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Ramkumar R, Srikriya S, Anbarasan P. Copper(I)-Catalyzed Tandem Aminobenzannulation of Dienyne with Sulfonyl Azide. J Org Chem 2024; 89:3292-3303. [PMID: 38373699 DOI: 10.1021/acs.joc.3c02742] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/21/2024]
Abstract
A general and efficient copper-catalyzed tandem aminobenzannulation of dienyne has been accomplished employing sulfonyl azides as a coupling partner. The reaction involves the formation of both C-C and C-N bonds via the initial generation of copper-catalyzed ketenimine from terminal alkyne and sulfonyl azide followed by electrocyclic ring closure and aromatization. The developed reaction is operationally simple and allows the synthesis of diverse substituted aminonaphthalenes and fused aminoarenes in good to excellent yields with high selectivities.
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Affiliation(s)
- Rajagopal Ramkumar
- Department of Chemistry, Indian Institute of Technology Madras, Chennai 600036, India
| | - Subramanian Srikriya
- Department of Chemistry, Indian Institute of Technology Madras, Chennai 600036, India
| | - Pazhamalai Anbarasan
- Department of Chemistry, Indian Institute of Technology Madras, Chennai 600036, India
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2
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Vargas DF, Larghi EL, Kaufman TS. The 6π-azaelectrocyclization of azatrienes. Synthetic applications in natural products, bioactive heterocycles, and related fields. Nat Prod Rep 2019; 36:354-401. [PMID: 30090891 DOI: 10.1039/c8np00014j] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Covering: 2006 to 2018 The application of the 6π-azaelectrocyclization of azatrienes as a key strategy for the synthesis of natural products, their analogs and related bioactive or biomedically-relevant compounds (from 2006 to date) is comprehensively reviewed. Details about reaction optimization studies, relevant reaction mechanisms and conditions are also discussed.
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Affiliation(s)
- Didier F Vargas
- Instituto de Química Rosario (IQUIR, CONICET-UNR), Facultad de Ciencias Bioquímicas y Farmacéuticas - Universidad Nacional de Rosario, Suipacha 531, 2000 Rosario, Argentina.
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3
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Joshi PV, Sayed AA, RaviKumar A, Puranik VG, Zinjarde SS. 4-Phenyl quinoline derivatives as potential serotonin receptor ligands with antiproliferative activity. Eur J Med Chem 2017; 136:246-258. [DOI: 10.1016/j.ejmech.2017.05.002] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2016] [Revised: 04/16/2017] [Accepted: 05/01/2017] [Indexed: 02/03/2023]
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4
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Cappelli A, Anzini M, Castriconi F, Grisci G, Paolino M, Braile C, Valenti S, Giuliani G, Vomero S, Di Capua A, Betti L, Giannaccini G, Lucacchini A, Ghelardini C, Di Cesare Mannelli L, Frosini M, Ricci L, Giorgi G, Mascia MP, Biggio G. Design, Synthesis, and Biological Evaluation of Imidazo[1,5-a]quinoline as Highly Potent Ligands of Central Benzodiazepine Receptors. J Med Chem 2016; 59:3353-72. [PMID: 26982523 DOI: 10.1021/acs.jmedchem.6b00034] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A series of imidazo[1,5-a]quinoline derivatives was designed and synthesized as central benzodiazepine receptor (CBR) ligands. Most of the compounds showed high CBR affinity with Ki values within the submicromolar and subnanomolar ranges with interesting modulations in their structure-affinity relationships. In particular, fluoroderivative 7w (Ki = 0.44 nM) resulted in the most potent ligand among the imidazo[1,5-a]quinoline derivatives described so far. Overall, these observations confirmed the assumption concerning the presence of a large though apparently saturable lipophilic pocket in the CBR binding site region interacting with positions 4 and 5 of the imidazo[1,5-a]quinoline nucleus. The in vivo biological characterization revealed that compounds 7a,c,d,l,m,q,r,w show anxiolytic and antiamnestic activities without the unpleasant myorelaxant side effects of the classical 1,4-BDZ. Furthermore, the effect of 7l,q,r, and 8i in lowering lactate dehydrogenase (LDH) release induced by ischemia-like conditions in rat brain slices suggested neuroprotective properties for these imidazo[1,5-a]quinoline derivatives.
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Affiliation(s)
- Andrea Cappelli
- Dipartimento di Biotecnologie, Chimica e Farmacia and European Research Centre for Drug Discovery and Development, Università degli Studi di Siena , Via A. Moro 2, 53100 Siena, Italy
| | - Maurizio Anzini
- Dipartimento di Biotecnologie, Chimica e Farmacia and European Research Centre for Drug Discovery and Development, Università degli Studi di Siena , Via A. Moro 2, 53100 Siena, Italy
| | - Federica Castriconi
- Dipartimento di Biotecnologie, Chimica e Farmacia and European Research Centre for Drug Discovery and Development, Università degli Studi di Siena , Via A. Moro 2, 53100 Siena, Italy
| | - Giorgio Grisci
- Dipartimento di Biotecnologie, Chimica e Farmacia and European Research Centre for Drug Discovery and Development, Università degli Studi di Siena , Via A. Moro 2, 53100 Siena, Italy
| | - Marco Paolino
- Dipartimento di Biotecnologie, Chimica e Farmacia and European Research Centre for Drug Discovery and Development, Università degli Studi di Siena , Via A. Moro 2, 53100 Siena, Italy
| | - Carlo Braile
- Dipartimento di Biotecnologie, Chimica e Farmacia and European Research Centre for Drug Discovery and Development, Università degli Studi di Siena , Via A. Moro 2, 53100 Siena, Italy
| | - Salvatore Valenti
- Dipartimento di Biotecnologie, Chimica e Farmacia and European Research Centre for Drug Discovery and Development, Università degli Studi di Siena , Via A. Moro 2, 53100 Siena, Italy
| | - Germano Giuliani
- Dipartimento di Biotecnologie, Chimica e Farmacia and European Research Centre for Drug Discovery and Development, Università degli Studi di Siena , Via A. Moro 2, 53100 Siena, Italy
| | - Salvatore Vomero
- Dipartimento di Biotecnologie, Chimica e Farmacia and European Research Centre for Drug Discovery and Development, Università degli Studi di Siena , Via A. Moro 2, 53100 Siena, Italy
| | - Angela Di Capua
