1
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Synthesis of hybrid phosphorated indenoquinolines and biological evaluation as topoisomerase I inhibitors and antiproliferative agents. Bioorg Med Chem Lett 2021; 57:128517. [PMID: 34952177 DOI: 10.1016/j.bmcl.2021.128517] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2021] [Revised: 12/14/2021] [Accepted: 12/15/2021] [Indexed: 01/28/2023]
Abstract
This work describes the first synthesis of diethyl 6,6a,7,11b-tetrahydro-5H-indeno[2,1-c]quinolinylphosphonates 5, diethyl 7H-indeno[2,1-c]quinolinylphosphonates 6 and diethyl 7-oxo-7H-indeno[2,1-c]quinolinylphosphonates 7, which were prepared in good to high overall yields. The synthetic route involves a multicomponent reaction of 2-phosphonateaniline, aldehydes and indene as olefin and allows the selective generation of three stereogenic centres in a short, efficient and reliable manner. The selective dehydrogenation of 1,2,3,4-tetrahydroindenoquinolines leads to the formation of corresponding indenoquinolines, and subsequent oxidation of methylene group of the indenoquinolines allows the access to indenoquinolinones.
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2
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Synthetic Strategies, Reactivity and Applications of 1,5-Naphthyridines. Molecules 2020; 25:molecules25143252. [PMID: 32708796 PMCID: PMC7397193 DOI: 10.3390/molecules25143252] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2020] [Revised: 07/11/2020] [Accepted: 07/15/2020] [Indexed: 11/17/2022] Open
Abstract
This review covers the synthesis and reactivity of 1,5-naphthyridine derivatives published in the last 18 years. These heterocycles present a significant importance in the field of medicinal chemistry because many of them exhibit a great variety of biological activities. First, the published strategies related to the synthesis of 1,5-naphthyridines are presented followed by the reactivity of these compounds with electrophilic or nucleophilic reagents, in oxidations, reductions, cross-coupling reactions, modification of side chains or formation of metal complexes. Finally, some properties and applications of these heterocycles studied during this period are examined.
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3
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Tejería A, Pérez-Pertejo Y, Reguera RM, Carbajo-Andrés R, Balaña-Fouce R, Alonso C, Martin-Encinas E, Selas A, Rubiales G, Palacios F. Antileishmanial activity of new hybrid tetrahydroquinoline and quinoline derivatives with phosphorus substituents. Eur J Med Chem 2018; 162:18-31. [PMID: 30408746 DOI: 10.1016/j.ejmech.2018.10.065] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2018] [Revised: 10/24/2018] [Accepted: 10/29/2018] [Indexed: 12/11/2022]
Abstract
Heterocyclic compounds, such as hybrid tetrahydroquinoline and quinoline derivatives with phosphorated groups, have been prepared by multicomponent cycloaddition reaction between phosphorus-substituted anilines, aldehydes and styrenes. The antileishmanial activity of these compounds has been evaluated on both promastigotes and intramacrophagic amastigotes of Leishmania infantum. Good antileishmanial activity of functionalized tetrahydroquinolines 4a, 5a, 6b and quinoline 8b has been observed with similar activity than the standard drug amphotericin B and close selective index (SI between 43 and 57) towards L. infantum amastigotes to amphotericin B. Special interest shows tetrahydroquinolylphosphine sulfide 5a with an EC50 value (0.61 ± 0.18 μM) similar to the standard drug amphotericin B (0.32 ± 0.05 μM) and selective index (SI = 56.87). In addition, compound 4c shows remarkable inhibition on Leishmania topoisomerase IB. Parallel theoretical study of stereoelectronic properties, application of docking-based virtual screening methods, along with molecular electrostatic potential and predictive druggability analyses are also reported.
