1
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Gorle S, V.N. CS, L. VR, K. RR, Akula R. Glucose as an eco-friendly reducing agent for a one-pot multicomponent synthesis of quinoxalines. SYNTHETIC COMMUN 2023. [DOI: 10.1080/00397911.2023.2176237] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/13/2023]
Affiliation(s)
- Simhachalam Gorle
- Technology Development Centre, APSL, Dr. Reddy’s Laboratories Ltd, Hyderabad, India
- Department of Chemistry, GIS, GITAM (Deemed to be University), Visakhapatnam, India
| | - Chandra Sekhar V.N.
- Technology Development Centre, APSL, Dr. Reddy’s Laboratories Ltd, Hyderabad, India
- Department of Chemistry, GIS, GITAM (Deemed to be University), Visakhapatnam, India
| | - Vaikunta Rao L.
- Department of Chemistry, GIS, GITAM (Deemed to be University), Visakhapatnam, India
| | - Raghavendra Rao K.
- Technology Development Centre, APSL, Dr. Reddy’s Laboratories Ltd, Hyderabad, India
| | - Raghunadh Akula
- Technology Development Centre, APSL, Dr. Reddy’s Laboratories Ltd, Hyderabad, India
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2
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Skotnicki K, De la Fuente JR, Cañete Á, Berrios E, Bobrowski K. Radical Ions of 3-Styryl-quinoxalin-2-one Derivatives Studied by Pulse Radiolysis in Organic Solvents. J Phys Chem B 2018. [PMID: 29533616 DOI: 10.1021/acs.jpcb.8b01004] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The absorption-spectral and kinetic behaviors of radical ions and neutral hydrogenated radicals of seven 3-styryl-quinoxalin-2(1 H)-one (3-SQ) derivatives, one without substituents in the styryl moiety, four others with electron-donating (R = -CH3, -OCH3, and -N(CH3)2) or electron-withdrawing (R = -OCF3) substituents in the para position in their benzene ring, and remaining two with double methoxy substituents (-OCH3), however, at different positions (meta/para and ortho/meta) have been studied by UV-vis spectrophotometric pulse radiolysis in neat acetonitrile saturated with argon (Ar) and oxygen (O2) and in 2-propanol saturated with Ar, at room temperature. In acetonitrile solutions, the radical anions (4R-SQ•-) are characterized by two absorption maxima located at λmax = 470-490 nm and λmax = 510-540 nm, with the respective molar absorption coefficients ε470-490 = 8500-13 100 M-1 cm-1 and ε510-540 = 6100-10 300 M-1 cm-1, depending on the substituent (R). All 4R-SQ•- decay in acetonitrile via first-order kinetics, with the rate constants in the range (1.2-1.5) × 106 s-1. In 2-propanol solutions, they decay predominantly through protonation by the solvent, forming neutral hydrogenated radicals (4R-SQH•), which are characterized by weak absorption bands with λmax = 480-490 nm. Being oxygen-insensitive, the radical cations (4R-SQ•+) are characterized by a strong absorption with λmax = 450-630 nm, depending on the substituent (R). They are formed in a charge-transfer reaction between a radical cation derived from acetonitrile (ACN•+) and substituted 3-styryl-quinoxalin-2-one derivatives (4R-SQ) with a pseudo-first-order rate constant k = (2.7-4.7) × 105 s-1 measured in solutions containing 0.1 mM 4R-3-SQ. The Hammett equation plot gave a very small negative slope (ρ = -0.08), indicating a very weak influence of the substituents in the benzene ring on the rate of charge-transfer reaction. The decay of 4R-SQ•+ in Ar-saturated acetonitrile solutions occurs with a pseudo-first-order rate constant k = (1.6-6.2) × 104 s-1 and, in principle, is not affected by the presence of O2, suggesting charge-spin delocalization over the whole 3-SQ molecule. Most of the radiolytically generated transient spectra are reasonably well-reproduced by semiempirical PM3-ZINDO/S (for 4R-SQ•-) and density functional theory quantum mechanics calculations employing M06-2x hybrid functional together with the def2-TZVP basis set (for 4R-SQ•+).