- Dipartimento di Biotecnologie, Chimica e Farmacia and European Research Centre for Drug Discovery and Development, Università degli Studi di Siena , Via A. Moro 2, 53100 Siena, Italy
| | - Laura Betti
- Dipartimento di Farmacia, Università di Pisa , Via Bonanno 6, 56126 Pisa, Italy
| | - Gino Giannaccini
- Dipartimento di Farmacia, Università di Pisa , Via Bonanno 6, 56126 Pisa, Italy
| | - Antonio Lucacchini
- Dipartimento di Farmacia, Università di Pisa , Via Bonanno 6, 56126 Pisa, Italy
| | - Carla Ghelardini
- Dipartimento di Neuroscienze, Psicologia, Area del Farmaco e Salute del Bambino (NEUROFARBA), Sezione Farmacologia e Tossicologia, Università di Firenze , Viale G. Pieraccini 6, 50139 Firenze, Italy
| | - Lorenzo Di Cesare Mannelli
- Dipartimento di Neuroscienze, Psicologia, Area del Farmaco e Salute del Bambino (NEUROFARBA), Sezione Farmacologia e Tossicologia, Università di Firenze , Viale G. Pieraccini 6, 50139 Firenze, Italy
| | - Maria Frosini
- Dipartimento di Scienze della Vita, Università degli Studi di Siena , Via A. Moro 2, 53100 Siena, Italy
| | - Lorenzo Ricci
- Dipartimento di Scienze della Vita, Università degli Studi di Siena , Via A. Moro 2, 53100 Siena, Italy
| | - Gianluca Giorgi
- Dipartimento di Biotecnologie, Chimica e Farmacia and European Research Centre for Drug Discovery and Development, Università degli Studi di Siena , Via A. Moro 2, 53100 Siena, Italy
| | - Maria Paola Mascia
- Istituto di Neuroscienze, Consiglio Nazionale delle Ricerche, Cittadella Universitaria , S.S. 554-Km 4.500, 09042 Monserrato Cagliari, Italy
| | - Giovanni Biggio
- Istituto di Neuroscienze, Consiglio Nazionale delle Ricerche, Cittadella Universitaria , S.S. 554-Km 4.500, 09042 Monserrato Cagliari, Italy
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5
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Jiang P, Li F, Xu Y, Liu Q, Wang J, Ding H, Yu R, Wang Q. Aromaticity-Dependent Regioselectivity in Pd(II)-Catalyzed C–H Direct Arylation of Aryl Ureas. Org Lett 2015; 17:5918-21. [DOI: 10.1021/acs.orglett.5b03153] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Pingping Jiang
- International
Joint Research
Laboratory of Nano-Micro Architecture Chemistry (NMAC), Department
of Organic Chemistry, College of Chemistry, Jilin University, 2699
Qianjin Street, Changchun 130012, P. R. China
| | - Feng Li
- International
Joint Research
Laboratory of Nano-Micro Architecture Chemistry (NMAC), Department
of Organic Chemistry, College of Chemistry, Jilin University, 2699
Qianjin Street, Changchun 130012, P. R. China
| | - Yongbao Xu
- International
Joint Research
Laboratory of Nano-Micro Architecture Chemistry (NMAC), Department
of Organic Chemistry, College of Chemistry, Jilin University, 2699
Qianjin Street, Changchun 130012, P. R. China
| | - Qingwen Liu
- International
Joint Research
Laboratory of Nano-Micro Architecture Chemistry (NMAC), Department
of Organic Chemistry, College of Chemistry, Jilin University, 2699
Qianjin Street, Changchun 130012, P. R. China
| | - Jing Wang
- International
Joint Research
Laboratory of Nano-Micro Architecture Chemistry (NMAC), Department
of Organic Chemistry, College of Chemistry, Jilin University, 2699
Qianjin Street, Changchun 130012, P. R. China
| | - Hong Ding
- International
Joint Research
Laboratory of Nano-Micro Architecture Chemistry (NMAC), Department
of Organic Chemistry, College of Chemistry, Jilin University, 2699
Qianjin Street, Changchun 130012, P. R. China
| | - Renfu Yu
- International
Joint Research
Laboratory of Nano-Micro Architecture Chemistry (NMAC), Department
of Organic Chemistry, College of Chemistry, Jilin University, 2699
Qianjin Street, Changchun 130012, P. R. China
| | - Qifeng Wang
- International
Joint Research
Laboratory of Nano-Micro Architecture Chemistry (NMAC), Department
of Organic Chemistry, College of Chemistry, Jilin University, 2699
Qianjin Street, Changchun 130012, P. R. China
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7
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Kon'kov SA, Moiseev IK, Zemtsova MN, Bormasheva KM. Synthesis of heterocyclic systems based on mono- and dicarbonyl adamantane derivatives. RUSSIAN CHEMICAL REVIEWS 2014. [DOI: 10.1070/rc2014v083n05abeh004374] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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8
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Verheij MHP, Thompson AJ, van Muijlwijk-Koezen JE, Lummis SCR, Leurs R, de Esch IJP. Design, synthesis, and structure-activity relationships of highly potent 5-HT₃ receptor ligands. J Med Chem 2012; 55:8603-14. [PMID: 23006041 PMCID: PMC3504484 DOI: 10.1021/jm300801u] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
![]()
The 5-HT3 receptor, a pentameric ligand-gated
ion channel
(pLGIC), is an important therapeutic target. During a recent fragment
screen, 6-chloro-N-methyl-2-(4-methyl-1,4-diazepan-1-yl)quinazolin-4-amine
(1) was identified as a 5-HT3R hit fragment.
Here we describe the synthesis and structure–activity relationships
(SAR) of a series of (iso)quinoline and quinazoline compounds that
were synthesized and screened for 5-HT3R affinity using
a [3H]granisetron displacement assay. These studies resulted
in the discovery of several high affinity ligands of which compound 22 showed the highest affinity (pKi > 10) for the 5-HT3 receptor. The observed SAR is
in
agreement with established pharmacophore models for 5-HT3 ligands and is used for ligand–receptor binding mode prediction
using homology modeling and in silico docking approaches.
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Affiliation(s)
- Mark H P Verheij
- Leiden/Amsterdam Center of Drug Research-LACDR, Amsterdam Institute for Molecules Medicines and Systems-AIMMS, Division of Medicinal Chemistry, Faculty of Sciences, VU University Amsterdam, Amsterdam, The Netherlands
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9
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Egorov IN, Tseitler TA, Kovalev IS, Slepukhin PA, Rusinov VL, Chupakhin ON. Chichibabin-type condensation of cyclic ketones with 3-R-1,2,4-triazin-5(4H)-ones. J Org Chem 2012; 77:6007-13. [PMID: 22721267 DOI: 10.1021/jo300697v] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Reactions between substituted 1,2,4-triazines and ketones were investigated. General procedures for one-pot synthesis of hydrogenated derivatives of such polycyclic systems as benzo[c][1,2,4]triazino[1,6-a][2]azecine, [1,2,4]triazino[1,6-f]phenantridine, and dicyclopenta[b,d]pyrido[1,2-f][1,2,4]triazine are described.
