1
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Schoeggl Toledano A, Bitai J, Covini D, Karolyi-Oezguer J, Dank C, Berger H, Gollner A. Synthesis of Indazoles via N-N Bond-Forming Oxidative Cyclization from 2-Aminomethyl-phenylamines. Org Lett 2024; 26:1229-1232. [PMID: 38315455 DOI: 10.1021/acs.orglett.4c00036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2024]
Abstract
Herein we report a method for the synthesis of indazoles from readily available 2-aminomethyl-phenylamines via N-N bond-forming oxidative cyclization. Inspired by indazole formation initially observed as a side product by N. Coskun et al. we developed a robust protocol to access indazoles in all three tautomeric forms. The method selectively gives access to various 2-substituted 2H-indazoles which are frequently used in drug design, and we also demonstrated its applicability to less studied 3H-indazoles.
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Affiliation(s)
- Anna Schoeggl Toledano
- Boehringer Ingelheim RCV GmbH & Co KG, Dr. Boehringer-Gasse 5-11, A-1121 Vienna, Austria
| | - Jacqueline Bitai
- Boehringer Ingelheim RCV GmbH & Co KG, Dr. Boehringer-Gasse 5-11, A-1121 Vienna, Austria
| | - David Covini
- Boehringer Ingelheim RCV GmbH & Co KG, Dr. Boehringer-Gasse 5-11, A-1121 Vienna, Austria
| | - Jale Karolyi-Oezguer
- Boehringer Ingelheim RCV GmbH & Co KG, Dr. Boehringer-Gasse 5-11, A-1121 Vienna, Austria
| | - Christian Dank
- Boehringer Ingelheim RCV GmbH & Co KG, Dr. Boehringer-Gasse 5-11, A-1121 Vienna, Austria
| | - Helmut Berger
- Boehringer Ingelheim RCV GmbH & Co KG, Dr. Boehringer-Gasse 5-11, A-1121 Vienna, Austria
| | - Andreas Gollner
- Boehringer Ingelheim RCV GmbH & Co KG, Dr. Boehringer-Gasse 5-11, A-1121 Vienna, Austria
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2
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Hirashita T, Watanabe H, Harada Y, Kurabayashi H, Yukinobu, Yamashita, Oizumi S, Araki S. Palladium‐Catalyzed Selective
o
‐Bromination of Mesoionic 1,3‐Diphenyltetrazolium‐5‐olate: Switching the Directing Group from Nitrogen to Oxygen. ChemistrySelect 2021. [DOI: 10.1002/slct.202103841] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Tsunehisa Hirashita
- Life Science and Applied Chemistry Graduate School of Engineering Nagoya Institute of Technology Gokiso-cho, Showa-ku, Nagoya Aichi 466-8555 Japan
| | - Harue Watanabe
- Life Science and Applied Chemistry Graduate School of Engineering Nagoya Institute of Technology Gokiso-cho, Showa-ku, Nagoya Aichi 466-8555 Japan
| | - Yuki Harada
- Life Science and Applied Chemistry Graduate School of Engineering Nagoya Institute of Technology Gokiso-cho, Showa-ku, Nagoya Aichi 466-8555 Japan
| | - Hideaki Kurabayashi
- Life Science and Applied Chemistry Graduate School of Engineering Nagoya Institute of Technology Gokiso-cho, Showa-ku, Nagoya Aichi 466-8555 Japan
| | - Yukinobu
- Life Science and Applied Chemistry Graduate School of Engineering Nagoya Institute of Technology Gokiso-cho, Showa-ku, Nagoya Aichi 466-8555 Japan
| | - Yamashita
- Life Science and Applied Chemistry Graduate School of Engineering Nagoya Institute of Technology Gokiso-cho, Showa-ku, Nagoya Aichi 466-8555 Japan
| | - Shiyogo Oizumi
- Life Science and Applied Chemistry Graduate School of Engineering Nagoya Institute of Technology Gokiso-cho, Showa-ku, Nagoya Aichi 466-8555 Japan
| | - Shuki Araki
- Life Science and Applied Chemistry Graduate School of Engineering Nagoya Institute of Technology Gokiso-cho, Showa-ku, Nagoya Aichi 466-8555 Japan
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3
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Pérez-Villanueva J, Matadamas-Martínez F, Yépez-Mulia L, Pérez-Koldenkova V, Leyte-Lugo M, Rodríguez-Villar K, Cortés-Benítez F, Macías-Jiménez AP, González-Sánchez I, Romero-Velásquez A, Palacios-Espinosa JF, Soria-Arteche O. Synthesis and Cytotoxic Activity of Combretastatin A-4 and 2,3-Diphenyl-2 H-indazole Hybrids. Pharmaceuticals (Basel) 2021; 14:ph14080815. [PMID: 34451912 PMCID: PMC8401203 DOI: 10.3390/ph14080815] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2021] [Revised: 08/05/2021] [Accepted: 08/13/2021] [Indexed: 11/16/2022] Open
Abstract
Cancer is the second leading cause of death, after cardiovascular diseases. Different strategies have been developed to treat cancer; however, chemotherapy with cytotoxic agents is still the most widely used treatment approach. Nevertheless, drug resistance to available chemotherapeutic agents is still a serious problem, and the development of new active compounds remains a constant need. Taking advantage of the molecular hybridization approach, in the present work we designed, synthesized, and tested the cytotoxic activity of two hybrid compounds and seven derivatives based on the structure of combretastatin A-4 and 2,3-diphenyl-2H-indazole. Practical modifications of reported synthetic protocols for 2-pheny-2H-indazole and 2,3-dipheny-2H-indazole derivatives under microwave irradiation were implemented. The cytotoxicity assays showed that our designed hybrid compounds possess strong activity, especially compound 5, which resulted even better than the reference drug cisplatin against HeLa and SK-LU-1 cells (IC50 of 0.16 and 6.63 µM, respectively), and it had similar potency to the reference drug imatinib against K562 cells. Additionally, in silico and in vitro studies strongly suggest tubulin as the molecular target for hybrid compound 5.
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Affiliation(s)
- Jaime Pérez-Villanueva
- Departamento de Sistemas Biológicos, División de Ciencias Biológicas y de la Salud, Universidad Autónoma Metropolitana-Xochimilco (UAM-X), Ciudad de México 04960, Mexico; (F.M.-M.); (F.C.-B.); (A.P.M.-J.); (J.F.P.-E.); (O.S.-A.)
- Correspondence: (J.P.-V.); (L.Y.-M.); Tel.: +52-5-54-83-72-59 (J.P.-V.); Fax: +52-5-55-94-79-29 (J.P.-V.)
| | - Félix Matadamas-Martínez
- Departamento de Sistemas Biológicos, División de Ciencias Biológicas y de la Salud, Universidad Autónoma Metropolitana-Xochimilco (UAM-X), Ciudad de México 04960, Mexico; (F.M.-M.); (F.C.-B.); (A.P.M.-J.); (J.F.P.-E.); (O.S.-A.)
- Maestría y Doctorado en Ciencias Farmacéuticas, División de Ciencias Biológicas y de la Salud, Universidad Autónoma Metropolitana-Xochimilco (UAM-X), Ciudad de México 04960, Mexico
| | - Lilián Yépez-Mulia
- Unidad de Investigación Médica en Enfermedades Infecciosas y Parasitarias, UMAE Hospital de Pediatría, Centro Médico Siglo XXI, Instituto Mexicano del Seguro Social, Ciudad de México 06720, Mexico
- Correspondence: (J.P.-V.); (L.Y.-M.); Tel.: +52-5-54-83-72-59 (J.P.-V.); Fax: +52-5-55-94-79-29 (J.P.-V.)
| | - Vadim Pérez-Koldenkova
- Laboratorio Nacional de Microscopía Avanzada, Centro Médico Nacional Siglo XXI, Instituto Mexicano del Seguro Social, Ciudad de México 06720, Mexico;
| | - Martha Leyte-Lugo
- Catedrático CONACYT Comisionado a Departamento de Sistemas Biológicos, División de Ciencias Biológicas y de la Salud, Universidad Autónoma Metropolitana-Xochimilco (UAM-X), Ciudad de México 04960, Mexico; (M.L.-L.); (I.G.-S.)
| | - Karen Rodríguez-Villar
- Doctorado en Ciencias Biológicas y de la Salud, Universidad Autónoma Metropolitana (UAM), Ciudad de México 04960, Mexico;
| | - Francisco Cortés-Benítez
- Departamento de Sistemas Biológicos, División de Ciencias Biológicas y de la Salud, Universidad Autónoma Metropolitana-Xochimilco (UAM-X), Ciudad de México 04960, Mexico; (F.M.-M.); (F.C.-B.); (A.P.M.-J.); (J.F.P.-E.); (O.S.-A.)