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Affiliation(s)
- Konrad Skotnicki
- Institute of Nuclear Chemistry and Technology , 03-195 Warsaw , Poland
| | - Julio R De la Fuente
- Departamento de Química Orgánica y Fisicoquímica, Facultad de Ciencias Químicas y Farmacéuticas , Universidad de Chile , Casilla 223 , Santiago 1 8380492 , Chile
| | - Álvaro Cañete
- Departamento de Química Orgánica, Facultad de Química , Pontificia Universidad Católica de Chile , Casilla 306, Correo 22 , Santiago 7820436 , Chile
| | - Eduardo Berrios
- Departamento de Química Orgánica y Fisicoquímica, Facultad de Ciencias Químicas y Farmacéuticas , Universidad de Chile , Casilla 223 , Santiago 1 8380492 , Chile
| | - Krzysztof Bobrowski
- Institute of Nuclear Chemistry and Technology , 03-195 Warsaw , Poland.,Notre Dame Radiation Laboratory , University of Notre Dame , Notre Dame , Indiana 46556 , United States
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3
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Ghazanfarpour-Darjani M, Barat-Seftejani F, Khalaj M, Mousavi-Safavi SM. Synthesis of N
-alkyl-N
′-aryl or Alkenylpiperazines: A Copper-Catalyzed C-N Cross-Coupling in the Presence of Aryl and Alkenyl Triflates and DABCO. Helv Chim Acta 2017. [DOI: 10.1002/hlca.201700082] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Majid Ghazanfarpour-Darjani
- Young Researchers and Elite Club; Islamic Azad University; P.O. Box 14115-175 Buin Zahra Branch Buin Zahra Iran
| | - Forugh Barat-Seftejani
- Young Researchers and Elite Club; Islamic Azad University; P.O. Box 14115-175 Buin Zahra Branch Buin Zahra Iran
| | - Mehdi Khalaj
- Young Researchers and Elite Club; Islamic Azad University; P.O. Box 14115-175 Buin Zahra Branch Buin Zahra Iran
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4
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Smaill JB, Gonzales AJ, Spicer JA, Lee H, Reed JE, Sexton K, Althaus IW, Zhu T, Black SL, Blaser A, Denny WA, Ellis PA, Fakhoury S, Harvey PJ, Hook K, McCarthy FOJ, Palmer BD, Rivault F, Schlosser K, Ellis T, Thompson AM, Trachet E, Winters RT, Tecle H, Bridges A. Tyrosine Kinase Inhibitors. 20. Optimization of Substituted Quinazoline and Pyrido[3,4-d]pyrimidine Derivatives as Orally Active, Irreversible Inhibitors of the Epidermal Growth Factor Receptor Family. J Med Chem 2016; 59:8103-24. [DOI: 10.1021/acs.jmedchem.6b00883] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Jeff B. Smaill
- Auckland
Cancer Society Research Centre, School of Medical Sciences, The University of Auckland, Private Bag 92019, Auckland 1142, New Zealand
- Maurice
Wilkins Centre for Molecular Biodiscovery, The University of Auckland, Private Bag 92019, Auckland 1142, New Zealand
| | - Andrea J. Gonzales
- Pfizer
Global Research and Development, Michigan Laboratories, 2800 Plymouth
Road, Ann Arbor, Michigan 48105-1047, United States
| | - Julie A. Spicer
- Auckland
Cancer Society Research Centre, School of Medical Sciences, The University of Auckland, Private Bag 92019, Auckland 1142, New Zealand
- Maurice
Wilkins Centre for Molecular Biodiscovery, The University of Auckland, Private Bag 92019, Auckland 1142, New Zealand
| | - Helen Lee
- Pfizer
Global Research and Development, Michigan Laboratories, 2800 Plymouth
Road, Ann Arbor, Michigan 48105-1047, United States
| | - Jessica E. Reed
- Pfizer
Global Research and Development, Michigan Laboratories, 2800 Plymouth
Road, Ann Arbor, Michigan 48105-1047, United States
| | - Karen Sexton
- Pfizer
Global Research and Development, Michigan Laboratories, 2800 Plymouth
Road, Ann Arbor, Michigan 48105-1047, United States
| | - Irene W. Althaus
- Pfizer
Global Research and Development, Michigan Laboratories, 2800 Plymouth
Road, Ann Arbor, Michigan 48105-1047, United States
| | - Tong Zhu
- Pfizer
Global Research and Development, Michigan Laboratories, 2800 Plymouth
Road, Ann Arbor, Michigan 48105-1047, United States
| | - Shannon L. Black
- Auckland
Cancer Society Research Centre, School of Medical Sciences, The University of Auckland, Private Bag 92019, Auckland 1142, New Zealand
| | - Adrian Blaser
- Auckland
Cancer Society Research Centre, School of Medical Sciences, The University of Auckland, Private Bag 92019, Auckland 1142, New Zealand
| | - William A. Denny
- Auckland
Cancer Society Research Centre, School of Medical Sciences, The University of Auckland, Private Bag 92019, Auckland 1142, New Zealand
- Maurice
Wilkins Centre for Molecular Biodiscovery, The University of Auckland, Private Bag 92019, Auckland 1142, New Zealand
| | - Paul A. Ellis
- Pfizer
Global Research and Development, Michigan Laboratories, 2800 Plymouth
Road, Ann Arbor, Michigan 48105-1047, United States
| | - Stephen Fakhoury
- Pfizer
Global Research and Development, Michigan Laboratories, 2800 Plymouth
Road, Ann Arbor, Michigan 48105-1047, United States
| | - Patricia J. Harvey
- Pfizer
Global Research and Development, Michigan Laboratories, 2800 Plymouth
Road, Ann Arbor, Michigan 48105-1047, United States
| | - Ken Hook
- Pfizer
Global Research and Development, Michigan Laboratories, 2800 Plymouth
Road, Ann Arbor, Michigan 48105-1047, United States
| | - Florence O. J. McCarthy
- Auckland
Cancer Society Research Centre, School of Medical Sciences, The University of Auckland, Private Bag 92019, Auckland 1142, New Zealand
| | - Brian D. Palmer
- Auckland
Cancer Society Research Centre, School of Medical Sciences, The University of Auckland, Private Bag 92019, Auckland 1142, New Zealand
- Maurice
Wilkins Centre for Molecular Biodiscovery, The University of Auckland, Private Bag 92019, Auckland 1142, New Zealand
| | - Freddy Rivault
- Auckland
Cancer Society Research Centre, School of Medical Sciences, The University of Auckland, Private Bag 92019, Auckland 1142, New Zealand
| | - Kevin Schlosser
- Pfizer
Global Research and Development, Michigan Laboratories, 2800 Plymouth
Road, Ann Arbor, Michigan 48105-1047, United States
| | - Teresa Ellis
- Pfizer
Global Research and Development, Michigan Laboratories, 2800 Plymouth
Road, Ann Arbor, Michigan 48105-1047, United States
| | - Andrew M. Thompson
- Auckland
Cancer Society Research Centre, School of Medical Sciences, The University of Auckland, Private Bag 92019, Auckland 1142, New Zealand
| | - Erin Trachet
- Pfizer
Global Research and Development, Michigan Laboratories, 2800 Plymouth