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Affiliation(s)
- Ilya N Egorov
- Department of Organic Chemistry, Ural Federal University, Mira St. 19, Ekaterinburg, 620 002, Russia.
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10
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Kozubková Z, Rouchal M, Nečas M, Vícha R. Novel Route to 4-(Adamantan-1-yl)quinoline Derivatives Based on the Friedländer Condensation. Helv Chim Acta 2012. [DOI: 10.1002/hlca.201100432] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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11
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Chelucci G, Marchetti M, Malkov AV, Friscourt F, Swarbrick ME, Kočovský P. New monoterpene-derived phosphinopyridine ligands and their application in the enantioselective iridium-catalyzed hydrogenation. Tetrahedron 2011. [DOI: 10.1016/j.tet.2011.05.075] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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12
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Galeazzi S, Hermans TM, Paolino M, Anzini M, Mennuni L, Giordani A, Caselli G, Makovec F, Meijer EW, Vomero S, Cappelli A. Multivalent Supramolecular Dendrimer-Based Drugs. Biomacromolecules 2009; 11:182-6. [DOI: 10.1021/bm901055a] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Simone Galeazzi
- Dipartimento Farmaco Chimico Tecnologico and European Research Centre for Drug Discovery and Development, Università di Siena, Via A. Moro, 53100 Siena, Italy, Laboratory of Macromolecular and Organic Chemistry, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands, and Rottapharm S.p.A., Via Valosa di Sopra 7, 20052 Monza, Italy
| | - Thomas M. Hermans
- Dipartimento Farmaco Chimico Tecnologico and European Research Centre for Drug Discovery and Development, Università di Siena, Via A. Moro, 53100 Siena, Italy, Laboratory of Macromolecular and Organic Chemistry, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands, and Rottapharm S.p.A., Via Valosa di Sopra 7, 20052 Monza, Italy
| | - Marco Paolino
- Dipartimento Farmaco Chimico Tecnologico and European Research Centre for Drug Discovery and Development, Università di Siena, Via A. Moro, 53100 Siena, Italy, Laboratory of Macromolecular and Organic Chemistry, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands, and Rottapharm S.p.A., Via Valosa di Sopra 7, 20052 Monza, Italy
| | - Maurizio Anzini
- Dipartimento Farmaco Chimico Tecnologico and European Research Centre for Drug Discovery and Development, Università di Siena, Via A. Moro, 53100 Siena, Italy, Laboratory of Macromolecular and Organic Chemistry, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands, and Rottapharm S.p.A., Via Valosa di Sopra 7, 20052 Monza, Italy
| | - Laura Mennuni
- Dipartimento Farmaco Chimico Tecnologico and European Research Centre for Drug Discovery and Development, Università di Siena, Via A. Moro, 53100 Siena, Italy, Laboratory of Macromolecular and Organic Chemistry, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands, and Rottapharm S.p.A., Via Valosa di Sopra 7, 20052 Monza, Italy
| | - Antonio Giordani
- Dipartimento Farmaco Chimico Tecnologico and European Research Centre for Drug Discovery and Development, Università di Siena, Via A. Moro, 53100 Siena, Italy, Laboratory of Macromolecular and Organic Chemistry, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands, and Rottapharm S.p.A., Via Valosa di Sopra 7, 20052 Monza, Italy
| | - Gianfranco Caselli
- Dipartimento Farmaco Chimico Tecnologico and European Research Centre for Drug Discovery and Development, Università di Siena, Via A. Moro, 53100 Siena, Italy, Laboratory of Macromolecular and Organic Chemistry, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands, and Rottapharm S.p.A., Via Valosa di Sopra 7, 20052 Monza, Italy
| | - Francesco Makovec
- Dipartimento Farmaco Chimico Tecnologico and European Research Centre for Drug Discovery and Development, Università di Siena, Via A. Moro, 53100 Siena, Italy, Laboratory of Macromolecular and Organic Chemistry, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands, and Rottapharm S.p.A., Via Valosa di Sopra 7, 20052 Monza, Italy
| | - E. W. Meijer
- Dipartimento Farmaco Chimico Tecnologico and European Research Centre for Drug Discovery and Development, Università di Siena, Via A. Moro, 53100 Siena, Italy, Laboratory of Macromolecular and Organic Chemistry, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands, and Rottapharm S.p.A., Via Valosa di Sopra 7, 20052 Monza, Italy
| | - Salvatore Vomero
- Dipartimento Farmaco Chimico Tecnologico and European Research Centre for Drug Discovery and Development, Università di Siena, Via A. Moro, 53100 Siena, Italy, Laboratory of Macromolecular and Organic Chemistry, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands, and Rottapharm S.p.A., Via Valosa di Sopra 7, 20052 Monza, Italy
| | - Andrea Cappelli
- Dipartimento Farmaco Chimico Tecnologico and European Research Centre for Drug Discovery and Development, Università di Siena, Via A. Moro, 53100 Siena, Italy, Laboratory of Macromolecular and Organic Chemistry, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands, and Rottapharm S.p.A., Via Valosa di Sopra 7, 20052 Monza, Italy
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Silveira CC, Larghi EL, Mendes SR, Bracca ABJ, Rinaldi F, Kaufman TS. Electrocyclization-Mediated Approach to 2-Methyltriclisine, an Unnatural Analog of the Azafluoranthene Alkaloid Triclisine. European J Org Chem 2009. [DOI: 10.1002/ejoc.200900673] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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14
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Colacino E, Benakki H, Guenoun F, Martinez J, Lamaty F. Synthesis of Novel Pyrrolo-[3,2-c]quinolines via Iron-Catalyzed Cross-Coupling Reaction of Grignard Reagents. SYNTHETIC COMMUN 2009. [DOI: 10.1080/00397910802550039] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Evelina Colacino
- a Institute of Biomolecules Max Mousseron, University of Montpellier , Montpellier, France
| | - Hafid Benakki
- a Institute of Biomolecules Max Mousseron, University of Montpellier , Montpellier, France
- b My Ismaïl University, Faculty of Sciences , Meknès, Morocco
| | - Farhate Guenoun
- b My Ismaïl University, Faculty of Sciences , Meknès, Morocco