| | - Ana Perla Macías-Jiménez
- Departamento de Sistemas Biológicos, División de Ciencias Biológicas y de la Salud, Universidad Autónoma Metropolitana-Xochimilco (UAM-X), Ciudad de México 04960, Mexico; (F.M.-M.); (F.C.-B.); (A.P.M.-J.); (J.F.P.-E.); (O.S.-A.)
| | - Ignacio González-Sánchez
- Catedrático CONACYT Comisionado a Departamento de Sistemas Biológicos, División de Ciencias Biológicas y de la Salud, Universidad Autónoma Metropolitana-Xochimilco (UAM-X), Ciudad de México 04960, Mexico; (M.L.-L.); (I.G.-S.)
| | - Ariana Romero-Velásquez
- Maestría en Ciencias Biológicas, Universidad Nacional Autónoma de México (UNAM), Ciudad de México 04510, Mexico;
| | - Juan Francisco Palacios-Espinosa
- Departamento de Sistemas Biológicos, División de Ciencias Biológicas y de la Salud, Universidad Autónoma Metropolitana-Xochimilco (UAM-X), Ciudad de México 04960, Mexico; (F.M.-M.); (F.C.-B.); (A.P.M.-J.); (J.F.P.-E.); (O.S.-A.)
| | - Olivia Soria-Arteche
- Departamento de Sistemas Biológicos, División de Ciencias Biológicas y de la Salud, Universidad Autónoma Metropolitana-Xochimilco (UAM-X), Ciudad de México 04960, Mexico; (F.M.-M.); (F.C.-B.); (A.P.M.-J.); (J.F.P.-E.); (O.S.-A.)
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4
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Raut SV, Tidke AD, Dhotre BK, Pathan MA. Synthesis of 3-[5-(Substituted Phenyl)-[1,3,4] Oxadiazol-2-yl]-1 H-Indazole. Polycycl Aromat Compd 2021. [DOI: 10.1080/10406638.2019.1665552] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- S. V. Raut
- Department of Chemistry, Maulana Azad College of Arts, Science and Commerce, Mantha, Dist Jalna, Maharashtra, India
| | - A. D. Tidke
- Department of Chemistry, Maulana Azad College of Arts, Science and Commerce, Mantha, Dist Jalna, Maharashtra, India
| | - B. K. Dhotre
- Department of Chemistry, Swami Vivekanand Sr. College, Mantha, Maharashtra, India
| | - Mohd Arif Pathan
- Department of Chemistry, Maulana Azad College of Arts, Science and Commerce, Mantha, Dist Jalna, Maharashtra, India
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5
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Yen-Pon E, Buttard F, Frédéric L, Thuéry P, Taran F, Pieters G, Champagne PA, Audisio D. Heterohelicenes through 1,3-Dipolar Cycloaddition of Sydnones with Arynes: Synthesis, Origins of Selectivity, and Application to pH-Triggered Chiroptical Switch with CPL Sign Reversal. JACS AU 2021; 1:807-818. [PMID: 34467334 PMCID: PMC8395615 DOI: 10.1021/jacsau.1c00084] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/01/2021] [Indexed: 05/25/2023]
Abstract
Regioselective access to heterohelicenes through the 1,3-dipolar cycloaddition of sydnones with arynes is described. Novel access to sydnones and poly(hetero)aromatic aryne precursors allowed the introduction of chemical diversity over multiple positions of the helical scaffolds. The origins of the unconventional regioselectivity during the cycloaddition steps was systematically investigated using density functional theory (DFT) calculations, unveiling the key features that control this reactivity, namely, face-to-face (π···π) or edge-to-face (C-H···π) interactions, primary orbital interactions and distortion from coplanarity in the transition structures (TSs) of the transformation. From the library of 24 derivatives synthesized, a pyridyl containing derivative displayed reversible, red-shifted, pH-triggered chiroptical switching properties, with CPL-sign reversal. It is found that protonation of the helicene causes a change of the angle between the electric and magnetic dipole moments related to the S1 → S0 transition, resulting in this rare case of reversible CPL sign inversion upon application of an external stimulus.
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Affiliation(s)
- Expédite Yen-Pon
- Université
Paris-Saclay, CEA, Service de Chimie Bio-organique et de Marquage,
DMTS, Gif-sur-Yvette 91191, France
| | - Floris Buttard
- Department
of Chemistry and Environmental Science, New Jersey Institute of Technology, Newark, New Jersey 07102, United States
| | - Lucas Frédéric
- Université
Paris-Saclay, CEA, Service de Chimie Bio-organique et de Marquage,
DMTS, Gif-sur-Yvette 91191, France
| | - Pierre Thuéry
- Université
Paris-Saclay, CEA, CNRS, NIMBE, Gif-sur-Yvette 91191, France
| | - Frédéric Taran
- Université
Paris-Saclay, CEA, Service de Chimie Bio-organique et de Marquage,
DMTS, Gif-sur-Yvette 91191, France
| | - Grégory Pieters
- Université
Paris-Saclay, CEA, Service de Chimie Bio-organique et de Marquage,
DMTS, Gif-sur-Yvette 91191, France
| | - Pier Alexandre Champagne
- Department
of Chemistry and Environmental Science, New Jersey Institute of Technology, Newark, New Jersey 07102, United States
| | - Davide Audisio
- Université
Paris-Saclay, CEA, Service de Chimie Bio-organique et de Marquage,
DMTS, Gif-sur-Yvette 91191, France
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6
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Porte K, Riomet M, Figliola C, Audisio D, Taran F. Click and Bio-Orthogonal Reactions with Mesoionic Compounds. Chem Rev 2021; 121:6718-6743. [PMID: 33238101 DOI: 10.1021/acs.chemrev.0c00806] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Click and bio-orthogonal reactions are dominated by cycloaddition reactions in general and 1,3-dipolar cycloadditions in particular. Among the dipoles routinely used for click chemistry, azides, nitrones, isonitriles, and nitrile oxides are the most popular. This review is focused on the emerging click chemistry that uses mesoionic compounds as dipole partners. Mesoionics are a very old family of molecules, but their use as reactants for click and bio-orthogonal chemistry is quite recent. The facility to derivatize these dipoles and to tune their reactivity toward cycloaddition reactions makes mesoionics an attractive opportunity for future click chemistry development. In addition, some compounds from this family are able to undergo click-and-release reactions, finding interesting applications in cells, as well as in animals. This review covers the synthetic access to main mesoionics, their reaction with dipolarophiles, and recent applications in chemical biology and heterocycle synthesis.
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Affiliation(s)
- Karine Porte
- Université Paris-Saclay, CEA, INRAE, Département Médicaments et Technologies pour la Santé (DMTS), SCBM, 91191 Gif-sur-Yvette, France
| | - Margaux Riomet
- Université Paris-Saclay, CEA, INRAE, Département Médicaments et Technologies pour la Santé (DMTS), SCBM, 91191 Gif-sur-Yvette, France
| | - Carlotta Figliola
- Université Paris-Saclay, CEA, INRAE, Département Médicaments et Technologies pour la Santé (DMTS), SCBM, 91191 Gif-sur-Yvette, France
| | - Davide Audisio
- Université Paris-Saclay, CEA, INRAE, Département Médicaments et Technologies pour la Santé (DMTS), SCBM, 91191 Gif-sur-Yvette, France
| | - Frédéric Taran
- Université Paris-Saclay, CEA, INRAE, Département Médicaments et Technologies pour la Santé (DMTS), SCBM, 91191 Gif-sur-Yvette, France
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7
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Synthesis, Antiprotozoal Activity, and Cheminformatic Analysis of 2-Phenyl-2 H-Indazole Derivatives. Molecules 2021; 26:molecules26082145. [PMID: 33917871 PMCID: PMC8068258 DOI: 10.3390/molecules26082145] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2021] [Revised: 03/24/2021] [Accepted: 04/06/2021] [Indexed: 11/17/2022] Open
Abstract
Indazole is an important scaffold in medicinal chemistry. At present, the progress on synthetic methodologies has allowed the preparation of several new indazole derivatives with interesting pharmacological properties. Particularly, the antiprotozoal activity of indazole derivatives have been recently reported. Herein, a series of 22 indazole derivatives was synthesized and studied as antiprotozoals. The 2-phenyl-2H-indazole scaffold was accessed by a one-pot procedure, which includes a combination of ultrasound synthesis under neat conditions as well as Cadogan's cyclization. Moreover, some compounds were derivatized to have an appropriate set to provide structure-activity relationships (SAR) information. Whereas the antiprotozoal activity of six of these compounds against E. histolytica, G. intestinalis, and T. vaginalis had been previously reported, the activity of the additional 16 compounds was evaluated against these same protozoa. The biological assays revealed structural features that favor the antiprotozoal activity against the three protozoans tested, e.g., electron withdrawing groups at the 2-phenyl ring. It is important to mention that the indazole derivatives possess strong antiprotozoal activity and are also characterized by a continuous SAR.