Road, Ann Arbor, Michigan 48105-1047, United States
| | - R. Thomas Winters
- Pfizer
Global Research and Development, Michigan Laboratories, 2800 Plymouth
Road, Ann Arbor, Michigan 48105-1047, United States
| | - Haile Tecle
- Pfizer
Global Research and Development, Michigan Laboratories, 2800 Plymouth
Road, Ann Arbor, Michigan 48105-1047, United States
| | - Alexander Bridges
- Pfizer
Global Research and Development, Michigan Laboratories, 2800 Plymouth
Road, Ann Arbor, Michigan 48105-1047, United States
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5
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Walton JC. Synthetic Strategies for 5- and 6-Membered Ring Azaheterocycles Facilitated by Iminyl Radicals. Molecules 2016; 21:molecules21050660. [PMID: 27213311 PMCID: PMC6273063 DOI: 10.3390/molecules21050660] [Citation(s) in RCA: 52] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2016] [Revised: 05/11/2016] [Accepted: 05/16/2016] [Indexed: 01/09/2023] Open
Abstract
The totality of chemical space is so immense that only a small fraction can ever be explored. Computational searching has indicated that bioactivity is associated with a comparatively small number of ring-containing structures. Pyrrole, indole, pyridine, quinoline, quinazoline and related 6-membered ring-containing aza-arenes figure prominently. This review focuses on the search for fast, efficient and environmentally friendly preparative methods for these rings with specific emphasis on iminyl radical-mediated procedures. Oxime derivatives, particularly oxime esters and oxime ethers, are attractive precursors for these radicals. Their use is described in conventional thermolytic, microwave-assisted and UV-vis based preparative procedures. Photoredox-catalyzed protocols involving designer oxime ethers are also covered. Choice can be made amongst these synthetic strategies for a wide variety of 5- and 6-membered ring heterocycles including phenanthridine and related aza-arenes. Applications to selected natural products and bioactive molecules, including trispheridine, vasconine, luotonin A and rutaecarpine, are included.
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Affiliation(s)
- John C Walton
- University of St. Andrews, EaStCHEM School of Chemistry, St. Andrews, Fife KY16 9ST, UK.
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6
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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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7
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Khalaj M, Ghazanfarpour-Darjani M, Talei Bavil Olyai MR, Shamami SF. Palladium nanoparticles as reusable catalyst for the synthesis of N-aryl sulfonamides under mild reaction conditions. J Sulphur Chem 2016. [DOI: 10.1080/17415993.2015.1122010] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Mehdi Khalaj
- Department of Chemistry, Buinzahra Branch, Islamic Azad University, Buinzahra, Iran
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8
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Chen LH, Kao CH, Dhole S, Barve IJ, Shen LC, Chung WS, Sun CM. Regioselective synthesis of imidazo[1,5-a]quinoxalines and methyl N-phenylbenzimidats on an ionic liquid support. RSC Adv 2016. [DOI: 10.1039/c6ra11861e] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
An ionic liquid supported synthesis of imidazo[1,5-a]quinoxalines and methyl N-phenylbenzimidats was explored to generate polycyclic imidazo[1,5-a]quinoxalines and methyl N-phenylbenzimidats during the cleavage of the support.
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Affiliation(s)
- Li-Hsun Chen
- Department of Applied Chemistry
- National Chiao Tung University
- Hsinchu 300-10
- ROC
| | - Chih-Hsien Kao
- Department of Applied Chemistry
- National Chiao Tung University
- Hsinchu 300-10
- ROC
| | - Sandip Dhole
- Department of Applied Chemistry
- National Chiao Tung University
- Hsinchu 300-10
- ROC
| | - Indrajeet J. Barve
- Department of Applied Chemistry
- National Chiao Tung University
- Hsinchu 300-10
- ROC
| | - Li-Ching Shen
- Department of Applied Chemistry
- National Chiao Tung University
- Hsinchu 300-10
- ROC
| | - Wen-Sheng Chung
- Department of Applied Chemistry
- National Chiao Tung University
- Hsinchu 300-10
- ROC
| | - Chung-Ming Sun
- Department of Applied Chemistry
- National Chiao Tung University
- Hsinchu 300-10
- ROC
- Department of Medicinal and Applied Chemistry
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9
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Singh P, Samanta K, Das SK, Panda G. Amino acid chirons: a tool for asymmetric synthesis of heterocycles. Org Biomol Chem 2015; 12:6297-339. [PMID: 24989176 DOI: 10.1039/c4ob00943f] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
As a result of their easy availability in enantiomerically enriched form and their possession of synthetically transformable diverse functional groups, amino acids have been extensively used by synthetic organic and medicinal chemists as a chiral pool for access to heterocycles (monocycles, bicycles or polycycles, either bridged or fused). This review describes the syntheses of diverse asymmetric heterocycles with various membered rings (n = 3-9) followed by benzo or heteroannulated ones, for the period from 1996 to Dec. 2013. It details solution phase synthetic methodologies in which the naturally occurring α-amino acid is incorporated, totally or partially, into the final product.
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Affiliation(s)
- Priyanka Singh
- Medicinal and Process Chemistry Division, CSIR-Central Drug Research Institute, B.S. 10/1, Jankipuram Extension, Sitapur Road, Lucknow 226031, India.
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10
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Mamedov VA, Zhukova NA, Beschastnova TN, Syakaev VV, Krivolapov DB, Mironova EV, Zamaletdinova AI, Rizvanov IK, Latypov SK. Rearrangement of Quinoxalin-2-ones When Exposed to Enamines Generated in Situ from Ketones and Ammonium Acetate: Method for the Synthesis of 1-(Pyrrolyl)benzimidazolones. J Org Chem 2015; 80:1375-86. [DOI: 10.1021/jo502135d] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Vakhid A. Mamedov
- A.
E. Arbuzov Institute of Organic and Physical Chemistry, Kazan Scientific Center of the Russian Academy of Sciences, Arbuzov str.