| | - Jean Martinez
- a Institute of Biomolecules Max Mousseron, University of Montpellier , Montpellier, France
| | - Frédéric Lamaty
- a Institute of Biomolecules Max Mousseron, University of Montpellier , Montpellier, France
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15
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Anzini M, Braile C, Valenti S, Cappelli A, Vomero S, Marinelli L, Limongelli V, Novellino E, Betti L, Giannaccini G, Lucacchini A, Ghelardini C, Norcini M, Makovec F, Giorgi G, Ian Fryer R. Ethyl 8-Fluoro-6-(3-nitrophenyl)-4H-imidazo[1,5-a][1,4]benzodiazepine-3-carboxylate as Novel, Highly Potent, and Safe Antianxiety Agent. J Med Chem 2008; 51:4730-43. [DOI: 10.1021/jm8002944] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Maurizio Anzini
- Dipartimento Farmaco Chimico Tecnologico and European Research Centre for Drug Discovery and Development, Università degli Studi di Siena, Via A. Moro, 53100 Siena, Italy, Dipartimento di Chimica Farmaceutica e Tossicologica, Università di Napoli “Federico II”, Via D. Montesano 49, 80131 Napoli, Italy, Dipartimento di Psichiatria, Neurobiologia Farmacologia e Biotecnologie, Università di Pisa, Via Bonanno 6, 56126 Pisa, Italy, Dipartimento di Farmacologia Preclinica e Clinica “M. Aiazzi Mancini”,
| | - Carlo Braile
- Dipartimento Farmaco Chimico Tecnologico and European Research Centre for Drug Discovery and Development, Università degli Studi di Siena, Via A. Moro, 53100 Siena, Italy, Dipartimento di Chimica Farmaceutica e Tossicologica, Università di Napoli “Federico II”, Via D. Montesano 49, 80131 Napoli, Italy, Dipartimento di Psichiatria, Neurobiologia Farmacologia e Biotecnologie, Università di Pisa, Via Bonanno 6, 56126 Pisa, Italy, Dipartimento di Farmacologia Preclinica e Clinica “M. Aiazzi Mancini”,
| | - Salvatore Valenti
- Dipartimento Farmaco Chimico Tecnologico and European Research Centre for Drug Discovery and Development, Università degli Studi di Siena, Via A. Moro, 53100 Siena, Italy, Dipartimento di Chimica Farmaceutica e Tossicologica, Università di Napoli “Federico II”, Via D. Montesano 49, 80131 Napoli, Italy, Dipartimento di Psichiatria, Neurobiologia Farmacologia e Biotecnologie, Università di Pisa, Via Bonanno 6, 56126 Pisa, Italy, Dipartimento di Farmacologia Preclinica e Clinica “M. Aiazzi Mancini”,
| | - Andrea Cappelli
- Dipartimento Farmaco Chimico Tecnologico and European Research Centre for Drug Discovery and Development, Università degli Studi di Siena, Via A. Moro, 53100 Siena, Italy, Dipartimento di Chimica Farmaceutica e Tossicologica, Università di Napoli “Federico II”, Via D. Montesano 49, 80131 Napoli, Italy, Dipartimento di Psichiatria, Neurobiologia Farmacologia e Biotecnologie, Università di Pisa, Via Bonanno 6, 56126 Pisa, Italy, Dipartimento di Farmacologia Preclinica e Clinica “M. Aiazzi Mancini”,
| | - Salvatore Vomero
- Dipartimento Farmaco Chimico Tecnologico and European Research Centre for Drug Discovery and Development, Università degli Studi di Siena, Via A. Moro, 53100 Siena, Italy, Dipartimento di Chimica Farmaceutica e Tossicologica, Università di Napoli “Federico II”, Via D. Montesano 49, 80131 Napoli, Italy, Dipartimento di Psichiatria, Neurobiologia Farmacologia e Biotecnologie, Università di Pisa, Via Bonanno 6, 56126 Pisa, Italy, Dipartimento di Farmacologia Preclinica e Clinica “M. Aiazzi Mancini”,
| | - Luciana Marinelli
- Dipartimento Farmaco Chimico Tecnologico and European Research Centre for Drug Discovery and Development, Università degli Studi di Siena, Via A. Moro, 53100 Siena, Italy, Dipartimento di Chimica Farmaceutica e Tossicologica, Università di Napoli “Federico II”, Via D. Montesano 49, 80131 Napoli, Italy, Dipartimento di Psichiatria, Neurobiologia Farmacologia e Biotecnologie, Università di Pisa, Via Bonanno 6, 56126 Pisa, Italy, Dipartimento di Farmacologia Preclinica e Clinica “M. Aiazzi Mancini”,
| | - Vittorio Limongelli
- Dipartimento Farmaco Chimico Tecnologico and European Research Centre for Drug Discovery and Development, Università degli Studi di Siena, Via A. Moro, 53100 Siena, Italy, Dipartimento di Chimica Farmaceutica e Tossicologica, Università di Napoli “Federico II”, Via D. Montesano 49, 80131 Napoli, Italy, Dipartimento di Psichiatria, Neurobiologia Farmacologia e Biotecnologie, Università di Pisa, Via Bonanno 6, 56126 Pisa, Italy, Dipartimento di Farmacologia Preclinica e Clinica “M. Aiazzi Mancini”,
| | - Ettore Novellino
- Dipartimento Farmaco Chimico Tecnologico and European Research Centre for Drug Discovery and Development, Università degli Studi di Siena, Via A. Moro, 53100 Siena, Italy, Dipartimento di Chimica Farmaceutica e Tossicologica, Università di Napoli “Federico II”, Via D. Montesano 49, 80131 Napoli, Italy, Dipartimento di Psichiatria, Neurobiologia Farmacologia e Biotecnologie, Università di Pisa, Via Bonanno 6, 56126 Pisa, Italy, Dipartimento di Farmacologia Preclinica e Clinica “M. Aiazzi Mancini”,
| | - Laura Betti
- Dipartimento Farmaco Chimico Tecnologico and European Research Centre for Drug Discovery and Development, Università degli Studi di Siena, Via A. Moro, 53100 Siena, Italy, Dipartimento di Chimica Farmaceutica e Tossicologica, Università di Napoli “Federico II”, Via D. Montesano 49, 80131 Napoli, Italy, Dipartimento di Psichiatria, Neurobiologia Farmacologia e Biotecnologie, Università di Pisa, Via Bonanno 6, 56126 Pisa, Italy, Dipartimento di Farmacologia Preclinica e Clinica “M. Aiazzi Mancini”,
| | - Gino Giannaccini
- Dipartimento Farmaco Chimico Tecnologico and European Research Centre for Drug Discovery and Development, Università degli Studi di Siena, Via A. Moro, 53100 Siena, Italy, Dipartimento di Chimica Farmaceutica e Tossicologica, Università di Napoli “Federico II”, Via D. Montesano 49, 80131 Napoli, Italy, Dipartimento di Psichiatria, Neurobiologia Farmacologia e Biotecnologie, Università di Pisa, Via Bonanno 6, 56126 Pisa, Italy, Dipartimento di Farmacologia Preclinica e Clinica “M. Aiazzi Mancini”,
| | - Antonio Lucacchini
- Dipartimento Farmaco Chimico Tecnologico and European Research Centre for Drug Discovery and Development, Università degli Studi di Siena, Via A. Moro, 53100 Siena, Italy, Dipartimento di Chimica Farmaceutica e Tossicologica, Università di Napoli “Federico II”, Via D. Montesano 49, 80131 Napoli, Italy, Dipartimento di Psichiatria, Neurobiologia Farmacologia e Biotecnologie, Università di Pisa, Via Bonanno 6, 56126 Pisa, Italy, Dipartimento di Farmacologia Preclinica e Clinica “M. Aiazzi Mancini”,