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8
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Zheng L, Cai L, Tao K, Xie Z, Lai Y, Guo W. Progress in Photoinduced Radical Reactions using Electron Donor‐Acceptor Complexes. ASIAN J ORG CHEM 2021. [DOI: 10.1002/ajoc.202100009] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Lvyin Zheng
- Key Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province Gannan Normal University Ganzhou 341000 P. R. China
| | - Liuhuan Cai
- Key Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province Gannan Normal University Ganzhou 341000 P. R. China
| | - Kailiang Tao
- Key Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province Gannan Normal University Ganzhou 341000 P. R. China
| | - Zhen Xie
- Key Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province Gannan Normal University Ganzhou 341000 P. R. China
| | - Yin‐Long Lai
- College of Chemistry and Civil Engineering Shaoguan University Shaoguan 512005 P. R. China
| | - Wei Guo
- Key Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province Gannan Normal University Ganzhou 341000 P. R. China
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9
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Affiliation(s)
- Jiarong Shi
- School of Chemistry and Chemical Engineering, Chongqing University, 174 Shazheng Street, Chongqing, P. R. China, 400030
| | - Lianggui Li
- School of Chemistry and Chemical Engineering, Chongqing University, 174 Shazheng Street, Chongqing, P. R. China, 400030
| | - Yang Li
- School of Chemistry and Chemical Engineering, Chongqing University, 174 Shazheng Street, Chongqing, P. R. China, 400030
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10
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Ahlburg NL, Freese T, Kolb S, Mummel S, Schmidt A, Werz DB. Functionalization of Sydnones with Donor‐Acceptor Cyclopropanes, Cyclobutanes, and Michael Acceptors. European J Org Chem 2021. [DOI: 10.1002/ejoc.202100070] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Nils L. Ahlburg
- Technische Universität Braunschweig Institute of Organic Chemistry Hagenring 30 38106 Braunschweig Germany
| | - Tyll Freese
- Technische Universität Braunschweig Institute of Organic Chemistry Hagenring 30 38106 Braunschweig Germany
| | - Simon Kolb
- Technische Universität Braunschweig Institute of Organic Chemistry Hagenring 30 38106 Braunschweig Germany
| | - Sebastian Mummel
- Clausthal University of Technology Institute of Organic Chemistry Leibnizstraße 6 38678 Clausthal-Zellerfeld Germany
| | - Andreas Schmidt
- Clausthal University of Technology Institute of Organic Chemistry Leibnizstraße 6 38678 Clausthal-Zellerfeld Germany
| | - Daniel B. Werz
- Technische Universität Braunschweig Institute of Organic Chemistry Hagenring 30 38106 Braunschweig Germany
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11
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Aljaar N, Al-Noaimi M, Conrad J, Beifuss U. Direct Formation of 2-Substituted 2 H-Indazoles by a Pd-Catalyzed Reaction between 2-Halobenzyl Halides and Arylhydrazines. J Org Chem 2021; 86:1408-1418. [PMID: 33306383 DOI: 10.1021/acs.joc.0c01923] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A direct and operationally simple method for the regioselective synthesis of 2-aryl-substituted 2H-indazoles is reported. The Pd-catalyzed reaction between easily available 2-bromobenzyl bromides and arylhydrazines employing Cs2CO3 as the base and t-Bu3PHBF4 as the ligand in DMSO at 120 °C in a sealed tube delivers the 2-substituted-2H-indazoles in a single synthetic step with yields up to 79%. The new method is based on a regioselective intermolecular N-benzylation followed by intramolecular N-arylation and oxidation.
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Affiliation(s)
- Nayyef Aljaar
- Department of Chemistry, Faculty of Science, The Hashemite University, P.O. Box 330127, Zarqa 13133, Jordan
| | - Mousa Al-Noaimi
- Department of Chemistry, Faculty of Science, The Hashemite University, P.O. Box 330127, Zarqa 13133, Jordan
| | - Jürgen Conrad
- Bioorganische Chemie, Institut für Chemie, Universität Hohenheim, Garbenstraße 30, Stuttgart D-70599, Germany
| | - Uwe Beifuss
- Bioorganische Chemie, Institut für Chemie, Universität Hohenheim, Garbenstraße 30, Stuttgart D-70599, Germany
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12
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Bouton J, Van Calenbergh S, Hullaert J. Sydnone Ribosides as a Platform for the Synthesis of Pyrazole C-Nucleosides: A Unified Synthesis of Formycin B and Pyrazofurin. Org Lett 2020; 22:9287-9291. [PMID: 33210930 DOI: 10.1021/acs.orglett.0c03523] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
The C-nucleoside natural products formycin B and pyrazofurin were synthesized in seven steps employing a sydnone riboside as common intermediate. Sydnone ribosides were synthesized via a direct Lewis acid catalyzed dehydrative glycosylation reaction. We demonstrated that these can be used for the diversity-oriented synthesis of pyrazole C-nucleoside analogues via thermal 1,3-dipolar cycloaddition reactions with various alkynes, giving access to the pyrazole C-nucleoside natural products, as well as opening new avenues for exploring nucleoside chemical space.
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Affiliation(s)
- Jakob Bouton
- Laboratory for Medicinal Chemistry, Ghent University, Ottergemsesteenweg 460, 9000 Ghent, Belgium
| | - Serge Van Calenbergh
- Laboratory for Medicinal Chemistry, Ghent University, Ottergemsesteenweg 460, 9000 Ghent, Belgium
| | - Jan Hullaert
- Laboratory for Medicinal Chemistry, Ghent University, Ottergemsesteenweg 460, 9000 Ghent, Belgium
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13
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Liu Z, Li QX, Song B. Recent Research Progress in and Perspectives of Mesoionic Insecticides: Nicotinic Acetylcholine Receptor Inhibitors. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2020; 68:11039-11053. [PMID: 32915567 DOI: 10.1021/acs.jafc.0c02376] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Triflumezopyrim exemplifies a new class of mesoionic insecticides and has attracted increasing attention as a result of its unique structure, high level of insecticidal activity, new mechanisms of action, low toxicity toward non-target organisms, and environmental friendliness. It inhibits the nicotinic acetylcholine receptor and has high potency against sucking pests, including the brown planthopper (Nilaparvata lugens), which has developed serious resistance to conventional neonicotinoids and low cross-resistance to some newly developed neonicotinoids. This review focuses on the discovery, synthesis, structure-activity relationships, and mechanism of action of mesoionic insecticides. Finally, potential directions for the development of mesoionic insecticides are discussed.
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Affiliation(s)
- Zhengjun Liu
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Huaxi District, Guiyang, Guizhou 550025, People's Republic of China
- People's Republic of China; College of Chemistry and Chemical Engineering, Anshun University, Anshun, Guizhou 561000, China
| | - Qing X Li
- Department of Molecular Biosciences and Bioengineering, University of Hawaii at Manoa, Honolulu, Hawaii 96822, United States
| | - Baoan Song
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Huaxi District, Guiyang, Guizhou 550025, People's Republic of China
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14
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Esfandiary N, Heydari A. Fe
2
O
3
@[proline]–CuMgAl–LDH: A magnetic bifunctional copper and organocatalyst system for one‐pot synthesis of quinolines and 2
H
‐indazoles in green media. Appl Organomet Chem 2020. [DOI: 10.1002/aoc.5760] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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15
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Ghosh S, Mondal S, Hajra A. Direct Catalytic Functionalization of Indazole Derivatives. Adv Synth Catal 2020. [DOI: 10.1002/adsc.202000423] [Citation(s) in RCA: 42] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Sumit Ghosh
- Department of Chemistry Visva-Bharati (A Central University) Santiniketan 731235 India
| | - Susmita Mondal
- Department of Chemistry Visva-Bharati (A Central University) Santiniketan 731235 India
| | - Alakananda Hajra
- Department of Chemistry Visva-Bharati (A Central University) Santiniketan 731235 India
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16
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Raut S, Tidke A, Dhotre B, Arif PM. Different Strategies to the Synthesis of Indazole and its Derivatives: A Review. MINI-REV ORG CHEM 2020. [DOI: 10.2174/1570193x16666190430160324] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
In this review, works of various researchers working on the synthesis of indazole and their related compound are cited. The review comprises of methodologies for the synthesis of 1H and 2H indazole derivatives, along with some pharmacological activities. In this review, research papers published in various peer-reviewed journals between the year 2000 and year 2017 are enlisted in alphabetical order.