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Affiliation(s)
- Ana Tejería
- Departamento de Ciencias Biomédicas, Universidad de León, Campus de Vegazana s/n, 24071, León, Spain
| | - Yolanda Pérez-Pertejo
- Departamento de Ciencias Biomédicas, Universidad de León, Campus de Vegazana s/n, 24071, León, Spain
| | - Rosa M Reguera
- Departamento de Ciencias Biomédicas, Universidad de León, Campus de Vegazana s/n, 24071, León, Spain
| | - Rubén Carbajo-Andrés
- Departamento de Ciencias Biomédicas, Universidad de León, Campus de Vegazana s/n, 24071, León, Spain
| | - Rafael Balaña-Fouce
- Departamento de Ciencias Biomédicas, Universidad de León, Campus de Vegazana s/n, 24071, León, Spain
| | - Concepción Alonso
- Departamento de Química Orgánica I, Facultad de Farmacia and Centro de Investigación Lascaray (Lascaray Research Center), Universidad del País Vasco/Euskal Herriko Unibertsitatea (UPV/EHU), Paseo de la Universidad 7, 01006, Vitoria-Gasteiz, Spain
| | - Endika Martin-Encinas
- Departamento de Química Orgánica I, Facultad de Farmacia and Centro de Investigación Lascaray (Lascaray Research Center), Universidad del País Vasco/Euskal Herriko Unibertsitatea (UPV/EHU), Paseo de la Universidad 7, 01006, Vitoria-Gasteiz, Spain
| | - Asier Selas
- Departamento de Química Orgánica I, Facultad de Farmacia and Centro de Investigación Lascaray (Lascaray Research Center), Universidad del País Vasco/Euskal Herriko Unibertsitatea (UPV/EHU), Paseo de la Universidad 7, 01006, Vitoria-Gasteiz, Spain
| | - Gloria Rubiales
- Departamento de Química Orgánica I, Facultad de Farmacia and Centro de Investigación Lascaray (Lascaray Research Center), Universidad del País Vasco/Euskal Herriko Unibertsitatea (UPV/EHU), Paseo de la Universidad 7, 01006, Vitoria-Gasteiz, Spain
| | - Francisco Palacios
- Departamento de Química Orgánica I, Facultad de Farmacia and Centro de Investigación Lascaray (Lascaray Research Center), Universidad del País Vasco/Euskal Herriko Unibertsitatea (UPV/EHU), Paseo de la Universidad 7, 01006, Vitoria-Gasteiz, Spain.
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Tejería A, Pérez-Pertejo Y, Reguera RM, Balaña-Fouce R, Alonso C, González M, Rubiales G, Palacios F. Substituted 1,5-naphthyridine derivatives as novel antileishmanial agents. Synthesis and biological evaluation. Eur J Med Chem 2018; 152:137-147. [PMID: 29704722 DOI: 10.1016/j.ejmech.2018.04.033] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2018] [Revised: 04/11/2018] [Accepted: 04/16/2018] [Indexed: 10/17/2022]
Abstract
Visceral leishmaniasis is a parasitic disease that affects, among other areas, both sides of the Mediterranean Basin. The drugs classically used in clinical practice are pentavalent antimonials (SbV) and amphotericin B, which are nephrotoxic, require parenteral administration, and increasing drug resistance in visceral leishmaniasis has been observed. These circumstances justify the search of new families of compounds to find effective drugs against the disease. Eukaryotic type I DNA topoisomerase (TopIB) has been found essential for the viability of the parasites, and therefore represents a promising target in the development of an antileishmanial therapy. In this search, heterocyclic compounds, such as 1,5-naphthyridines, have been prepared by cycloaddition reaction between N-(3-pyridyl)aldimines and acetylenes and their antileishmanial activity on promastigotes and amastigote-infected splenocytes of Leishmania infantum has been evaluated. In addition, the cytotoxic effects of newly synthesized compounds were assessed on host murine splenocytes in order to calculate the corresponding selective indexes (SI). Excellent antileishmanial activity of 1,5-naphthyridine 19, 21, 22, 24 and 27 has been observed with similar activity than the standard drug amphotericin B and higher selective index (SI > 100) towards L. infantum amastigotes than amphotericin B (SI > 62.5). Special interest shows the 1,5-naphthyridine 22 with an IC50 value (0.58 ± 0.03 μM) similar to the standard drug amphotericin B (0.32 ± 0.05 μM) and with the highest selective index (SI = 271.5). In addition, this compound shows remarkable inhibition on leishmanial TopIB. However, despite these interesting results, further studies are needed to disclose other potential targets involved in the antileishmanial effect of these novel compounds.