8, 420088 Kazan, Russian Federation
- Kazan National Research Technological University, Karl Marx str. 68, 420015 Kazan, Russian Federation
| | - Nataliya A. Zhukova
- A.
E. Arbuzov Institute of Organic and Physical Chemistry, Kazan Scientific Center of the Russian Academy of Sciences, Arbuzov str.
8, 420088 Kazan, Russian Federation
- Kazan National Research Technological University, Karl Marx str. 68, 420015 Kazan, Russian Federation
| | - Tat’yana N. Beschastnova
- A.
E. Arbuzov Institute of Organic and Physical Chemistry, Kazan Scientific Center of the Russian Academy of Sciences, Arbuzov str.
8, 420088 Kazan, Russian Federation
| | - Victor V. Syakaev
- A.
E. Arbuzov Institute of Organic and Physical Chemistry, Kazan Scientific Center of the Russian Academy of Sciences, Arbuzov str.
8, 420088 Kazan, Russian Federation
| | - Dmitry B. Krivolapov
- A.
E. Arbuzov Institute of Organic and Physical Chemistry, Kazan Scientific Center of the Russian Academy of Sciences, Arbuzov str.
8, 420088 Kazan, Russian Federation
| | - Ekaterina V. Mironova
- A.
E. Arbuzov Institute of Organic and Physical Chemistry, Kazan Scientific Center of the Russian Academy of Sciences, Arbuzov str.
8, 420088 Kazan, Russian Federation
| | | | - Il’dar Kh. Rizvanov
- A.
E. Arbuzov Institute of Organic and Physical Chemistry, Kazan Scientific Center of the Russian Academy of Sciences, Arbuzov str.
8, 420088 Kazan, Russian Federation
| | - Shamil K. Latypov
- A.
E. Arbuzov Institute of Organic and Physical Chemistry, Kazan Scientific Center of the Russian Academy of Sciences, Arbuzov str.
8, 420088 Kazan, Russian Federation
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11
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Mamedov VA, Kalinin AA. Advances in the synthesis of imidazo[1,5-a]- and imidazo[1,2-a]quinoxalines. RUSSIAN CHEMICAL REVIEWS 2014. [DOI: 10.1070/rc2014v083n09abeh004424] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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12
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Yavari I, Bayat MJ, Ghazanfarpour-Darjani M. Synthesis of N-alkyl-N′-aryl-piperazines via copper-catalyzed C–N bond formation. Tetrahedron Lett 2014. [DOI: 10.1016/j.tetlet.2014.08.045] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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13
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Treder AP, Tremblay MC, Yudin AK, Marsault E. Solid-Phase Synthesis of Piperazinones via Disrupted Ugi Condensation. Org Lett 2014; 16:4674-7. [DOI: 10.1021/ol5023118] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Affiliation(s)
- Adam P. Treder
- Département
de Pharmacologie, Institut de Pharmacologie de Sherbrooke, Université de Sherbrooke, Sherbrooke, QC, Canada J1H 5N4
| | - Marie-Claude Tremblay
- Département
de Pharmacologie, Institut de Pharmacologie de Sherbrooke, Université de Sherbrooke, Sherbrooke, QC, Canada J1H 5N4
| | - Andrei K. Yudin
- Department
of Chemistry, University of Toronto, Davenport Building, rm. 362, 80
St. George, Toronto, ON, Canada M5S 3H6
| | - Eric Marsault
- Département
de Pharmacologie, Institut de Pharmacologie de Sherbrooke, Université de Sherbrooke, Sherbrooke, QC, Canada J1H 5N4
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14
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Li ZS, Wang WX, Yang JD, Wu YW, Zhang W. Photoinduced and N-Bromosuccinimide-Mediated Cyclization of 2-Azido-N-phenylacetamides. Org Lett 2013; 15:3820-3. [DOI: 10.1021/ol401338e] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Zhan-Shan Li
- State Key Laboratory of Applied Organic Chemistry and Department of Chemistry, Lanzhou University, Lanzhou 730000, P. R. China
| | - Wei-Xia Wang
- State Key Laboratory of Applied Organic Chemistry and Department of Chemistry, Lanzhou University, Lanzhou 730000, P. R. China
| | - Ji-Dong Yang
- State Key Laboratory of Applied Organic Chemistry and Department of Chemistry, Lanzhou University, Lanzhou 730000, P. R. China
| | - Yue-Wei Wu
- State Key Laboratory of Applied Organic Chemistry and Department of Chemistry, Lanzhou University, Lanzhou 730000, P. R. China
| | - Wei Zhang
- State Key Laboratory of Applied Organic Chemistry and Department of Chemistry, Lanzhou University, Lanzhou 730000, P. R. China
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Kalinin AA, Voloshina AD, Kulik NV, Zobov VV, Mamedov VA. Antimicrobial activity of imidazo[1,5-a]quinoxaline derivatives with pyridinium moiety. Eur J Med Chem 2013; 66:345-54. [PMID: 23811259 DOI: 10.1016/j.ejmech.2013.05.038] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2013] [Revised: 05/08/2013] [Accepted: 05/25/2013] [Indexed: 10/26/2022]
Abstract
3-Phenyl(methyl)-5-alkyl-1-(pyridin-3-yl)imidazo[1,5-a]quinoxalin-4-ones (2a-f) and their N-alkyl-pyridinium salts (3a-o), including 1,n-bis{3-(3-phenylimidazo[1,5-a]quinoxalin-4(5H)-on-1-yl)pyridinium}alkane dibromides (4a-d, 5, 6) have been synthesized. It has been established that the antimicrobial properties of imidazo[1,5-a]quinoxaline derivatives are connected with the presence of various alkyl substituents in the position 1 of the pyridine ring and in the position 5 of the imidazo[1,5-a]quinoxaline system. Chlorides and iodides are more active towards bacteria than fungi. Compounds 3d, 3e, 3m and 3n showed an effective bacteriostatic activity. Compound showed not only well defined bacteriostatic activities but also good fungistatic activities, with the MIC values comparable with the reference drugs. Toxicity of more effective (imidazo[1,5-a]quinoxalin-4-on-1-yl)-1-pyridinium halides was examined in mice.