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Affiliation(s)
- Santosh Raut
- Maulana Azad College and Research Center, Rouza Bagh, Aurangabad (M.S.), India
| | - Atul Tidke
- Maulana Azad College and Research Center, Rouza Bagh, Aurangabad (M.S.), India
| | | | - Pathan Mohd Arif
- Maulana Azad College and Research Center, Rouza Bagh, Aurangabad (M.S.), India
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17
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Zheng S, Lin X, Wu H, Zhao C, Xu H. Synthesis, bioactivities and phloem uptake of dipeptide-chlorantraniliprole derivatives. BMC Chem 2020; 14:22. [PMID: 32259134 PMCID: PMC7106865 DOI: 10.1186/s13065-020-00673-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2019] [Accepted: 03/09/2020] [Indexed: 11/10/2022] Open
Abstract
Phloem systemicity is a desirable property for insecticides to control sucking insects. However, the development of phloem systemic insecticides is challenging. One possible strategy is to link existed insecticides with endogenous substances so that the resulting conjugates can be transported by specific transporters into the phloem. In this study, novel dipeptide promoieties were introduced into chlorantraniliprole, which is an efficient and broad-spectrum anthranilic diamide insecticide without phloem mobility. Twenty-two new dipeptide-chlorantraniliprole conjugates have been synthesized. Systemic tests showed that all conjugates exhibited phloem mobility in Ricinus communis. In particular, compound 4g with alanyl-alanine dipeptide fragment was able to accumulate in phloem sap (114.49 ± 11.10 μM) in the form of its hydrolysis product 5g. Results of bioassay showed that conjugates 4g and 5g were able to exhibit comparable insecticidal activity against Plutella xylostella L. and Spodoptera exigua compared to its parent compound chlorantraniliprole. This work demonstrated that the dipeptide structures were able to contribute to the improvement of the uptake and phloem mobility of chlorantraniliprole, and two phloem mobile conjugates with satisfactory in vivo insecticidal effect was obtained as new candidates for high-efficient insecticides.
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Affiliation(s)
- Shijie Zheng
- 1State Key Laboratory for Conservation and Utilization of Subtropical Argo-Bioresources, South China Agricultural University, Guangzhou, Guangdong China.,2Key Laboratory of Natural Pesticide and Chemical Biology, Ministry of Education, South China Agricultural University, Guangzhou, 510642 China
| | - Xiaomin Lin
- 1State Key Laboratory for Conservation and Utilization of Subtropical Argo-Bioresources, South China Agricultural University, Guangzhou, Guangdong China.,2Key Laboratory of Natural Pesticide and Chemical Biology, Ministry of Education, South China Agricultural University, Guangzhou, 510642 China
| | - Hanxiang Wu
- 1State Key Laboratory for Conservation and Utilization of Subtropical Argo-Bioresources, South China Agricultural University, Guangzhou, Guangdong China.,2Key Laboratory of Natural Pesticide and Chemical Biology, Ministry of Education, South China Agricultural University, Guangzhou, 510642 China
| | - Chen Zhao
- 1State Key Laboratory for Conservation and Utilization of Subtropical Argo-Bioresources, South China Agricultural University, Guangzhou, Guangdong China.,2Key Laboratory of Natural Pesticide and Chemical Biology, Ministry of Education, South China Agricultural University, Guangzhou, 510642 China
| | - Hanhong Xu
- 1State Key Laboratory for Conservation and Utilization of Subtropical Argo-Bioresources, South China Agricultural University, Guangzhou, Guangdong China.,2Key Laboratory of Natural Pesticide and Chemical Biology, Ministry of Education, South China Agricultural University, Guangzhou, 510642 China
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18
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Raut S, Dhotre B, Tidke A, Pathan MA. An Operationally Simple and Efficient Synthesis of 7-Benzylidene-substitutedphenyl- 3,3a,4,5,6,7-hexahydro-2H-indazole by Grinding Method. Curr Org Synth 2020; 17:313-321. [PMID: 32250225 DOI: 10.2174/1570179417666200406142118] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2019] [Revised: 12/11/2019] [Accepted: 12/14/2019] [Indexed: 11/22/2022]
Abstract
BACKGROUND An eco-friendly, operationally simple and efficient reaction is shown between various 2,6-bis-(substituted-benzylidene)-cyclohexanones and differently substituted hydrazine in the presence of acetic acid. METHODS The reaction between various 2,6-bis-(substituted-benzylidene)-cyclohexanones and differently substituted hydrazine in the presence of acetic acid afforded 7-Benzylidene-substituted-phenyl-3,3a,4,5,6,7- hexahydro-2H-indazole in 74 to 92 % yield in short reaction time using the grindstone technique. RESULTS AND DISCUSSION The notable advantages of this method include mild synthetic conditions, weak acid catalysis, and non-hazardous solvent which make this method environmentally safer. CONCLUSION In conclusion, we have developed an efficient, simple and eco-friendly method for the synthesis of 7-Benzylidene-substituted-phenyl-3,3a,4,5,6,7-hexahydro-2H-indazole by grinding technique. The notable benefits of this method are waste minimization, no organic solvent required, simple procedure, easy work-up, and clean reaction profile.
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Affiliation(s)
- Santosh Raut
- Department of Chemistry, Maulana Azad College, Aurangabad, India
| | - Bharat Dhotre
- Department of Chemistry, Swami Vivekanand Senior College, Mantha, India
| | - Atul Tidke
- Department of Chemistry, Maulana Azad College, Aurangabad, India
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19
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Ikawa T, Sun J, Takagi A, Akai S. One-Pot Generation of Functionalized Benzynes from Readily Available 2-Hydroxyphenylboronic Acids. J Org Chem 2020; 85:3383-3392. [PMID: 32013426 DOI: 10.1021/acs.joc.9b03169] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
We developed a one-pot method for the generation of benzynes from a range of readily available 2-hydroxyphenylboronic acids. This method features the in situ activation of both boronic acid and hydroxyl groups of the substrate to enhance benzyne generation at 60 °C. Such mild conditions facilitate the generation of functionalized benzynes that immediately react with diverse arynophiles to produce multisubstituted fused benzenes.
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Affiliation(s)
- Takashi Ikawa
- Graduate School of Pharmaceutical Sciences, Osaka University, Yamadaoka 1-6, Suita, Osaka 565-0871, Japan
| | - JingKai Sun
- Graduate School of Pharmaceutical Sciences, Osaka University, Yamadaoka 1-6, Suita, Osaka 565-0871, Japan
| | - Akira Takagi
- Graduate School of Pharmaceutical Sciences, Osaka University, Yamadaoka 1-6, Suita, Osaka 565-0871, Japan.,Kobe Pharmaceutical University, Motoyamakita, Higashinada, Kobe 658-8558, Japan
| | - Shuji Akai
- Graduate School of Pharmaceutical Sciences, Osaka University, Yamadaoka 1-6, Suita, Osaka 565-0871, Japan
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20
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Cherepanov IA, Moiseev SK. Recent developments in the chemistry of sydnones and sydnone imines. ADVANCES IN HETEROCYCLIC CHEMISTRY 2020. [DOI: 10.1016/bs.aihch.2019.11.003] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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21
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Aganda KCC, Kim J, Lee A. Visible-light-mediated direct C3-arylation of 2H-indazoles enabled by an electron-donor-acceptor complex. Org Biomol Chem 2019; 17:9698-9702. [PMID: 31696189 DOI: 10.1039/c9ob02074h] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A mild visible-light-mediated, photocatalyst-free arylation of 2H-indazoles was developed. The formation of an electron donor-acceptor complex by 2H-indazoles and aryl diazonium salts in the presence of pyridine allows the direct arylation of 2H-indazoles under visible-light irradiation. This process provides an efficient route for the synthesis of C3-arylated-2H-indazoles, which are important scaffolds of various bioactive compounds.
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Affiliation(s)
- Kim Christopher C Aganda
- Department of Energy Science and Technology, Myongji University, Yongin, 17058, Republic of Korea
| | - Junyoung Kim
- Department of Chemistry, Myongji University, Yongin 17058, Republic of Korea.
| | - Anna Lee
- Department of Energy Science and Technology, Myongji University, Yongin, 17058, Republic of Korea and Department of Chemistry, Myongji University, Yongin 17058, Republic of Korea.