| | - Carla Ghelardini
- Dipartimento Farmaco Chimico Tecnologico and European Research Centre for Drug Discovery and Development, Università degli Studi di Siena, Via A. Moro, 53100 Siena, Italy, Dipartimento di Chimica Farmaceutica e Tossicologica, Università di Napoli “Federico II”, Via D. Montesano 49, 80131 Napoli, Italy, Dipartimento di Psichiatria, Neurobiologia Farmacologia e Biotecnologie, Università di Pisa, Via Bonanno 6, 56126 Pisa, Italy, Dipartimento di Farmacologia Preclinica e Clinica “M. Aiazzi Mancini”,
| | - Monica Norcini
- Dipartimento Farmaco Chimico Tecnologico and European Research Centre for Drug Discovery and Development, Università degli Studi di Siena, Via A. Moro, 53100 Siena, Italy, Dipartimento di Chimica Farmaceutica e Tossicologica, Università di Napoli “Federico II”, Via D. Montesano 49, 80131 Napoli, Italy, Dipartimento di Psichiatria, Neurobiologia Farmacologia e Biotecnologie, Università di Pisa, Via Bonanno 6, 56126 Pisa, Italy, Dipartimento di Farmacologia Preclinica e Clinica “M. Aiazzi Mancini”,
| | - Francesco Makovec
- Dipartimento Farmaco Chimico Tecnologico and European Research Centre for Drug Discovery and Development, Università degli Studi di Siena, Via A. Moro, 53100 Siena, Italy, Dipartimento di Chimica Farmaceutica e Tossicologica, Università di Napoli “Federico II”, Via D. Montesano 49, 80131 Napoli, Italy, Dipartimento di Psichiatria, Neurobiologia Farmacologia e Biotecnologie, Università di Pisa, Via Bonanno 6, 56126 Pisa, Italy, Dipartimento di Farmacologia Preclinica e Clinica “M. Aiazzi Mancini”,
| | - Gianluca Giorgi
- Dipartimento Farmaco Chimico Tecnologico and European Research Centre for Drug Discovery and Development, Università degli Studi di Siena, Via A. Moro, 53100 Siena, Italy, Dipartimento di Chimica Farmaceutica e Tossicologica, Università di Napoli “Federico II”, Via D. Montesano 49, 80131 Napoli, Italy, Dipartimento di Psichiatria, Neurobiologia Farmacologia e Biotecnologie, Università di Pisa, Via Bonanno 6, 56126 Pisa, Italy, Dipartimento di Farmacologia Preclinica e Clinica “M. Aiazzi Mancini”,
| | - R. Ian Fryer
- Dipartimento Farmaco Chimico Tecnologico and European Research Centre for Drug Discovery and Development, Università degli Studi di Siena, Via A. Moro, 53100 Siena, Italy, Dipartimento di Chimica Farmaceutica e Tossicologica, Università di Napoli “Federico II”, Via D. Montesano 49, 80131 Napoli, Italy, Dipartimento di Psichiatria, Neurobiologia Farmacologia e Biotecnologie, Università di Pisa, Via Bonanno 6, 56126 Pisa, Italy, Dipartimento di Farmacologia Preclinica e Clinica “M. Aiazzi Mancini”,
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16
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Peters JU, Capuano T, Weber S, Kritter S, Sägesser M. A facile Horner–Wadsworth–Emmons route to 2-quinolones. Tetrahedron Lett 2008. [DOI: 10.1016/j.tetlet.2008.04.088] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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17
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Benakki H, Colacino E, André C, Guenoun F, Martinez J, Lamaty F. Microwave-assisted multi-step synthesis of novel pyrrolo-[3,2-c]quinoline derivatives. Tetrahedron 2008. [DOI: 10.1016/j.tet.2008.04.034] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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18
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Marsden SP, McGonagle AE, McKeever-Abbas B. Catalytic aza-Wittig Cyclizations for Heteroaromatic Synthesis. Org Lett 2008; 10:2589-91. [DOI: 10.1021/ol800921n] [Citation(s) in RCA: 127] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Stephen P. Marsden
- School of Chemistry, University of Leeds, Leeds LS2 9JT, United Kingdom, and AstraZeneca Process R&D, Charter Way, Silk Road Business Park, Macclesfield SK10 2NA, United Kingdom
| | - Alison E. McGonagle
- School of Chemistry, University of Leeds, Leeds LS2 9JT, United Kingdom, and AstraZeneca Process R&D, Charter Way, Silk Road Business Park, Macclesfield SK10 2NA, United Kingdom
| | - Ben McKeever-Abbas
- School of Chemistry, University of Leeds, Leeds LS2 9JT, United Kingdom, and AstraZeneca Process R&D, Charter Way, Silk Road Business Park, Macclesfield SK10 2NA, United Kingdom
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19
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Zefirova ON, Zefirov NS. Physiologically active compounds interacting with serotonin (5-hydroxytryptamine) receptors. RUSSIAN CHEMICAL REVIEWS 2007. [DOI: 10.1070/rc2001v070n04abeh000654] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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20
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Cappelli A, Giuliani G, Gallelli A, Valenti S, Anzini M, Mennuni L, Makovec F, Cupello A, Vomero S. Structure-affinity relationship studies on arylpiperazine derivatives related to quipazine as serotonin transporter ligands. Molecular basis of the selectivity SERT/5HT3 receptor. Bioorg Med Chem 2005; 13:3455-60. [PMID: 15848758 DOI: 10.1016/j.bmc.2005.03.008] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2004] [Accepted: 03/01/2005] [Indexed: 10/25/2022]
Abstract
A series of quipazine derivatives, previously synthesized to probe the 5-HT(3) receptor, was evaluated for its potential interaction with serotonin transporter (SERT). Some of them show nanomolar affinity for the rodent SERT comparable to or slightly higher than quipazine or N-methylquipazine. Subsequently a candidate was selected on the basis of its SERT affinity and submitted to a molecular manipulation of the basic moiety. The structure-affinity relationships obtained provided information on the role of the fused benzene ring of quipazine in the interaction with the SERT binding site and on the stereoelectronic requirements for the interaction of both the heteroaromatic component and the basic moiety. Moreover, the comparison of the structure-affinity relationships obtained in the present work with those concerning the interaction of these heteroarylpiperazine derivatives with 5-HT3 receptor suggested some molecular determinants of the selectivity SERT/5HT3 receptor.