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Affiliation(s)
- Ana Tejería
- Departamento de Ciencias Biomédicas, Universidad de León, Campus de Vegazana s/n, 24071, León, Spain
| | - Yolanda Pérez-Pertejo
- Departamento de Ciencias Biomédicas, Universidad de León, Campus de Vegazana s/n, 24071, León, Spain
| | - Rosa M Reguera
- Departamento de Ciencias Biomédicas, Universidad de León, Campus de Vegazana s/n, 24071, León, Spain
| | - Rafael Balaña-Fouce
- Departamento de Ciencias Biomédicas, Universidad de León, Campus de Vegazana s/n, 24071, León, Spain
| | - Concepción Alonso
- Departamento de Química Orgánica I, Facultad de Farmacia and Centro de Investigación Lascaray (Lascaray Research Center), Universidad del País Vasco/Euskal Herriko Unibertsitatea (UPV/EHU), Paseo de la Universidad 7, 01006, Vitoria-Gasteiz, Spain
| | - María González
- Departamento de Química Orgánica I, Facultad de Farmacia and Centro de Investigación Lascaray (Lascaray Research Center), Universidad del País Vasco/Euskal Herriko Unibertsitatea (UPV/EHU), Paseo de la Universidad 7, 01006, Vitoria-Gasteiz, Spain
| | - Gloria Rubiales
- Departamento de Química Orgánica I, Facultad de Farmacia and Centro de Investigación Lascaray (Lascaray Research Center), Universidad del País Vasco/Euskal Herriko Unibertsitatea (UPV/EHU), Paseo de la Universidad 7, 01006, Vitoria-Gasteiz, Spain
| | - Francisco Palacios
- Departamento de Química Orgánica I, Facultad de Farmacia and Centro de Investigación Lascaray (Lascaray Research Center), Universidad del País Vasco/Euskal Herriko Unibertsitatea (UPV/EHU), Paseo de la Universidad 7, 01006, Vitoria-Gasteiz, Spain.
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5
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Alonso C, Fuertes M, Martín-Encinas E, Selas A, Rubiales G, Tesauro C, Knudssen BK, Palacios F. Novel topoisomerase I inhibitors. Syntheses and biological evaluation of phosphorus substituted quinoline derivates with antiproliferative activity. Eur J Med Chem 2018; 149:225-237. [DOI: 10.1016/j.ejmech.2018.02.058] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2017] [Revised: 02/06/2018] [Accepted: 02/16/2018] [Indexed: 12/31/2022]
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Affiliation(s)
| | - Maryam Zirak
- Department
of Chemistry, Payame Noor University, Tehran 19395-3697, Iran
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7
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Alonso C, González M, Palacios F, Rubiales G. Study of the Hetero-[4+2]-Cycloaddition Reaction of Aldimines and Alkynes. Synthesis of 1,5-Naphthyridine and Isoindolone Derivatives. J Org Chem 2017; 82:6379-6387. [PMID: 28537387 DOI: 10.1021/acs.joc.7b00977] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Both experimental and computational studies for the cycloaddition reaction between N-(3-pyridyl)aldimines and acetylenes where 1,5-naphthyridines are obtained are reported. The reaction of benzaldimine with a methoxycarbonyl group in position 2 with phenyl acetylene, styrene, and indene afforded polycyclic isoindolone derivatives. The mechanism of reaction of N-(3-pyridyl)aldimines with olefins can be explained by an asynchronous [4+2] cycloaddition; in the case of acetylenes, the obtained results suggest a stepwise mechanism through a 3-azatriene.
