milano
| | - Giovanni GRAZIOSO
- Dipartimento di Scienze Farmaceutiche "Pietro Pratesi", Università degli Studi di Milano
| | - Vincenzo LIBERTI
- Dipartimento di Scienze Farmaceutiche "Pietro Pratesi", Università degli Studi di Milano
| | - Marco De AMICI
- Dipartimento di Scienze Farmaceutiche "Pietro Pratesi", Università degli Studi di Milano
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Design of novel α7-subtype-preferring nicotinic acetylcholine receptor agonists: Application of docking and MM-PBSA computational approaches, synthetic and pharmacological studies. Bioorg Med Chem Lett 2009; 19:6353-7. [DOI: 10.1016/j.bmcl.2009.09.073] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2009] [Revised: 09/11/2009] [Accepted: 09/18/2009] [Indexed: 11/19/2022]
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Vallejos G, Gutierrez M, Astudillo L, Brito I, Cárdenas A. 5-(1-Cyclo-hexen-1-yl)-3-(4-methoxy-phen-yl)isoxazole. Acta Crystallogr Sect E Struct Rep Online 2009; 65:o920. [PMID: 21582622 PMCID: PMC2968997 DOI: 10.1107/s1600536809010903] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2009] [Accepted: 03/24/2009] [Indexed: 11/10/2022]
Abstract
In the title compound, C(16)H(17)NO(2), the isoxazole ring makes a dihedral angle of 14.81 (13)° with the 4-methoxy-phenyl ring. Two atoms of the cyclo-hexene ring are disordered over two almost equally occupied positions [0.526 (13)/0.474 (13)]. The mol-ecular structure features a short intra-molecular C-H⋯O contact.
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