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Affiliation(s)
- Andrea Cappelli
- Dipartimento Farmaco Chimico Tecnologico and European Research Centre for Drug Discovery and Development, Università di Siena, Via A. Moro, 53100 Siena, Italy.
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21
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Muñoz-Muriedas J, Perspicace S, Bech N, Guccione S, Orozco M, Luque FJ. Hydrophobic Molecular Similarity from MST Fractional Contributions to the Octanol/water Partition Coefficient. J Comput Aided Mol Des 2005; 19:401-19. [PMID: 16231200 DOI: 10.1007/s10822-005-7928-3] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2005] [Accepted: 05/22/2005] [Indexed: 10/25/2022]
Abstract
The use of a recently proposed hydrophobic similarity index for the alignment of molecules and the prediction of their differences in biological activity is described. The hydrophobic similarity index exploits atomic contributions to the octanol/water transfer free energy, which are evaluated by means of the fractional partitioning scheme developed within the framework of the Miertus-Scrocco-Tomasi continuum model. Those contributions are used to define global and local measures of hydrophobic similarity. The suitability of this computational strategy is examined for two series of compounds (ACAT inhibitors and 5-HT3 receptor agonists), which are aligned to maximize the global hydrophobic similarity using a Monte Carlo-simulated protocol. Indeed, the concept of local hydrophobic similarity is used to explore structure-activity relationships in a series of COX-2 inhibitors. Inspection of the 3D distribution of hydrophobic/hydrophilic contributions in the aligned molecules is valuable to identify regions of very similar hydrophobicity, which can define pharmacophoric recognition patterns. Moreover, low similar regions permit to identify structural elements that modulate the differences in activity between molecules. Finally, the quantitative relationships found between the pharmacological activity and the hydrophobic similarity index points out that not only the global hydrophobicity, but its 3D distribution, is important to gain insight into the activity of molecules.
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Affiliation(s)
- Jordi Muñoz-Muriedas
- Departament de Fisicoquímica, Facultat de Farmàcia, Universitat de Barcelona, Av. Diagonal 643, 08028, Barcelona, Spain
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22
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Cappelli A, Gallelli A, Manini M, Anzini M, Mennuni L, Makovec F, Menziani MC, Alcaro S, Ortuso F, Vomero S. Further Studies on the Interaction of the 5-Hydroxytryptamine3 (5-HT3) Receptor with Arylpiperazine Ligands. Development of a New 5-HT3 Receptor Ligand Showing Potent Acetylcholinesterase Inhibitory Properties. J Med Chem 2005; 48:3564-75. [PMID: 15887964 DOI: 10.1021/jm0493461] [Citation(s) in RCA: 54] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Novel arylpiperazine derivatives bearing lipophilic probes were designed, synthesized, and evaluated for their potential ability to interact with the 5-hydroxytryptamine(3) (5-HT(3)) receptor. Most of the new compounds show subnanomolar 5-HT(3) receptor affinity. Ester 6bc showing a picomolar K(i) value is one of the most potent 5-HT(3) receptor ligands so far synthesized. The structure-affinity relationship study suggests the existence of a certain degree of conformational freedom of the amino acid residues interacting with the substituents in positions 3 and 4 of the quipazine quinoline nucleus. Thus, the tacrine-related heterobivalent ligand 6o was designed in an attempt to capitalize on the evidence of such a steric tolerance. Compound 6o shows a nanomolar potency for both the 5-HT(3) receptor and the human AChE and represents the first example of a rationally designed high-affinity 5-HT(3) receptor ligand showing nanomolar AChE inhibitory activity. Finally, the computational analysis performed on compound 6o allowed the rationalization of the structure-energy determinants for AChE versus BuChE selectivity and revealed the existence of a subsite at the boundary of the 5-HT(3) receptor extracellular domain, which could represent a "peripheral" site similar to that evidenced in the AChE gorge.
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Affiliation(s)
- Andrea Cappelli
- Dipartimento Farmaco Chimico Tecnologico and European Research Centre for Drug Discovery and Development, Università di Siena, Via A. Moro, 53100 Siena, Italy.
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23
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Maksay G, Simonyi M, Bikádi Z. Subunit rotation models activation of serotonin 5-HT3AB receptors by agonists. J Comput Aided Mol Des 2005; 18:651-64. [PMID: 15849995 DOI: 10.1007/s10822-004-6259-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
The N-terminal extracellular regions of heterooligomeric 3AB-type human 5-hydroxytryptamine receptors (5-HT3ABR) were modelled based on the crystal structure of snail acetylcholine binding protein AChBP. Stepwise rotation of subunit A by 5 degrees was performed between -10 degrees and 15 degrees to mimic agonist binding and receptor activation. Anticlockwise rotation reduced the size of the binding cavity in interface AB and reorganised the network of hydrogen bonds along the interface. AB subunit dimers with different rotations were applied for docking of ligands with different efficacies: 5-HT, m-chlorophenylbiguanide, SR 57227, quinolinyl piperazine and lerisetron derivatives. All ligands were docked into the dimer with -10 degrees rotation representing ligand-free, open binding cavities similarly, without pharmacological discrimination. Their ammonium ions were in hydrogen bonding distance to the backbone carbonyl of W183. Anticlockwise rotation and contraction of the binding cavity led to distinctive docking interactions of agonists with E129 and cation-pi interactions of their ammonium ions. Side chains of several further amino acids participating in docking (Y143, Y153, Y234 and E236) are in agreement with the effects of point mutations in the binding loops. Our model postulates that 5-HT binds to W183 in a hydrophobic cleft as well as to E236 in a hydrophilic vestibule. Then it elicits anticlockwise rotation to draw in loop C via pi-cation-pi interactions of its ammonium ion with W183 and Y234. Finally, closure of the binding cavity might end in rebinding of 5-HT to E129 in the hydrophilic vestibule.