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Affiliation(s)
- Concepción Alonso
- Departamento de Química Orgánica I, Facultad de Farmacia, Centro de Investigaciones y Estudios Avanzados "Lucio Lascaray", Universidad del País Vasco UPV/EHU , Paseo de la Universidad 7, 01006 Vitoria, Spain
| | - María González
- Departamento de Química Orgánica I, Facultad de Farmacia, Centro de Investigaciones y Estudios Avanzados "Lucio Lascaray", Universidad del País Vasco UPV/EHU , Paseo de la Universidad 7, 01006 Vitoria, Spain
| | - Francisco Palacios
- Departamento de Química Orgánica I, Facultad de Farmacia, Centro de Investigaciones y Estudios Avanzados "Lucio Lascaray", Universidad del País Vasco UPV/EHU , Paseo de la Universidad 7, 01006 Vitoria, Spain
| | - Gloria Rubiales
- Departamento de Química Orgánica I, Facultad de Farmacia, Centro de Investigaciones y Estudios Avanzados "Lucio Lascaray", Universidad del País Vasco UPV/EHU , Paseo de la Universidad 7, 01006 Vitoria, Spain
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8
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Alonso C, Martín-Encinas E, Rubiales G, Palacios F. Reliable Synthesis of Phosphino- and Phosphine Sulfide-1,2,3,4-Tetrahydroquinolines and Phosphine Sulfide Quinolines. European J Org Chem 2017. [DOI: 10.1002/ejoc.201700258] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Concepción Alonso
- Departamento de Química Orgánica I; Facultad de Farmacia and Centro de Investigacion Lascaray (Lascaray Research Center); Universidad del País Vasco/Euskal Herriko Unibertsitatea (UPV/EHU); Paseo de la Universidad 7 01006 Vitoria Spain
| | - Endika Martín-Encinas
- Departamento de Química Orgánica I; Facultad de Farmacia and Centro de Investigacion Lascaray (Lascaray Research Center); Universidad del País Vasco/Euskal Herriko Unibertsitatea (UPV/EHU); Paseo de la Universidad 7 01006 Vitoria Spain
| | - Gloria Rubiales
- Departamento de Química Orgánica I; Facultad de Farmacia and Centro de Investigacion Lascaray (Lascaray Research Center); Universidad del País Vasco/Euskal Herriko Unibertsitatea (UPV/EHU); Paseo de la Universidad 7 01006 Vitoria Spain
| | - Francisco Palacios
- Departamento de Química Orgánica I; Facultad de Farmacia and Centro de Investigacion Lascaray (Lascaray Research Center); Universidad del País Vasco/Euskal Herriko Unibertsitatea (UPV/EHU); Paseo de la Universidad 7 01006 Vitoria Spain
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9
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Andersen MB, Tesauro C, Gonzalez M, Kristoffersen EL, Alonso C, Rubiales G, Coletta A, Frøhlich R, Stougaard M, Ho YP, Palacios F, Knudsen BR. Advantages of an optical nanosensor system for the mechanistic analysis of a novel topoisomerase I targeting drug: a case study. NANOSCALE 2017; 9:1886-1895. [PMID: 28094391 DOI: 10.1039/c6nr06848k] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The continuous need for the development of new small molecule anti-cancer drugs calls for easily accessible sensor systems for measuring the effect of vast numbers of new drugs on their potential cellular targets. Here we demonstrate the use of an optical DNA biosensor to unravel the inhibitory mechanism of a member of a new family of small molecule human topoisomerase I inhibitors, the so-called indeno-1,5-naphthyridines. By analysing human topoisomerase I catalysis on the biosensor in the absence or presence of added drug complemented with a few traditional assays, we demonstrate that the investigated member of the indeno-1,5-naphthyridine family inhibited human topoisomerase I activity by blocking enzyme-DNA dissociation. To our knowledge, this represents the first characterized example of a small molecule drug that inhibits a post-ligation step of catalysis. The elucidation of a completely new and rather surprising drug mechanism-of-action using an optical real time sensor highlights the value of this assay system in the search for new topoisomerase I targeting small molecule drugs.