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22
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Kumar RA, Pattanayak MR, Yen‐Pon E, Eliyan J, Porte K, Bernard S, Riomet M, Thuéry P, Audisio D, Taran F. Strain‐Promoted 1,3‐Dithiolium‐4‐olates–Alkyne Cycloaddition. Angew Chem Int Ed Engl 2019; 58:14544-14548. [DOI: 10.1002/anie.201908052] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2019] [Revised: 07/30/2019] [Indexed: 01/09/2023]
Affiliation(s)
- Ramar Arun Kumar
- Service de Chimie Bio-organique et Marquage (SCBM), CEA/DRF/JOLIOT Université Paris-Saclay F-91191 Gif-sur-Yvette France
- SRM Research Institute Department of Chemistry SRM Institute of Science and Technology, Kattankulathur 603203 Chennai India
| | - Manas R. Pattanayak
- Service de Chimie Bio-organique et Marquage (SCBM), CEA/DRF/JOLIOT Université Paris-Saclay F-91191 Gif-sur-Yvette France
| | - Expédite Yen‐Pon
- Service de Chimie Bio-organique et Marquage (SCBM), CEA/DRF/JOLIOT Université Paris-Saclay F-91191 Gif-sur-Yvette France
| | - Jijy Eliyan
- Service de Chimie Bio-organique et Marquage (SCBM), CEA/DRF/JOLIOT Université Paris-Saclay F-91191 Gif-sur-Yvette France
| | - Karine Porte
- Service de Chimie Bio-organique et Marquage (SCBM), CEA/DRF/JOLIOT Université Paris-Saclay F-91191 Gif-sur-Yvette France
| | - Sabrina Bernard
- Service de Chimie Bio-organique et Marquage (SCBM), CEA/DRF/JOLIOT Université Paris-Saclay F-91191 Gif-sur-Yvette France
| | - Margaux Riomet
- Service de Chimie Bio-organique et Marquage (SCBM), CEA/DRF/JOLIOT Université Paris-Saclay F-91191 Gif-sur-Yvette France
| | - Pierre Thuéry
- NIMBE CEA CNRS Université Paris-Saclay 91191 Gif-sur-Yvette France
| | - Davide Audisio
- Service de Chimie Bio-organique et Marquage (SCBM), CEA/DRF/JOLIOT Université Paris-Saclay F-91191 Gif-sur-Yvette France
| | - Frédéric Taran
- Service de Chimie Bio-organique et Marquage (SCBM), CEA/DRF/JOLIOT Université Paris-Saclay F-91191 Gif-sur-Yvette France
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23
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Kumar RA, Pattanayak MR, Yen‐Pon E, Eliyan J, Porte K, Bernard S, Riomet M, Thuéry P, Audisio D, Taran F. Strain‐Promoted 1,3‐Dithiolium‐4‐olates–Alkyne Cycloaddition. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201908052] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Ramar Arun Kumar
- Service de Chimie Bio-organique et Marquage (SCBM), CEA/DRF/JOLIOT Université Paris-Saclay F-91191 Gif-sur-Yvette France
- SRM Research Institute Department of Chemistry SRM Institute of Science and Technology, Kattankulathur 603203 Chennai India
| | - Manas R. Pattanayak
- Service de Chimie Bio-organique et Marquage (SCBM), CEA/DRF/JOLIOT Université Paris-Saclay F-91191 Gif-sur-Yvette France
| | - Expédite Yen‐Pon
- Service de Chimie Bio-organique et Marquage (SCBM), CEA/DRF/JOLIOT Université Paris-Saclay F-91191 Gif-sur-Yvette France
| | - Jijy Eliyan
- Service de Chimie Bio-organique et Marquage (SCBM), CEA/DRF/JOLIOT Université Paris-Saclay F-91191 Gif-sur-Yvette France
| | - Karine Porte
- Service de Chimie Bio-organique et Marquage (SCBM), CEA/DRF/JOLIOT Université Paris-Saclay F-91191 Gif-sur-Yvette France
| | - Sabrina Bernard
- Service de Chimie Bio-organique et Marquage (SCBM), CEA/DRF/JOLIOT Université Paris-Saclay F-91191 Gif-sur-Yvette France
| | - Margaux Riomet
- Service de Chimie Bio-organique et Marquage (SCBM), CEA/DRF/JOLIOT Université Paris-Saclay F-91191 Gif-sur-Yvette France
| | - Pierre Thuéry
- NIMBE CEA CNRS Université Paris-Saclay 91191 Gif-sur-Yvette France
| | - Davide Audisio
- Service de Chimie Bio-organique et Marquage (SCBM), CEA/DRF/JOLIOT Université Paris-Saclay F-91191 Gif-sur-Yvette France
| | - Frédéric Taran
- Service de Chimie Bio-organique et Marquage (SCBM), CEA/DRF/JOLIOT Université Paris-Saclay F-91191 Gif-sur-Yvette France
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24
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Vidyacharan S, Ramanjaneyulu BT, Jang S, Kim DP. Continuous-Flow Visible Light Organophotocatalysis for Direct Arylation of 2H-Indazoles: Fast Access to Drug Molecules. CHEMSUSCHEM 2019; 12:2581-2586. [PMID: 30985985 DOI: 10.1002/cssc.201900736] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/14/2019] [Revised: 04/09/2019] [Indexed: 06/09/2023]
Abstract
A continuous-flow homogeneous photocatalytic method has been devised for the direct arylation of 2H-indazoles. This visible-light-promoted approach directly accesses a wide range of structurally diverse C3-arylated scaffolds of biological interest in a fast (1 min), single-step reaction by using eosin Y as an organophotocatalyst. Furthermore, a microreactor technology is also employed for the fast synthesis of liver X receptor inhibitor drugs with very good yields under metal-free conditions, whereas the reported methods required multiple steps and much longer reaction times (18-24 h).
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Affiliation(s)
- Shinde Vidyacharan
- Center of Intelligent Microprocess of Pharmaceutical Synthesis, Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH), 37673, Pohang, Korea
| | - Bandaru T Ramanjaneyulu
- Center of Intelligent Microprocess of Pharmaceutical Synthesis, Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH), 37673, Pohang, Korea
| | - Seungwook Jang
- Center of Intelligent Microprocess of Pharmaceutical Synthesis, Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH), 37673, Pohang, Korea
| | - Dong-Pyo Kim
- Center of Intelligent Microprocess of Pharmaceutical Synthesis, Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH), 37673, Pohang, Korea
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25
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Khalifeh R, Karimzadeh F. Copper nanoparticles supported on charcoal mediated one-pot three-component synthesis of N-substituted-2H-indazoles via consecutive condensation C–N and N–N bond formation. CAN J CHEM 2019. [DOI: 10.1139/cjc-2018-0428] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
An efficient and straightforward protocol for direct synthesis of 2H-indazoles is achieved from consecutive condensation of 2-halobenzaldehydes, primary amines, and sodium azide catalyzed by heterogeneous copper nanoparticles on charcoal (Cu/C) is achieved. The recoverable heterogeneous copper nanoparticles on charcoal (Cu/C) catalyst exhibited an impressive activity for the title reaction without any additives (expensive ligands, etc.). A series of structurally diverse 2H-indazoles were prepared in good to excellent yields from easily accessible starting materials by employing this protocol.
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Affiliation(s)
- Reza Khalifeh
- Department of Chemistry, Shiraz University of Technology, Shiraz 71555-313, Iran
- Department of Chemistry, Shiraz University of Technology, Shiraz 71555-313, Iran
| | - Faranak Karimzadeh
- Department of Chemistry, Shiraz University of Technology, Shiraz 71555-313, Iran
- Department of Chemistry, Shiraz University of Technology, Shiraz 71555-313, Iran
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26
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Zhang R, Liu Z, Peng Q, Zhou Y, Xu L, Pan X. Access to 2-substituted-2H-indazoles via a copper-catalyzed regioselective cross-coupling reaction. Org Biomol Chem 2019; 16:1816-1822. [PMID: 29479627 DOI: 10.1039/c8ob00128f] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A CuCl catalyzed C-N cross-coupling reaction using commercially available 1H-indazoles with diaryliodonium salts is described. The methodology features ample structural versatility, affording 2-substituted-2H-indazole in good yields and complete N(2)-regiocontrol. Furthermore, the utility of the reaction was demonstrated in the synthesis of a known estrogen receptor β agonist. Mechanistic studies using density functional theory calculations suggested that the complete regioselectivity can be attributed to the only weak base TfO- in our system which could not deprotonate indazoles, and the catalyst oxidation process would be the rate-determining step.
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Affiliation(s)
- Rong Zhang
- School of Perfume and Aroma Technology, Shanghai Institute of Technology, 100 Haiquan Road, Shanghai, 201418, China
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27
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Uchida K, Yoshida S, Hosoya T. Synthetic Aryne Chemistry toward Multicomponent Coupling. J SYN ORG CHEM JPN 2019. [DOI: 10.5059/yukigoseikyokaishi.77.145] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
| | - Suguru Yoshida
- Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University
| | - Takamitsu Hosoya
- Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University
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28
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Yen-Pon E, Champagne PA, Plougastel L, Gabillet S, Thuéry P, Johnson M, Muller G, Pieters G, Taran F, Houk KN, Audisio D. Sydnone-Based Approach to Heterohelicenes through 1,3-Dipolar-Cycloadditions. J Am Chem Soc 2019; 141:1435-1440. [PMID: 30628450 DOI: 10.1021/jacs.8b11465] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
The first approach to pyrazole-containing helicenes via sydnone-aryne [3 + 2]-cycloaddition is described. An unprecedented regioselectivity in the cycloaddition step toward the more sterically constrained product was observed in the presence of extended aromatic scaffolds. DFT calculations enabled understanding the origin of this unexpected selectivity.