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Affiliation(s)
- Alexey A Kalinin
- AE Arbuzov Institute of Organic and Physical Chemistry of Russian Academy of Sciences, Arbuzov Str. 8, Kazan 420088, Russian Federation
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16
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Wróbel Z, Stachowska K, Kwast A, Gościk A, Królikiewicz M, Pawłowski R, Turska I. Efficient Synthesis of 1-Arylquinoxalin-2(1H)-onesviaCyclocondensation ofN-Aryl-Substituted 2-Nitrosoanilines with Functionalized Alkyl Acetates. Helv Chim Acta 2013. [DOI: 10.1002/hlca.201200304] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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17
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Manna SK, Panda G. An efficient synthetic approach for N–C bond formation from (S)-amino acids: an easy access to cis-2,5-disubstituted chiral piperazines. RSC Adv 2013. [DOI: 10.1039/c3ra42309c] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
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18
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Hugel S, Kadiri N, Rodeau JL, Gaillard S, Schlichter R. pH-dependent inhibition of native GABA(A) receptors by HEPES. Br J Pharmacol 2012; 166:2402-16. [PMID: 22452286 DOI: 10.1111/j.1476-5381.2012.01956.x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
Abstract
BACKGROUND AND PURPOSE Artificial buffers such as HEPES are extensively used to control extracellular pH (pH(e) ) to investigate the effect of H(+) ions on GABA(A) receptor function. EXPERIMENTAL APPROACH In neurones cultured from spinal cord dorsal horn (DH), dorsal root ganglia (DRG) and cerebellar granule cells (GC) of neonatal rats, we studied the effect of pH(e) on currents induced by GABA(A) receptor agonists, controlling pH(e) with HCO(3) (-) or different concentrations of HEPES. KEY RESULTS Changing HEPES concentration from 1 to 20 mM at constant pH(e) strongly inhibited the currents induced by submaximal GABA applications, but not those induced by glycine or glutamate, on DH, DRG or GC neurones, increasing twofold the EC(50) for GABA in DH neurones and GC. Submaximal GABA(A) receptor-mediated currents were also inhibited by piperazine-N,N'-bis(2-ethanesulfonic acid) (PIPES), 3-(N-morpholino)propanesulfonic acid, tris(hydroxymethyl)aminomethane or imidazole. PIPES and HEPES, both piperazine derivatives, similarly inhibited GABA(A) receptors, whereas the other buffers had weaker effects and 2-(N-morpholino)ethanesulfonic acid had no effect. HEPES-induced inhibition of submaximal GABA(A) receptor-mediated currents was unaffected by diethylpyrocarbonate, a histidine-modifying reagent. HEPES-induced inhibition of GABA(A) receptors was independent of membrane potential, HCO(3) (-) and intracellular Cl(-) concentration and was not modified by flumazenil, which blocks the benzodiazepine binding site. However, it strongly depended on pH(e) . CONCLUSIONS AND IMPLICATIONS Inhibition of GABA(A) receptors by HEPES depended on pH(e) , leading to an apparent H(+) -induced inhibition of DH GABA(A) receptors, unrelated to the pH sensitivity of these receptors in both low and physiological buffering conditions, suggesting that protonated HEPES caused this inhibition.
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Affiliation(s)
- S Hugel
- Nociception et Douleur, INCI, UPR3212 CNRS, Université de Strasbourg, Strasbourg, France.
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19
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An efficient entry to highly substituted chiral 2-oxopiperazines from α-amino acids via iodocyclization. Tetrahedron 2012. [DOI: 10.1016/j.tet.2012.09.109] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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20
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Abstract
This article offers a broad assessment of the hormetic dose response and its relevance to biomedical researchers, physicians, the pharmaceutical industry, and public health scientists. This article contains a series of 61 questions followed by relatively brief but referenced responses that provides support for the conclusion that hormesis is a reproducible phenomenon, commonly observed, with a frequency far greater than other dose-response models such as the threshold and linear nonthreshold dose-response models. The article provides a detailed background information on the historical foundations of hormesis, its quantitative features, mechanistic foundations, as well as how hormesis is currently being used within medicine and identifying how this concept could be further applied in the development of new therapeutic advances and in improved public health practices.
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Affiliation(s)
- E J Calabrese
- Department of Public Health, Environmental Health Sciences, University of Massachusetts, Amherst, MA 01003, USA.
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21
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Samanta K, Panda G. Regioselective ring-opening of amino acid-derived chiral aziridines: an easy access to cis-2,5-disubstituted chiral piperazines. Chem Asian J 2011; 6:189-97. [PMID: 21077094 DOI: 10.1002/asia.201000554] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
An efficient four-step synthetic strategy for cis-2,5-disubstituted chiral piperazines derived from amino-acid-based aziridines is described. The key steps in this strategy are the highly regioselective boron trifluoride diethyl etherate (BF(3)·OEt(2))-mediated ring-opening of less-reactive N-Ts chiral aziridines by α-amino acid methyl ester hydrochloride followed by Mitsunobu cyclization. This protocol has been used in an attempt to construct the piperazine core framework of natural product (+)-piperazinomycin.