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Affiliation(s)
- Marie B Andersen
- Department of Molecular Biology and Genetics, C. F. Møllers Allé 3, Bldg 1131, Aarhus University, 8000 Aarhus C, Denmark.
| | - Cinzia Tesauro
- Department of Molecular Biology and Genetics, C. F. Møllers Allé 3, Bldg 1131, Aarhus University, 8000 Aarhus C, Denmark.
| | - María Gonzalez
- Departamento de Química Orgánica I, Facultad de Farmacia and Centro de Investigación Lascaray (Lascaray Research Center), Universidad del País Vasco/Euskal Herriko Unibertsitatea (UPV/EHU), Paseo de la Universidad 7, 01006 Vitoria-Gasteiz, Spain
| | - Emil L Kristoffersen
- Department of Molecular Biology and Genetics, C. F. Møllers Allé 3, Bldg 1131, Aarhus University, 8000 Aarhus C, Denmark.
| | - Concepción Alonso
- Departamento de Química Orgánica I, Facultad de Farmacia and Centro de Investigación Lascaray (Lascaray Research Center), Universidad del País Vasco/Euskal Herriko Unibertsitatea (UPV/EHU), Paseo de la Universidad 7, 01006 Vitoria-Gasteiz, Spain
| | - Gloria Rubiales
- Departamento de Química Orgánica I, Facultad de Farmacia and Centro de Investigación Lascaray (Lascaray Research Center), Universidad del País Vasco/Euskal Herriko Unibertsitatea (UPV/EHU), Paseo de la Universidad 7, 01006 Vitoria-Gasteiz, Spain
| | - Andrea Coletta
- Department of Chemistry, Langelandsgade 140, Aarhus University, 8000 Aarhus C, Denmark
| | - Rikke Frøhlich
- Department of Molecular Biology and Genetics, C. F. Møllers Allé 3, Bldg 1131, Aarhus University, 8000 Aarhus C, Denmark.
| | - Magnus Stougaard
- Department of Pathology, Nørrebrogade 44 building 18B, Aarhus University, Denmark
| | - Yi-Ping Ho
- Department of Molecular Biology and Genetics, C. F. Møllers Allé 3, Bldg 1131, Aarhus University, 8000 Aarhus C, Denmark. and Interdisciplinary Nanoscience Center, Gustav Wieds Vej 14, 8000 Aarhus C, Denmark and Division of Biomedical Engineering, Department of Electronic Engineering, The Chinese University of Hong Kong, Shatin, NT, Hong Kong, China
| | - Francisco Palacios
- Departamento de Química Orgánica I, Facultad de Farmacia and Centro de Investigación Lascaray (Lascaray Research Center), Universidad del País Vasco/Euskal Herriko Unibertsitatea (UPV/EHU), Paseo de la Universidad 7, 01006 Vitoria-Gasteiz, Spain
| | - Birgitta R Knudsen
- Department of Molecular Biology and Genetics, C. F. Møllers Allé 3, Bldg 1131, Aarhus University, 8000 Aarhus C, Denmark.