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Affiliation(s)
- Expédite Yen-Pon
- Service de Chimie Bio-organique et Marquage (SCBM), JOLIOT , CEA, Université Paris-Saclay , 91191 Gif-sur-Yvette , France
| | - Pier Alexandre Champagne
- Department of Chemistry and Biochemistry , University of California , Los Angeles , California 90095 , United States
| | - Lucie Plougastel
- Service de Chimie Bio-organique et Marquage (SCBM), JOLIOT , CEA, Université Paris-Saclay , 91191 Gif-sur-Yvette , France
| | - Sandra Gabillet
- Service de Chimie Bio-organique et Marquage (SCBM), JOLIOT , CEA, Université Paris-Saclay , 91191 Gif-sur-Yvette , France
| | - Pierre Thuéry
- NIMBE, CEA, CNRS, Université Paris-Saclay , 91191 Gif-sur-Yvette , France
| | - Mizuki Johnson
- Department of Chemistry , San José State University , San José , California 95192-0101 , United States
| | - Gilles Muller
- Department of Chemistry , San José State University , San José , California 95192-0101 , United States
| | - Grégory Pieters
- Service de Chimie Bio-organique et Marquage (SCBM), JOLIOT , CEA, Université Paris-Saclay , 91191 Gif-sur-Yvette , France
| | - Frédéric Taran
- Service de Chimie Bio-organique et Marquage (SCBM), JOLIOT , CEA, Université Paris-Saclay , 91191 Gif-sur-Yvette , France
| | - K N Houk
- Department of Chemistry and Biochemistry , University of California , Los Angeles , California 90095 , United States
| | - Davide Audisio
- Service de Chimie Bio-organique et Marquage (SCBM), JOLIOT , CEA, Université Paris-Saclay , 91191 Gif-sur-Yvette , France
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29
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Majedi S, Karamian R, Moazzami Farida SH. Synthesis of Novel Bioactive Candidates 4-Aryl-1H-indeno[1,2-d]pyrimidine-2,5-diones Using {[HMIM]C(NO2)3} as a Dual Rule Ionic Liquid Catalyst: An Experimental and Theoretical Evaluation of Their Corresponding Antioxidant Activities. Polycycl Aromat Compd 2018. [DOI: 10.1080/10406638.2018.1533873] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Soma Majedi
- Faculty of Chemistry, Bu-Ali Sina University, Hamedan, Iran
| | - Roya Karamian
- Department of Biology, Faculty of Sciences, Bu-Ali Sina University, Hamedan, Iran
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30
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Schoene J, Bel Abed H, Schmieder P, Christmann M, Nazaré M. A General One-Pot Synthesis of 2H-Indazoles Using an Organophosphorus-Silane System. Chemistry 2018; 24:9090-9100. [PMID: 29644761 DOI: 10.1002/chem.201800763] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2018] [Indexed: 11/11/2022]
Abstract
A simple and direct approach for the regioselective construction of the privileged 2H-indazole scaffold is described. The developed one-pot strategy involves phospholene-mediated N-N bond formation to access 2H-indazoles. The amount of organophosphorus reagent was minimized by recycling the phospholene oxide with organosilane reductants. Starting from functionalized 2-nitrobenzaldehydes and primary amines, a mild reductive cyclization, involving the use of commercially available phospholene oxide and silanes, delivered a wide variety of substituted 2H-indazoles in good to excellent yields.
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Affiliation(s)
- Jens Schoene
- Departments of Chemical Biology and Structural Biology, Leibniz-Forschungsinstitut für Molekulare Pharmakologie (FMP), Campus Berlin-Buch, Robert-Roessle-Str. 10, 13125, Berlin, Germany
| | - Hassen Bel Abed
- Departments of Chemical Biology and Structural Biology, Leibniz-Forschungsinstitut für Molekulare Pharmakologie (FMP), Campus Berlin-Buch, Robert-Roessle-Str. 10, 13125, Berlin, Germany
| | - Peter Schmieder
- Departments of Chemical Biology and Structural Biology, Leibniz-Forschungsinstitut für Molekulare Pharmakologie (FMP), Campus Berlin-Buch, Robert-Roessle-Str. 10, 13125, Berlin, Germany
| | - Mathias Christmann
- Institut für Chemie und Biochemie, Organische Chemie, Freie Universität Berlin, Takustrasse. 3, 14195, Berlin, Germany
| | - Marc Nazaré
- Departments of Chemical Biology and Structural Biology, Leibniz-Forschungsinstitut für Molekulare Pharmakologie (FMP), Campus Berlin-Buch, Robert-Roessle-Str. 10, 13125, Berlin, Germany.,Berlin Institute of Health (BIH), Anna-Louisa-Karsch-Str. 2, 10178 Kapelle-Ufer 2, 10117, Berlin, Germany
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31
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Hladíková V, Váňa J, Hanusek J. [3 + 2]-Cycloaddition reaction of sydnones with alkynes. Beilstein J Org Chem 2018; 14:1317-1348. [PMID: 29977399 PMCID: PMC6009199 DOI: 10.3762/bjoc.14.113] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2018] [Accepted: 05/11/2018] [Indexed: 12/15/2022] Open
Abstract
This review covers all known examples of [3 + 2]-cycloaddition between sydnones and both terminal as well as internal alkynes/cycloalkynes taken from literature since its discovery by Huisgen in 1962 up to the current date. Except enumeration of synthetic applications it also covers mechanistic studies, catalysis, effects of substituents and reaction conditions influencing reaction rate and regioselectivity.
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Affiliation(s)
- Veronika Hladíková
- Institute of Organic Chemistry and Technology, University of Pardubice, Studentská 573, 532 10 Pardubice, Czech Republic
| | - Jiří Váňa
- Institute of Organic Chemistry and Technology, University of Pardubice, Studentská 573, 532 10 Pardubice, Czech Republic
| | - Jiří Hanusek
- Institute of Organic Chemistry and Technology, University of Pardubice, Studentská 573, 532 10 Pardubice, Czech Republic
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32
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Bookser BC, Weinhouse MI, Burns AC, Valiere AN, Valdez LJ, Stanczak P, Na J, Rheingold AL, Moore CE, Dyck B. Solvent-Controlled, Site-Selective N-Alkylation Reactions of Azolo-Fused Ring Heterocycles at N1-, N2-, and N3-Positions, Including Pyrazolo[3,4-d]pyrimidines, Purines, [1,2,3]Triazolo[4,5]pyridines, and Related Deaza-Compounds. J Org Chem 2018; 83:6334-6353. [DOI: 10.1021/acs.joc.8b00540] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
| | | | | | | | | | | | | | - Arnold L. Rheingold
- Department of Chemistry, Crystallography Laboratory, University of California, San Diego, Urey Hall 5128, mail code 0358, 9500 Gilman Drive, La Jolla, California 92093-0358, United States
| | - Curtis E. Moore
- Department of Chemistry, Crystallography Laboratory, University of California, San Diego, Urey Hall 5128, mail code 0358, 9500 Gilman Drive, La Jolla, California 92093-0358, United States
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33
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Bogonda G, Kim HY, Oh K. Direct Acyl Radical Addition to 2H-Indazoles Using Ag-Catalyzed Decarboxylative Cross-Coupling of α-Keto Acids. Org Lett 2018; 20:2711-2715. [DOI: 10.1021/acs.orglett.8b00920] [Citation(s) in RCA: 78] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Ganganna Bogonda
- Center for Metareceptome Research, College of Pharmacy, Chung-Ang University, 84 Heukseok-ro, Dongjak, Seoul 06974, Republic of Korea
| | - Hun Young Kim
- Center for Metareceptome Research, College of Pharmacy, Chung-Ang University, 84 Heukseok-ro, Dongjak, Seoul 06974, Republic of Korea
| | - Kyungsoo Oh
- Center for Metareceptome Research, College of Pharmacy, Chung-Ang University, 84 Heukseok-ro, Dongjak, Seoul 06974, Republic of Korea
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34
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Decuypère E, Plougastel L, Audisio D, Taran F. Sydnone-alkyne cycloaddition: applications in synthesis and bioconjugation. Chem Commun (Camb) 2018; 53:11515-11527. [PMID: 28959814 DOI: 10.1039/c7cc06405e] [Citation(s) in RCA: 65] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Sydnones are among the most popular mesoionic compounds studied so far for cycloaddition reactions. However, despite their good chemical stability and versatility, only a limited number of research groups have worked on their chemistry and use in organic synthesis. This feature article aims at providing an overview of the most recent developments in sydnone-alkyne cycloadditions, with particular attention on the strategies that allow us to achieving high regiocontrol and milder reaction conditions. The recent discovery that this dipole is able to undergo click and biorthogonal reactions with cycloalkynes may stimulate renewed interest from the scientific community. Given the high potential and flexibility of this family of mesoionics, we believe that major developments are to be expected both in terms of organic synthetic methodologies and biorthogonal chemistry applications in the field of chemical biology.
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Affiliation(s)
- Elodie Decuypère
- Service de Chimie Bio-organique et Marquage DRF-JOLIOT-SCBM, CEA, Université Paris-Saclay, 91191 Gif-sur-Yvette, France.