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Affiliation(s)
- Krishnananda Samanta
- Division of Medicinal and Process Chemistry, Central Drug Research Institute, Lucknow-226001, UP, India
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22
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Mondieig D, Negrier P, Massip S, Leger JM, Jarmoumi C, Lakhrissi B. Crystal structures of 3-methyl-2(1H
)-quinoxalinone and three substituted derivatives. J PHYS ORG CHEM 2011. [DOI: 10.1002/poc.1846] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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23
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Chen D, Wang ZJ, Bao W. Copper-Catalyzed Cascade Syntheses of 2H-benzo[b][1,4]thiazin-3(4H)-ones and Quinoxalin-2(1H)-ones through Capturing S and N Atom Respectively from AcSH and TsNH2. J Org Chem 2010; 75:5768-71. [DOI: 10.1021/jo101253a] [Citation(s) in RCA: 63] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Dingben Chen
- Department of Chemistry, Zhejiang University, Xi Xi Campus, Hangzhou 310028, Zhejiang, People's Republic of China
- College of Pharmaceutical and Chemical Engineering, Taizhou University, Linhai 317000, Zhejiang, People's Republic of China
| | - Zhi-Jing Wang
- Department of Chemistry, Zhejiang University, Xi Xi Campus, Hangzhou 310028, Zhejiang, People's Republic of China
| | - Weiliang Bao
- Department of Chemistry, Zhejiang University, Xi Xi Campus, Hangzhou 310028, Zhejiang, People's Republic of China
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24
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Gulevich AV, Zhdanko AG, Orru RVA, Nenajdenko VG. Isocyanoacetate Derivatives: Synthesis, Reactivity, and Application. Chem Rev 2010; 110:5235-331. [DOI: 10.1021/cr900411f] [Citation(s) in RCA: 470] [Impact Index Per Article: 33.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Anton V. Gulevich
- Department of Chemistry, Moscow State University, Leninskie Gory, Moscow 119991, Russia, and Department of Chemistry and Pharmaceutical Sciences, Vrije Universiteit Amsterdam, De Boelelaan 1083, 1081 HV Amsterdam, The Netherlands
| | - Alexander G. Zhdanko
- Department of Chemistry, Moscow State University, Leninskie Gory, Moscow 119991, Russia, and Department of Chemistry and Pharmaceutical Sciences, Vrije Universiteit Amsterdam, De Boelelaan 1083, 1081 HV Amsterdam, The Netherlands
| | - Romano V. A. Orru
- Department of Chemistry, Moscow State University, Leninskie Gory, Moscow 119991, Russia, and Department of Chemistry and Pharmaceutical Sciences, Vrije Universiteit Amsterdam, De Boelelaan 1083, 1081 HV Amsterdam, The Netherlands
| | - Valentine G. Nenajdenko
- Department of Chemistry, Moscow State University, Leninskie Gory, Moscow 119991, Russia, and Department of Chemistry and Pharmaceutical Sciences, Vrije Universiteit Amsterdam, De Boelelaan 1083, 1081 HV Amsterdam, The Netherlands
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25
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Abstract
This paper summarizes numerous conceptual and experimental advances over the past two decades in the study of hormesis. Hormesis is now generally accepted as a real and reproducible biological phenomenon, being highly generalized and independent of biological model, endpoint measured and chemical class/physical stressor. The quantitative features of the hormetic dose response are generally highly consistent, regardless of the model and mechanism, and represent a quantitative index of biological plasticity at multiple levels of biological organization. The hormetic dose-response model has been demonstrated to make far more accurate predictions of responses in low dose zones than either the threshold or linear at low dose models. Numerous therapeutic agents widely used by humans are based on the hormetic dose response and its low dose stimulatory characteristics. It is expected that as low dose responses come to dominate toxicological research that risk assessment practices will incorporate hormetic concepts in the standard setting process.
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Affiliation(s)
- Edward J Calabrese
- Department of Public Health, Environmental Health Sciences Division, University of Massachusetts, Amherst, MA, USA.
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26
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Chen D, Bao W. An Efficient Domino Synthesis of Quinoxalin-2(1H)-ones via an SNAr/Coupling/Demesylation Reaction Catalyzed by Copper(I) as Key Step. Adv Synth Catal 2010. [DOI: 10.1002/adsc.200900859] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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27
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28
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Mamedov VA, Kalinin AA, Balandina AA, Rizvanov IK, Latypov SK. An efficient method for the synthesis of imidazo[1,5-a]quinoxalines from 3-acylquinoxalinones and benzylamines via a novel imidazoannulation. Tetrahedron 2009. [DOI: 10.1016/j.tet.2009.08.081] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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29
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Ottesen LK, Olsen CA, Witt M, Jaroszewski JW, Franzyk H. Selectively N-protected enantiopure 2,5-disubstituted piperazines: avoiding the pitfalls in solid-phase Fukuyama-Mitsunobu cyclizations. Chemistry 2009; 15:2966-78. [PMID: 19191236 DOI: 10.1002/chem.200802044] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
An efficient solid-phase route to ring-substituted piperazines from O-linked resin-bound (S)-aziridine-2-methanol is described. Regioselective microwave-assisted aminolysis followed by intramolecular Fukuyama-Mitsunobu cyclization constitute the key features of the protocol. Simple piperazines and diazepanes were readily obtained without preceding N-protection of the acyclic intermediate, whereas attempts to extend this protocol to chiral 2,5-disubstituted piperazines failed. Modifications encompassing N-carbamoylation prior to ring-closure were therefore investigated. However, standard carbamoylating agents, for example, Fmoc-Cl and Alloc-Cl tended to give bis-protected by-products. Thus, novel microwave-assisted solid-phase N-protection procedures were developed for efficient introduction of Fmoc, Boc and Alloc groups. The subsequent cyclization proceeded in moderate to excellent yields depending on the bulk of the side chain and type of N-protecting group. This protocol readily provided novel cis- and trans-2,5-disubstituted piperazines displaying a variety of N-protecting group patterns after further on-resin manipulations. Also, unexpected by-products obtained during these optimization studies were identified and characterized. This includes nosylated ureas arising from an alternative cyclization pathway. Finally, post-cleavage oxidation gave access to the Fmoc/Boc-protected alpha-amino acid as well as the corresponding aldehyde. The chiral piperazines described in this work will enable construction of combinatorial libraries with a higher chemical diversity compared to those containing simple N,N'-difunctionalized piperazines, often present in drug-like compounds.