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10
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Tejería A, Pérez-Pertejo Y, Reguera RM, Balaña-Fouce R, Alonso C, Fuertes M, González M, Rubiales G, Palacios F. Antileishmanial effect of new indeno-1,5-naphthyridines, selective inhibitors of Leishmania infantum type IB DNA topoisomerase. Eur J Med Chem 2016; 124:740-749. [DOI: 10.1016/j.ejmech.2016.09.017] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2016] [Revised: 09/01/2016] [Accepted: 09/06/2016] [Indexed: 12/11/2022]
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11
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Luo YE, He YM, Fan QH. Asymmetric Hydrogenation of Quinoline Derivatives Catalyzed by Cationic Transition Metal Complexes of Chiral Diamine Ligands: Scope, Mechanism and Catalyst Recycling. CHEM REC 2016; 16:2693-2707. [DOI: 10.1002/tcr.201600095] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2016] [Indexed: 11/07/2022]
Affiliation(s)
- Yi-Er Luo
- CAS Key Laboratory for Molecular Recognition and Function, Institute of Chemistry; Chinese Academy of Science (ICCAS); Beijing 100190 P. R. China
- University of Chinese Academy of Sciences; Beijing 100190 P. R. China
| | - Yan-Mei He
- CAS Key Laboratory for Molecular Recognition and Function, Institute of Chemistry; Chinese Academy of Science (ICCAS); Beijing 100190 P. R. China
| | - Qing-Hua Fan
- CAS Key Laboratory for Molecular Recognition and Function, Institute of Chemistry; Chinese Academy of Science (ICCAS); Beijing 100190 P. R. China
- University of Chinese Academy of Sciences; Beijing 100190 P. R. China
- Collaborative Innovation Center of Chemical Science and Engineering; Tianjin 300072 P. R. China
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12
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Alonso C, Fuertes M, González M, Rubiales G, Tesauro C, Knudsen BR, Palacios F. Synthesis and biological evaluation of indeno[1,5]naphthyridines as topoisomerase I (TopI) inhibitors with antiproliferative activity. Eur J Med Chem 2016; 115:179-90. [DOI: 10.1016/j.ejmech.2016.03.031] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2016] [Revised: 03/11/2016] [Accepted: 03/12/2016] [Indexed: 02/07/2023]
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13
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Luo HX, Niu YH, Cao XP, Ye XS. Cyclopropenes for the Synthesis of Cyclopropane-Fused Dihydroquinolines and Benzazepines. Adv Synth Catal 2015. [DOI: 10.1002/adsc.201500203] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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14
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Zhang J, Chen F, He YM, Fan QH. Asymmetric Ruthenium-Catalyzed Hydrogenation of 2,6-Disubstituted 1,5-Naphthyridines: Access to Chiral 1,5-Diaza-cis-Decalins. Angew Chem Int Ed Engl 2015; 54:4622-5. [DOI: 10.1002/anie.201411105] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2014] [Revised: 12/29/2014] [Indexed: 01/30/2023]
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15
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Zhang J, Chen F, He YM, Fan QH. Asymmetric Ruthenium-Catalyzed Hydrogenation of 2,6-Disubstituted 1,5-Naphthyridines: Access to Chiral 1,5-Diaza-cis-Decalins. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201411105] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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16
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Eftekhari-Sis B, Zirak M. Chemistry of α-oxoesters: a powerful tool for the synthesis of heterocycles. Chem Rev 2014; 115:151-264. [PMID: 25423283 DOI: 10.1021/cr5004216] [Citation(s) in RCA: 95] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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17
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Taylor RRR, Batey RA. A Hetero Diels–Alder Approach to the Synthesis of Chromans (3,4-Dihydrobenzopyrans) Using Oxonium Ion Chemistry: The Oxa-Povarov Reaction. J Org Chem 2013; 78:1404-20. [DOI: 10.1021/jo302328s] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Rivka R. R. Taylor
- Davenport Research Laboratories,
Department of Chemistry, University of Toronto, 80 St. George Street, Toronto,
ON, Canada, M5S 3H6
| | - Robert A. Batey
- Davenport Research Laboratories,
Department of Chemistry, University of Toronto, 80 St. George Street, Toronto,
ON, Canada, M5S 3H6
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