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Affiliation(s)
- Gábor Maksay
- Molecular Pharmacology Group, Institute for Biomolecular Chemistry, Chemical Research Centre, Hungarian Academy of Sciences, PO Box 17, 1525 Budapest, Hungary
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24
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Li H, Yang H, Petersen JL, Wang KK. Biradicals/Zwitterions from Thermolysis of Enyne−Isocyanates. Application to the Synthesis of 2(1H)-Pyridones, Benzofuro[3,2-c]pyridin-1(2H)-ones, 2,5-Dihydro-1H-pyrido[4,3-b]indol-1-ones, and Related Compounds. J Org Chem 2004; 69:4500-8. [PMID: 15202908 DOI: 10.1021/jo049716t] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Thermolysis of benzannulated enyne-isocyanates 13 and enyne-isocyanates 36 and 37 promoted the cycloaromatization reactions to generate in situ O,4-didehydro-2-hydroxyquinolines and O,4-didehydro-2-hydroxypyridines, respectively, as reactive intermediates. These cycloaromatized intermediates could be captured either as biradicals and/or as zwitterions depending on the nature of the substituent at the alkynyl terminus. The intermediate derived from cycloaromatization of 13a bearing a phenyl substituent could be regarded as biradical 14, which then abstracts hydrogen atoms from gamma-terpinene leading to 2(1H)-quinolinone 15. Alternatively, the same intermediate could also be regarded as zwitterion 14', which then undergoes an initial hydride abstraction from gamma-terpinene followed by protonation to produce 15. The presence of a 2-phenylethyl substituent in 13b and 37a or a 2-methylphenyl substituent in 37b also allowed the resulting intermediates to be captured intramolecularly either as biradicals or as zwitterions, producing 2(1H)-quinolinone 19, 2(1H)-pyridone 39, and benzopyranopyridine 43, respectively. On the other hand, with a 2-methoxyphenyl, a 2-(dimethylamino)phenyl, or a 3-methoxypropyl substituent, the chemical behavior of the cycloaromatized adduct could be best accounted for in terms of a zwitterionic intermediate leading to benzofuro[3,2-c]quinolin-6(5H)-one (20), 5,11-dihydro-11-methyl-6H-indolo[3,2-c]quinolin-6-one (25), benzofuro[3,2-c]pyridin-1(2H)-one 44, 2,5-dihydro-2,5-dimethyl-1H-pyrido[4,3-b]indol-1-one 46, and related compounds. Interestingly, thermolysis of 37f bearing a 2-(methoxymethyl)phenyl substituent at the alkynyl terminus produced the unexpected benzopyranopyridine 56 as the major product in a process involving the cleavage of the bond between the methoxyl oxygen and the adjacent methylene carbon. The efficiency and selectivity of the cycloaromatization reaction could also be enhanced by the introduction of 1.1 to 10 equiv of dimethylphenylsilyl chloride to the reaction mixture to capture the resulting zwitterion.
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Affiliation(s)
- Hongbin Li
- Department of Chemistry, West Virginia University, Morgantown, West Virginia 26506-6045, USA
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25
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Parihar HS, Kirschbaum KS. Electrostatic potential surfaces of 5-HT(3)R agonists suggest accessory cation-pi site adjacent to agonist binding domain. Bioorg Med Chem Lett 2002; 12:2743-7. [PMID: 12217367 DOI: 10.1016/s0960-894x(02)00514-0] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
Electrostatic potential surface mapping of various aromatic ring systems contained in 5-HT(3)R agonists indicate that some agonists contain an aromatic moiety capable of a favorable cation-pi interaction next to the e-face of pyridine (or its bioisostere). A pharmacophore model has been proposed based on superimposition of two distinct 'aryl' interactions.
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Affiliation(s)
- Harish S Parihar
- Department of Basic Pharmaceutical Sciences, College of Pharmacy, The University of Louisiana at Monroe, Monroe, LA 71209, USA
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26
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Cappelli A, Gallelli A, Braile C, Anzini M, Vomero S, Mennuni L, Makovec F, Menziani MC, De Benedetti PG, Donati A, Giorgi G. Novel potent 5-HT(3) receptor ligands based on the pyrrolidone structure. Effects of the quaternization of the basic nitrogen on the interaction with 5-HT(3) receptor. Bioorg Med Chem 2002; 10:2681-91. [PMID: 12057657 DOI: 10.1016/s0968-0896(02)00093-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The results of a comprehensive structure-affinity relationship study on the effect of the quaternization (i.e., N-methylation) of structurally different ligands in the classes of tropane and quinuclidine derivatives are described. This study shows that the effects of the quaternization of the basic nitrogen of these 5-HT(3) receptor ligands appear to be strictly structure-dependent suggesting that different binding modes are operative at 5-HT(3) receptor binding site. The different effect of the quaternization of the basic nitrogen of structurally different ligands were rationalized in terms of the interaction with the receptor by means of the combined use of experimental techniques (X-ray diffraction and NMR studies) and computational simulation studies.
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Affiliation(s)
- Andrea Cappelli
- Dipartimento Farmaco Chimico Tecnologico, Università degli Studi di Siena, Via A. Moro, 53100 Siena, Italy.