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Affiliation(s)
- Lars K Ottesen
- Department of Medicinal Chemistry, Faculty of Pharmaceutical Sciences, University of Copenhagen, Universitetsparken 2, 2100 Copenhagen, Denmark
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30
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Calabrese EJ. An Assessment of Anxiolytic Drug Screening Tests: Hormetic Dose Responses Predominate. Crit Rev Toxicol 2008; 38:489-542. [DOI: 10.1080/10408440802014238] [Citation(s) in RCA: 87] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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31
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Kalinin AA, Mamedov VA. Polyfused nitrogen heterocycles: XIX. Oxidative imidazo-fusion of 3-benzoylquinoxalin-2-ones with benzylamines in the synthesis of bis(imidazo[1,5-a]quinoxalin-1- and -5-yl) derivatives. RUSSIAN JOURNAL OF ORGANIC CHEMISTRY 2008. [DOI: 10.1134/s1070428008050187] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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32
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Lewis RA, Pickett SD, Clark DE. Computer-Aided Molecular Diversity Analysis and Combinatorial Library Design. REVIEWS IN COMPUTATIONAL CHEMISTRY 2007. [DOI: 10.1002/9780470125939.ch1] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/11/2023]
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33
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Balandina AA, Mamedov VA, Khafizova EA, Latypov SK. Combined application of 2D NMR correlation methods and ab initio chemical shift calculations to the structure determination of new heterocyclic compounds. Russ Chem Bull 2006. [DOI: 10.1007/s11172-006-0580-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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34
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García MB, Orelli LR, Perillo IA. Chemical properties of pyrimidoquinoxaline 6-oxides. J Heterocycl Chem 2006. [DOI: 10.1002/jhet.5570430644] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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35
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Richards S, Sorensen B, Jae HS, Winn M, Chen Y, Wang J, Fung S, Monzon K, Frevert EU, Jacobson P, Sham H, Link JT. Discovery of potent and selective inhibitors of 11beta-HSD1 for the treatment of metabolic syndrome. Bioorg Med Chem Lett 2006; 16:6241-5. [PMID: 17000111 DOI: 10.1016/j.bmcl.2006.09.035] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2006] [Revised: 09/04/2006] [Accepted: 09/07/2006] [Indexed: 10/24/2022]
Abstract
High throughput screening efforts have identified a novel class of dichloroaniline amide 11beta-HSD1 inhibitors. SAR studies initiated from dichloroaniline 4 focused on retaining the potency and selectivity profile of the lead.
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Affiliation(s)
- Steven Richards
- Metabolic Disease Research, GPRD, Abbott Laboratories, 100 Abbott Park Rd., Abbott Park, IL 60064, USA.
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36
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Kou BB, Zhang F, Yang TM, Liu G. Simultaneous Solid-Phase Synthesis of Quinoxalinone and Benzimidazole Scaffold Libraries. ACTA ACUST UNITED AC 2006; 8:841-7. [PMID: 17096573 DOI: 10.1021/cc060074s] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
This article describes a method for simultaneous solid-phase synthesis of a quinoxalinone and benzimidazole scaffold library that consists of 240 members. The library was generated by using the solid-phase "split-and-pool" approach and the IRORI sorting system.
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Affiliation(s)
- Bin-Bin Kou
- Institute of Materia Medica, Chinese Academy of Medical Sciences & Peking Union Medical College, 1 Xian Nong Tan Street, Beijing 100050, PR China
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37
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Balandina A, Saifina D, Mamedov V, Latypov S. Application of theoretically computed chemical shifts to structure determination of novel heterocyclic compounds. J Mol Struct 2006. [DOI: 10.1016/j.molstruc.2006.01.008] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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38
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Voight EA, Bodenstein MS, Ikemoto N, Kress MH. Efficient preparation of chiral diamines via Red-Al reduction of N-Boc-protected amino acid-derived secondary amides. Tetrahedron Lett 2006. [DOI: 10.1016/j.tetlet.2006.01.056] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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39
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R. Biehl E, Kamila S. Synthetic Studies of Bioactive Quinoxalinones: A Facile Approach to Potent Euglycemic and Hypolipidemic Agents. HETEROCYCLES 2006. [DOI: 10.3987/com-06-10793] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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40
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Balandina A, Kalinin A, Mamedov V, Figadère B, Latypov S. Structure-NMR chemical shift relationships for novel functionalized derivatives of quinoxalines. MAGNETIC RESONANCE IN CHEMISTRY : MRC 2005; 43:816-28. [PMID: 16041772 DOI: 10.1002/mrc.1612] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
(1)H, (13)C and (15)N NMR chemical shifts for a variety of novel quinoxalines were determined by different 2D methods and were calculated using the GIAO DFT approach. Comparison with experimental data shows good correlations in the case of (1)H, (13)C and (15)N chemical shifts. Different combinations of basis sets were tested. In non-polar solvents quinoxalines exist as dimers owing to strong hydrogen bonding. Calculations for dimers improve the correlation between experiment and theory. Additive empirical methods for estimating chemical shifts have drawbacks and have to be used with a great care for this type of compound.