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35
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Wu TY, Dhole S, Selvaraju M, Sun CM. Regioselective Synthesis of Pyranone-Fused Indazoles via Reductive Cyclization and Alkyne Insertion. ACS COMBINATORIAL SCIENCE 2018; 20:156-163. [PMID: 29381854 DOI: 10.1021/acscombsci.7b00170] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
A novel and efficient method for the one-pot synthesis of 2 H-indazole from readily available building blocks is reported. The reaction of 2-nitrobenzylamines with zinc and ammonium formate underwent partial reduction to nitroso-benzylamine followed by an intramolecular cyclization to afford 2 H-indazole via N-N bond formation. The carboxylic acid moiety of indazole was proceeded to regioselective alkyne insertion under ruthenium catalysis to form pyranone-fused indazoles. The regioselectivity is influenced by the weak coordination of indazole ring nitrogen to the metal center.
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Affiliation(s)
- Tz-Yi Wu
- Department of Applied Chemistry, National Chiao-Tung University, 1001, Ta-Hseuh Road, Hsinchu 300-10, Taiwan
| | - Sandip Dhole
- Department of Applied Chemistry, National Chiao-Tung University, 1001, Ta-Hseuh Road, Hsinchu 300-10, Taiwan
| | - Manikandan Selvaraju
- Department of Applied Chemistry, National Chiao-Tung University, 1001, Ta-Hseuh Road, Hsinchu 300-10, Taiwan
| | - Chung-Ming Sun
- Department of Applied Chemistry, National Chiao-Tung University, 1001, Ta-Hseuh Road, Hsinchu 300-10, Taiwan
- Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, 100, Shih-Chuan first Road, Kaohsiung 807-08, Taiwan
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36
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An efficient and inexpensive visible light photoredox copper catalyst for N–N bond-forming reactions: the one-pot synthesis of indazolo[2,3-α]quinolines. JOURNAL OF THE IRANIAN CHEMICAL SOCIETY 2018. [DOI: 10.1007/s13738-018-1295-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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37
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Yi X, Jiao L, Xi C. I 2-Mediated 2H-indazole synthesis via halogen-bond-assisted benzyl C-H functionalization. Org Biomol Chem 2018; 14:9912-9918. [PMID: 27714284 DOI: 10.1039/c6ob01827k] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
I2-Mediated benzyl C-H functionalization has been developed for the synthesis of 2H-indazoles, which features high efficiency, simple conditions and no need for metals. Mechanistic experiments and DFT calculations have revealed halogen bond assistance and a radical chain process for this reaction. The azo group and the bound iodine cooperate in the hydrogen abstraction step, which circumvents the thermodynamic disfavor of direct hydrogen abstraction by a simple iodine radical.
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Affiliation(s)
- Xiangli Yi
- Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology (Ministry of Education), Department of Chemistry, Tsinghua University, Beijing 100084, China.
| | - Lei Jiao
- Center of Basic Molecular Science (CBMS), Department of Chemistry, Tsinghua University, Beijing 100084, China
| | - Chanjuan Xi
- Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology (Ministry of Education), Department of Chemistry, Tsinghua University, Beijing 100084, China. and State Key Laboratory of Elemento-Organic Chemistry, Nankai University, Tianjin 300071, China
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38
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Almendros P, Yanai H, Hoshikawa S, Aragoncillo C, Lázaro-Milla C, Toledano-Pinedo M, Matsumoto T, Alcaide B. Transition metal-free controlled synthesis of bis[(trifluoromethyl)sulfonyl]ethyl-decorated heterocycles. Org Chem Front 2018. [DOI: 10.1039/c8qo00955d] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
The metal- and irradiation-free C–H bis(triflyl)ethylation reactions of a variety of heterocycles including marketed drugs have been accomplished.
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Affiliation(s)
- Pedro Almendros
- Instituto de Química Orgánica General
- Consejo Superior de Investigaciones Científicas
- IQOG-CSIC
- 28006 Madrid
- Spain
| | - Hikaru Yanai
- School of Pharmacy
- Tokyo University of Pharmacy and Life Sciences
- Tokyo 192-0392
- Japan
| | - Shoki Hoshikawa
- School of Pharmacy
- Tokyo University of Pharmacy and Life Sciences
- Tokyo 192-0392
- Japan
| | - Cristina Aragoncillo
- Grupo de Lactamas y Heterociclos Bioactivos
- Departamento de Química Orgánica I
- Unidad Asociada al CSIC
- Facultad de Química
- Universidad Complutense de Madrid
| | - Carlos Lázaro-Milla
- Grupo de Lactamas y Heterociclos Bioactivos
- Departamento de Química Orgánica I
- Unidad Asociada al CSIC
- Facultad de Química
- Universidad Complutense de Madrid
| | - Mireia Toledano-Pinedo
- Grupo de Lactamas y Heterociclos Bioactivos
- Departamento de Química Orgánica I
- Unidad Asociada al CSIC
- Facultad de Química
- Universidad Complutense de Madrid
| | - Takashi Matsumoto
- School of Pharmacy
- Tokyo University of Pharmacy and Life Sciences
- Tokyo 192-0392
- Japan
| | - Benito Alcaide
- Grupo de Lactamas y Heterociclos Bioactivos
- Departamento de Química Orgánica I
- Unidad Asociada al CSIC
- Facultad de Química
- Universidad Complutense de Madrid
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39
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Synthesis and Biological Evaluation of 2H-Indazole Derivatives: Towards Antimicrobial and Anti-Inflammatory Dual Agents. Molecules 2017; 22:molecules22111864. [PMID: 29088121 PMCID: PMC6150295 DOI: 10.3390/molecules22111864] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2017] [Revised: 10/27/2017] [Accepted: 10/27/2017] [Indexed: 01/31/2023] Open
Abstract
Indazole is considered a very important scaffold in medicinal chemistry. It is commonly found in compounds with diverse biological activities, e.g., antimicrobial and anti-inflammatory agents. Considering that infectious diseases are associated to an inflammatory response, we designed a set of 2H-indazole derivatives by hybridization of cyclic systems commonly found in antimicrobial and anti-inflammatory compounds. The derivatives were synthesized and tested against selected intestinal and vaginal pathogens, including the protozoa Giardia intestinalis, Entamoeba histolytica, and Trichomonas vaginalis; the bacteria Escherichia coli and Salmonella enterica serovar Typhi; and the yeasts Candida albicans and Candida glabrata. Biological evaluations revealed that synthesized compounds have antiprotozoal activity and, in most cases, are more potent than the reference drug metronidazole, e.g., compound 18 is 12.8 times more active than metronidazole against G. intestinalis. Furthermore, two 2,3-diphenyl-2H-indazole derivatives (18 and 23) showed in vitro growth inhibition against Candida albicans and Candida glabrata. In addition to their antimicrobial activity, the anti-inflammatory potential for selected compounds was evaluated in silico and in vitro against human cyclooxygenase-2 (COX-2). The results showed that compounds 18, 21, 23, and 26 display in vitro inhibitory activity against COX-2, whereas docking calculations suggest a similar binding mode as compared to rofecoxib, the crystallographic reference.
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40
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Champagne PA, Houk KN. Influence of Endo- and Exocyclic Heteroatoms on Stabilities and 1,3-Dipolar Cycloaddition Reactivities of Mesoionic Azomethine Ylides and Imines. J Org Chem 2017; 82:10980-10988. [PMID: 28876936 DOI: 10.1021/acs.joc.7b01928] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The geometries, stabilities, and 1,3-dipolar cycloaddition reactivities of 24 mesoionic azomethine ylides and imines were investigated using density functional theory calculations at the M06-2X/6-311+G-(d,p)/M06-2X/6-31G-(d) level. The computed structures highlight how the commonly used "aromatic" resonance form should be replaced by two more accurate resonance structures. Stabilities of the dipoles were assessed by various homodesmotic schemes and are consistent with these compounds being nonaromatic. The activation free energies with ethylene or acetylene range from 11.8 to 36.6 kcal/mol. Within each dipole type, the predicted cycloaddition reactivities correlate with the reaction energies and the resonance stabilization energies provided by the various substituents. Endocyclic (X) heteroatoms increase the reactivity of the 1,3-dipoles in the order of O > NH ≅ S, whereas exocyclic (Y) substituents increase it in the order of CH2 > NH > O > S. Distortion/interaction analysis indicated that the difference in reactivity between differently substituted 1,3-dipoles is driven by distortion, whereas the difference between azomethine ylides and imines is related to lower interaction energies of imines with the dipolarophiles.
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Affiliation(s)
- Pier Alexandre Champagne
- Department of Chemistry and Biochemistry, University of California , Los Angeles, California 90095, United States
| | - K N Houk
- Department of Chemistry and Biochemistry, University of California , Los Angeles, California 90095, United States
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41
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Narayanam MK, Ma G, Champagne PA, Houk KN, Murphy JM. Synthesis of [ 18 F]Fluoroarenes by Nucleophilic Radiofluorination of N-Arylsydnones. Angew Chem Int Ed Engl 2017; 56:13006-13010. [PMID: 28834065 PMCID: PMC5674999 DOI: 10.1002/anie.201707274] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2017] [Revised: 08/17/2017] [Indexed: 11/08/2022]
Abstract
A practical method for radiofluorination of anilines with [18 F]fluoride via N-arylsydnone intermediates is described. These precursors are stable, easy to handle and facilitate direct and regioselective 18 F-labeling to prepare [18 F]fluoroarenes. The value of this methodology is further highlighted by successful application to prepare an 18 F-labeled neuropeptide.