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27
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Cappelli A, Anzini M, Vomero S, Mennuni L, Makovec F, Doucet E, Hamon M, Menziani MC, De Benedetti PG, Giorgi G, Ghelardini C, Collina S. Novel potent 5-HT(3) receptor ligands based on the pyrrolidone structure: synthesis, biological evaluation, and computational rationalization of the ligand-receptor interaction modalities. Bioorg Med Chem 2002; 10:779-801. [PMID: 11814868 DOI: 10.1016/s0968-0896(01)00332-7] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Novel conformationally constrained derivatives of classical 5-HT(3) receptor antagonists were designed and synthesized with the aim of probing the central 5-HT(3) receptor recognition site in a systematic way. The newly-synthesized compounds were tested for their potential ability to inhibit [(3)H]granisetron specific binding to 5-HT(3) receptor in rat cortical membranes. These studies revealed subnanomolar affinity in some of the compounds under study. The most potent ligand in this series was found to be quinuclidine derivative (S)-7i, which showed an affinity comparable with that of the reference ligand granisetron. The potential 5-HT(3) agonist/antagonist activity of some selected compounds was assessed in vitro on the 5-HT(3) receptor-dependent [(14)C]guanidinium uptake in NG 108-15 cells. Both of the tropane derivatives tested in this functional assay (7a and 9a) showed antagonist properties, while the quinuclidine derivatives studied [the enantiomers of compounds 7i, 8g, and 9g, and compound (R)-8h] showed a full range of intrinsic efficacies. Therefore, the functional behavior of these 5-HT(3) receptor ligands appears to be affected by the structural features of both the azabicyclo moiety and the heteroaromatic portion. In agreement with the data obtained on NG 108-15 cells, investigations on the 5-HT(3) receptor-dependent Bezold-Jarisch reflex in urethane-anaesthetized rats confirmed the 5-HT(3) receptor antagonist properties of compounds 7a and (S)-7i showing for these compounds ID(50) values of 2.8 and 181 microg/kg, respectively. Finally, compounds 7a, (S)-7i and 9a (at the doses of 0.01, 1.0, and 0.01 mg/kg ip, respectively) prevented scopolamine-induced amnesia in the mouse passive avoidance test suggestive of a potential usefulness in cognitive disorders for these compounds. Qualitative and quantitative structure-affinity relationship studies were carried out by means of theoretical descriptors derived on a single structure and ad-hoc defined size and shape descriptors (indirect approach). The results showed to be useful in capturing information relevant to ligand-receptor interaction. Additional information derived by the analysis of the energy minimized 3-D structures of the ligand-receptor complexes (direct approach) suggested interesting mechanistic and methodological considerations on the binding mode multiplicity at the 5-HT(3) receptors and on the degree of tolerance allowed in the alignment of molecules for the indirect approach, respectively.
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Affiliation(s)
- Andrea Cappelli
- Dipartimento Farmaco Chimico Tecnologico, Università di Siena, Via A. Moro, 53100 Siena, Italy.
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28
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Parihar HS, Suryanarayanan A, Ma C, Joshi P, Venkataraman P, Schulte MK, Kirschbaum KS. 5-HT(3)R binding of lerisetron: an interdisciplinary approach to drug-Receptor interactions. Bioorg Med Chem Lett 2001; 11:2133-6. [PMID: 11514154 DOI: 10.1016/s0960-894x(01)00417-6] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
The design, synthesis, and use of lerisetron-based molecular probes to investigate the 5-HT(3)R binding site are described. A SAR study, which involved distance and electronic parameter modifications of lerisetron's N-benzyl group, resulted in the discovery of a partial agonist.
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Affiliation(s)
- H S Parihar
- Department of Basic Pharmaceutical Sciences, College of Pharmacy, The University of Louisiana at Monroe, 700 University Avenue, Monroe, LA 71209, USA
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29
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Baglin I, Daveu C, Lancelot JC, Bureau R, Dauphin F, Pfeiffer B, Renard P, Delagrange P, Rault S. First tricyclic oximino derivatives as 5-HT3 ligands. Bioorg Med Chem Lett 2001; 11:453-7. [PMID: 11229746 DOI: 10.1016/s0960-894x(00)00691-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
The design and synthesis of a new type of 5-HT3 ligand with subnanomolar affinity are described. The O-dialkylaminoethyloximinothienopyrrolizine structure was deduced from molecular modeling studies by replacement of an amidine moiety by an oximino one.
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Affiliation(s)
- I Baglin
- Centre d'Etudes et de Recherche sur le Médicament de Normandie, Université de Caen, France
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30
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Lee BS, Chu S, Lee BC, Chi DY, Choe YS, Jeong KJ, Jin C. Syntheses and binding affinities of 6-nitroquipazine analogues for serotonin transporter. Part 1. Bioorg Med Chem Lett 2000; 10:1559-62. [PMID: 10915050 DOI: 10.1016/s0960-894x(00)00290-0] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
6-Nitroquipazine has been known as one of the most potent and selective inhibitors of serotonin transporter in vitro and in vivo. Nine derivatives of 6-nitroquipazine were synthesized and tested for their potential abilities to displace [3H]citalopram binding to the rat cortical membranes.
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Affiliation(s)
- B S Lee
- Department of Chemistry, Inha University, Inchon, South Korea
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31
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Abstract
There is nothing more discouraging than for a patient to be given a specific diagnosis, then to be told that there is nothing that can be done. Physicians are equally disheartened to see exponential progress being made in the understanding of the pathophysiology of a complex disorder but few direct benefits resulting for their patients. Over the past 5 years, molecular genetic research has completely revolutionized the way in which the progressive cerebellar ataxias are classified and diagnosed, but it has yet to produce effective gene-based, neuroprotective, or neurorestorative therapies. The treatment of cerebellar ataxia remains primarily a neurorehabilitation challenge, employing physical, occupational, speech, and swallowing therapy; adaptive equipment; driver safety training; and nutritional counseling. Modest additional gains are seen with the use of medications that can improve imbalance, incoordination, or dysarthria (amantadine, buspirone, acetazolamide); cerebellar tremor (clonazepam, propranolol); and cerebellar or central vestibular nystagmus (gabapentin, baclofen, clonazepam). Many of the progressive cerebellar syndromes have associated features involving other neurologic systems (eg, spasticity, dystonia or rigidity, resting or rubral tremor, chorea, motor unit weakness or fatigue, autonomic dysfunction, peripheral or posterior column sensory loss, neuropathic pain or cramping, double vision, vision and hearing loss, dementia, and bowel, bladder, and sexual dysfunction), which can impede the treatment of the ataxic symptoms or can worsen with the use of certain drugs. Treatment of the associated features themselves may in turn worsen the ataxia either directly (as side effects of medication) or indirectly (eg, relaxation of lower limb spasticity that was acting as a stabilizer for an ataxic gait). Secondary complications of progressive ataxia can include deconditioning or immobility, weight loss or gain, skin breakdown, recurrent pulmonary and urinary tract infections, aspiration, occult respiratory failure, and obstructive sleep apnea, all of which can be life threatening. Depression in the patient and family members is common. Although no cures exist for most of the causes of cerebellar ataxia and there are as yet no proven ways to protect neurons from premature cell death or to restore neuronal populations that have been lost, symptomatic treatment can greatly improve the quality of life of these patients and prevent complications that could hasten death. Supportive interventions should always be offered-- education about the disease itself, genetic counseling, individual and family counseling, referral to support groups and advocacy groups, and guidance to online resources. Misinformation, fear, depression, hopelessness, isolation, and financial and interpersonal stress can often cause more harm to the patient and caregiver than the ataxia itself.
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Chapter 2. Recent advances in selective serotonin receptor modulation. ANNUAL REPORTS IN MEDICINAL CHEMISTRY 2000. [DOI: 10.1016/s0065-7743(00)35003-5] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
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