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Affiliation(s)
- Alsu Balandina
- Institute of Organic and Physical Chemistry, Arbuzov str. 8, Kazan 420008, Russia
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41
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Kieć-Kononowicz K, Karolak-Wojciechowska J, Michalak B, Pekala E, Schumacher B, Müller CE. Imidazo[2,1-b]thiazepines: synthesis, structure and evaluation of benzodiazepine receptor binding. Eur J Med Chem 2004; 39:205-18. [PMID: 15051168 DOI: 10.1016/j.ejmech.2003.11.009] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2001] [Revised: 11/10/2003] [Accepted: 11/14/2003] [Indexed: 10/26/2022]
Abstract
As a continuation of our search for new ligands acting on benzodiazepine receptors among the fused 2-thiohydantoin derivatives, a series of 5-substituted imidazo[2,1-b]thiazepines was synthesized and investigated in radioligand binding studies at the benzodiazepine binding site of GABA(A) receptors in rat brain cortical membranes. Among ortho-substituted 5-arylidene-imidazo[2,1-b]thiazepines compounds could be identified which exhibit affinity for the benzodiazepine binding site at low micromolar concentrations. X-ray structure analyses for two compounds (6ae and 6ag) have been performed. In order to analyze the structure-activity relationships, 3D models of all compounds have been completed (using X-ray data). Physicochemical properties calculated (log P and log D) as well as experimental thin layer chromatography data were examined.
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Affiliation(s)
- Katarzyna Kieć-Kononowicz
- Department of Chemical Technology of Drugs, Jagiellonian University Medical College, ul Medyczna 9, PL 30-688 Kraków, Poland.
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42
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Balandina A, Mamedov V, Franck X, Figadère B, Latypov S. Application of quantum chemical calculations of 13 C NMR chemical shifts to quinoxaline structure determination. Tetrahedron Lett 2004. [DOI: 10.1016/j.tetlet.2004.03.182] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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43
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44
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Horton DA, Bourne GT, Smythe ML. The combinatorial synthesis of bicyclic privileged structures or privileged substructures. Chem Rev 2003; 103:893-930. [PMID: 12630855 DOI: 10.1021/cr020033s] [Citation(s) in RCA: 2443] [Impact Index Per Article: 116.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Douglas A Horton
- Institute for Molecular Bioscience, The University of Queensland, St. Lucia, 4072 Queensland, Australia
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45
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Bräse S, Gil C, Knepper K. The recent impact of solid-phase synthesis on medicinally relevant benzoannelated nitrogen heterocycles. Bioorg Med Chem 2002; 10:2415-37. [PMID: 12057632 DOI: 10.1016/s0968-0896(02)00025-1] [Citation(s) in RCA: 241] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Benzoannelated heterocycles such as benzodiazepines and indoles can be prepared efficiently through cyclization on solid supports, although no single approach is currently universal for the preparation of all benzoannelated N-heterocycle chemistries. In this review, a number of synthetic strategies for the generation of benzoannelated nitrogen heterocycles using resin-bound substrates have been described. Classical heterocycle forming reactions such as the Fischer indole, the Bischler-Napieralski tetrahydroisoquinoline, the Pictet-Spengler tetrahydro-beta-carboline, the Tsuge, the Nenitzescu and the Richter cinnoline reaction are presented. In addition, the Heck, Sonogashira, Wittig, Diels-Alder, and olefin metathesis reactions have been also used. Multicomponent reactions such as the Grieco three-component assembly have been exploited for the synthesis of heterocycles. Cyclative cleavage from the solid support is particularly suitable for the synthesis of heterocycles while particular emphasis has been focused on the synthesis of libraries and the use of combinatorial chemistry techniques. In addition, the most relevant pharmacological properties of benzoannelated nitrogen heterocycles are included.
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Affiliation(s)
- Stefan Bräse
- Kekulé-Institut für Organische Chemie und Biochemie der Rheinischen Friedrich-Wilhelms-Universität Bonn, Gerhard-Domagk-Strasse 1, D-53121 Bonn, Germany.
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46
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Kieć-Kononowicz K, Karolak-Wojciechowska J, Müller CE, Schumacher B, Pekala E, Szymańska E. Imidazo-thiazine, -diazinone and -diazepinone derivatives. Synthesis, structure and benzodiazepine receptor binding. Eur J Med Chem 2001; 36:407-19. [PMID: 11451530 DOI: 10.1016/s0223-5234(01)01239-9] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
In our search for new compounds acting on benzodiazepine receptors among the fused 2-thiohydantoin derivatives, a series of arylidene imidazo[2,1-b]thiazines was synthesized. The 1,2- and 2,3- cyclized derivatives of mono- and di-substituted Z-5-arylidene-2-thiohydantoins were examined (the X-ray crystal structure of Z-2-cinnamylidene-6,7-dihydro-5H-imidazo[2,1-b][1,3]thiazin-3(2H)-one was determined) and compared with the diphenyl derivatives. To investigate the influence of the type of annelated ring on the biological activity, imidazo[2,1-b]pyrimidinone and imidazo[2,1-b]diazepinone derivatives were obtained. The method used in annelation (1,2- and 2,3-cyclized isomers with the exception of fused arylidene imidazothiazines), the substitution pattern (arylidene towards diphenyl) as well as the character of the annelated ring had minor influence on the benzodiazepine receptor affinity of the investigated compounds. It appears that the greatest influence on the biological activity has the character and position of the substituents on the arylidene ring.
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Affiliation(s)
- K Kieć-Kononowicz
- Department of Chemical Technology of Drugs, Faculty of Pharmacy, Jagiellonian University Medical College, Medyczna 9, PL-30-688 Kraków, Poland.
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Wang T, Zhang Z, Meanwell NA. Regioselective monobenzoylation of unsymmetrical piperazines. J Org Chem 2000; 65:4740-2. [PMID: 10959885 DOI: 10.1021/jo000005e] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- T Wang
- Bristol-Myers Squibb Pharmaceutical Research Institute, Wallingford, Connecticut 06492, USA.
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