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Affiliation(s)
- Maruthi Kumar Narayanam
- Department of Molecular and Medical Pharmacology and Crump Institute for Molecular Imaging, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA, 90095, USA
| | - Gaoyuan Ma
- Department of Molecular and Medical Pharmacology and Crump Institute for Molecular Imaging, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA, 90095, USA
| | - Pier Alexandre Champagne
- Department of Chemistry and Biochemistry, and Department of Chemical and Biomolecular Engineering, University of California, Los Angeles, Los Angeles, CA, 90095, USA
| | - Kendall N Houk
- Department of Chemistry and Biochemistry, and Department of Chemical and Biomolecular Engineering, University of California, Los Angeles, Los Angeles, CA, 90095, USA
| | - Jennifer M Murphy
- Department of Molecular and Medical Pharmacology and Crump Institute for Molecular Imaging, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA, 90095, USA
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42
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Narayanam MK, Ma G, Champagne PA, Houk KN, Murphy JM. Synthesis of [18F]Fluoroarenes by Nucleophilic Radiofluorination ofN-Arylsydnones. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201707274] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Maruthi Kumar Narayanam
- Department of Molecular and Medical Pharmacology and Crump Institute for Molecular Imaging; David Geffen School of Medicine; University of California, Los Angeles; Los Angeles CA 90095 USA
| | - Gaoyuan Ma
- Department of Molecular and Medical Pharmacology and Crump Institute for Molecular Imaging; David Geffen School of Medicine; University of California, Los Angeles; Los Angeles CA 90095 USA
| | - Pier Alexandre Champagne
- Department of Chemistry and Biochemistry, and Department of Chemical and Biomolecular Engineering; University of California, Los Angeles; Los Angeles CA 90095 USA
| | - Kendall N. Houk
- Department of Chemistry and Biochemistry, and Department of Chemical and Biomolecular Engineering; University of California, Los Angeles; Los Angeles CA 90095 USA
| | - Jennifer M. Murphy
- Department of Molecular and Medical Pharmacology and Crump Institute for Molecular Imaging; David Geffen School of Medicine; University of California, Los Angeles; Los Angeles CA 90095 USA
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43
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El-Dakdouki MH, Hussein A, Abdallah H, Shatila R, Mouneimne Y. Synthesis of novel 2H-indazole analogues via the Davis-Beirut reaction and conjugation onto magnetic nanoparticles. Tetrahedron 2017. [DOI: 10.1016/j.tet.2017.08.027] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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44
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Long Z, Yang Y, You J. Rh(III)-Catalyzed [4 + 1]-Annulation of Azoxy Compounds with Alkynes: A Regioselective Approach to 2H-Indazoles. Org Lett 2017; 19:2781-2784. [DOI: 10.1021/acs.orglett.7b00982] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- Zhen Long
- Key Laboratory of Green Chemistry
and Technology of Ministry of Education, College of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu 610064, P.R. China
| | - Yudong Yang
- Key Laboratory of Green Chemistry
and Technology of Ministry of Education, College of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu 610064, P.R. China
| | - Jingsong You
- Key Laboratory of Green Chemistry
and Technology of Ministry of Education, College of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu 610064, P.R. China
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45
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Sharghi H, Aberi M, Shiri P. Highly reusable support‐free copper(II) complex of
para
‐hydroxy‐substituted salen: Novel, efficient and versatile catalyst for C─N bond forming reactions. Appl Organomet Chem 2017. [DOI: 10.1002/aoc.3761] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Hashem Sharghi
- Department of ChemistryShiraz University Shiraz 71454 Iran
| | - Mahdi Aberi
- Department of ChemistryShiraz University Shiraz 71454 Iran
| | - Pezhman Shiri
- Department of ChemistryShiraz University Shiraz 71454 Iran
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46
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Schoene J, Bel Abed H, Christmann M, Nazaré M. A straightforward approach to N -substituted-2 H -indazol-2-amines through reductive cyclization. Tetrahedron Lett 2017. [DOI: 10.1016/j.tetlet.2017.03.031] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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47
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Sudhapriya N, Balachandran C, Awale S, Perumal PT. Sn(ii)-Mediated facile approach for the synthesis of 2-aryl-2H-indazole-3-phosphonates and their anticancer activities. NEW J CHEM 2017. [DOI: 10.1039/c7nj00843k] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
The efficient synthesis of 2-aryl-2H-indazole-3-phosphonates has been achieved successfully via a SnCl2·2H2O mediated one-pot method.
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Affiliation(s)
- N. Sudhapriya
- Organic Chemistry Division
- CSIR-Central Leather Research Institute
- Chennai 600 020
- India
- Department of Chemistry
| | - C. Balachandran
- Division of Natural Drug Discovery
- Department of Translational Research
- Institute of Natural Medicine
- University of Toyama
- Toyama 930-0194
| | - S. Awale
- Division of Natural Drug Discovery
- Department of Translational Research
- Institute of Natural Medicine
- University of Toyama
- Toyama 930-0194
| | - P. T. Perumal
- Organic Chemistry Division
- CSIR-Central Leather Research Institute
- Chennai 600 020
- India
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48
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Li L, Wang H, Yang X, Kong L, Wang F, Li X. Rhodium-Catalyzed Oxidative Synthesis of Quinoline-Fused Sydnones via 2-fold C–H Bond Activation. J Org Chem 2016; 81:12038-12045. [DOI: 10.1021/acs.joc.6b02356] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Lei Li
- Dalian Institute of Chemical
Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - He Wang
- Dalian Institute of Chemical
Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Xifa Yang
- Dalian Institute of Chemical
Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Lingheng Kong
- Dalian Institute of Chemical
Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Fen Wang
- Dalian Institute of Chemical
Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Xingwei Li
- Dalian Institute of Chemical
Physics, Chinese Academy of Sciences, Dalian 116023, China
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49
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Bel Abed H, Schoene J, Christmann M, Nazaré M. Organophosphorus-mediated N-N bond formation: facile access to 3-amino-2H-indazoles. Org Biomol Chem 2016; 14:8520-8. [PMID: 27541713 DOI: 10.1039/c6ob01544a] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A convenient and efficient strategy has been devised to access 3-amino-2H-indazole derivatives in two steps from readily available starting materials. The conversion of 2-nitrobenzonitriles to substituted benzamidines followed by an organophosphorus-mediated reductive cyclization and a subsequent N-N bond formation afforded 3-amino-2H-indazoles in good to excellent yields.
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Affiliation(s)
- Hassen Bel Abed
- Leibniz-Institut für Molekulare Pharmakologie (FMP), Campus Berlin-Buch, Robert-Roessle-Str. 10, 13125 Berlin, Germany.
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50
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Ikawa T, Masuda S, Takagi A, Akai S. 1,3- and 1,4-Benzdiyne equivalents for regioselective synthesis of polycyclic heterocycles. Chem Sci 2016; 7:5206-5211. [PMID: 30155171 PMCID: PMC6020534 DOI: 10.1039/c6sc00798h] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2016] [Accepted: 04/15/2016] [Indexed: 12/30/2022] Open
Abstract
We have devised a novel 1,3-benzdiyne equivalent, capable of quadruple functionalization by sequential benzyne generation and reaction with arynophiles. The key features of this method include the chemoselective generation of two triple bonds in a single benzene ring under fluoride-mediated mild conditions, and the regiocontrol of each benzyne reaction by the substituent next to the triple bond. This method produced various benzo-fused heteroaromatic compounds via reactions with arynophiles, such as furans, azides, and diazo compounds. A validation of the method is given in the convergent synthesis of the antipsychotic drug risperidone. A similar strategy has also been applied to a 1,4-benzdiyne equivalent to construct linearly benzo-fused heteroaromatics.
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Affiliation(s)
- Takashi Ikawa
- Graduate School of Pharmaceutical Sciences , Osaka University , 1-6 Yamadaoka , Suita , Osaka 565-0871 , Japan . ;
| | - Shigeaki Masuda
- Graduate School of Pharmaceutical Sciences , Osaka University , 1-6 Yamadaoka , Suita , Osaka 565-0871 , Japan . ;
| | - Akira Takagi
- Graduate School of Pharmaceutical Sciences , Osaka University , 1-6 Yamadaoka , Suita , Osaka 565-0871 , Japan . ;
| | - Shuji Akai
- Graduate School of Pharmaceutical Sciences , Osaka University , 1-6 Yamadaoka , Suita , Osaka 565-0871 , Japan . ;
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