1
|
Maspero A, Vavassori F, Nardo L, Vesco G, Vitillo JG, Penoni A. Synthesis, Characterization, Fluorescence Properties, and DFT Modeling of Difluoroboron Biindolediketonates. Molecules 2023; 28:4688. [PMID: 37375243 DOI: 10.3390/molecules28124688] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2023] [Revised: 06/02/2023] [Accepted: 06/07/2023] [Indexed: 06/29/2023] Open
Abstract
We report a simple and efficient strategy to enhance the fluorescence of biocompatible biindole diketonates (bdks) in the visible spectrum through difluoroboronation (BF2bdks complexes). Emission spectroscopy testifies an increase in the fluorescence quantum yields from a few percent to as much as >0.7. This massive increment is essentially independent of substitutions at the indole (-H, -Cl, and -OCH3) and corresponds to a significant stabilization of the excited state with respect to non-radiative decay mechanisms: the non-radiative decay rates are reduced by as much as an order of magnitude, from 109 s-1 to 108 s-1, upon difluoroboronation. The stabilization of the excited state is large enough to enable sizeable 1O2 photosensitized production. Different time-dependent (TD) density functional theory (DFT) methods were assessed in their ability to model the electronic properties of the compounds, with TD-B3LYP-D3 providing the most accurate excitation energies. The calculations associate the first active optical transition in both the bdks and BF2bdks electronic spectra to the S0 → S1 transition, corresponding to a shift in the electronic density from the indoles to the oxygens or the O-BF2-O unit, respectively.
Collapse
Affiliation(s)
- Angelo Maspero
- Department of Science and High Technology and INSTM, University of Insubria, Via Valleggio 9, 22100 Como, Italy
| | - Federico Vavassori
- Department of Science and High Technology and INSTM, University of Insubria, Via Valleggio 9, 22100 Como, Italy
| | - Luca Nardo
- Department of Science and High Technology and INSTM, University of Insubria, Via Valleggio 9, 22100 Como, Italy
| | - Guglielmo Vesco
- Department of Science and High Technology and INSTM, University of Insubria, Via Valleggio 9, 22100 Como, Italy
| | - Jenny G Vitillo
- Department of Science and High Technology and INSTM, University of Insubria, Via Valleggio 9, 22100 Como, Italy
| | - Andrea Penoni
- Department of Science and High Technology and INSTM, University of Insubria, Via Valleggio 9, 22100 Como, Italy
| |
Collapse
|
2
|
Bobrov PS, Kirik SD, Peterson IV, Suboch GA. Regioselective synthesis of novel nitroso-pyrazolylquinoxalines via HOAc-mediated cyclocondensation of 2-hydroxyimino-1,3-diketones with hydrazinylquinoxalines. Org Biomol Chem 2023; 21:3604-3614. [PMID: 37051859 DOI: 10.1039/d3ob00356f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/14/2023]
Abstract
This article describes the regioselective synthesis of novel nitroso-pyrazolylquinoxalines via cyclocondensation of 2-hydroxyimino-1,3-diketones with hydrazinylquinoxalines. Of note, this is the first time that 2-hydroxyimino-1,3-diketones are used as electrophilic reagents to cyclocondensation with hetarylhydrazines. The cyclocondensation proceeded through a hydrazone intermediates formation. A series of novel nitroso-substituted pyrazolylquinoxalines were synthesized by both "one-pot" and "two-step" procedures in up to 86% yields. Importantly, a gram-scale synthesis of nitroso-pyrazolylquinoxalines, their oxidation and reduction were successfully accomplished.
Collapse
Affiliation(s)
- Pavel S Bobrov
- Department of Organic Chemistry and Technology of Organic Substances, Reshetnev Siberian State University of Science and Technology, 31, Krasnoyarskii Rabochii prospekt, Krasnoyarsk 660037, Russian Federation.
| | - Sergei D Kirik
- Department of Inorganic and Physical Chemistry, Siberian Federal University, 79, Svobodny Av., Krasnoyarsk 660041, Russian Federation
- Laboratory of Molecular Spectroscopy and Analysis, Institute of Chemistry and Chemical Technology SB RAS, Federal Research Center 'Krasnoyarsk Science Center SB RAS', 50/24 Akademgorodok, Krasnoyarsk 660036, Russian Federation
| | - Ivan V Peterson
- Laboratory of Molecular Spectroscopy and Analysis, Institute of Chemistry and Chemical Technology SB RAS, Federal Research Center 'Krasnoyarsk Science Center SB RAS', 50/24 Akademgorodok, Krasnoyarsk 660036, Russian Federation
| | - Georgii A Suboch
- Department of Organic Chemistry and Technology of Organic Substances, Reshetnev Siberian State University of Science and Technology, 31, Krasnoyarskii Rabochii prospekt, Krasnoyarsk 660037, Russian Federation.
| |
Collapse
|
3
|
Geng H, Chen F, Zhao Y, Guo B, Tang L, Yang YY. Protecting-Group-Free Synthesis of Meridianin A-G and Derivatives and Its Antibiofilm Evaluation. J Org Chem 2023; 88:3927-3934. [PMID: 36815756 DOI: 10.1021/acs.joc.2c02837] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/24/2023]
Abstract
Herein, a protecting-group-free protocol was developed to realize a time and step economy diversification of the Meridianin alkaloid. A broad range of substituents are tolerated to deliver the products in moderate to high yields, and the first synthesis of Meridianin B was achieved. The simplicity of this protocol enables the rapid construction of a Meridianin derivative library for antibiofilm evaluation. Preliminary results reveal that Meridianin derivatives were capable of inhibiting the Acinetobacter baumannii biofilm and lowering the antibiotic MIC synergistically.
Collapse
Affiliation(s)
- Huidan Geng
- School of Pharmacy, Guizhou Provincial Engineering Technology Research Center for Chemical Drug R&D, Guizhou Medical University, 550014 Guiyang, P. R. China
| | - Fei Chen
- School of Pharmacy, Guizhou Provincial Engineering Technology Research Center for Chemical Drug R&D, Guizhou Medical University, 550014 Guiyang, P. R. China
| | - Yonglong Zhao
- School of Pharmacy, Guizhou Provincial Engineering Technology Research Center for Chemical Drug R&D, Guizhou Medical University, 550014 Guiyang, P. R. China
| | - Bing Guo
- Guizhou Provincial Key Laboratory of Pathogenesis and Drug Research on Common Chronic Diseases, Guizhou Medical University, 550004 Guiyang, P. R. China
| | - Lei Tang
- School of Pharmacy, Guizhou Provincial Engineering Technology Research Center for Chemical Drug R&D, Guizhou Medical University, 550014 Guiyang, P. R. China
| | - Yuan-Yong Yang
- School of Pharmacy, Guizhou Provincial Engineering Technology Research Center for Chemical Drug R&D, Guizhou Medical University, 550014 Guiyang, P. R. China
| |
Collapse
|
4
|
Kruppa M, Müller TJJ. A Survey on the Synthesis of Variolins, Meridianins, and Meriolins-Naturally Occurring Marine (aza)Indole Alkaloids and Their Semisynthetic Derivatives. Molecules 2023; 28:molecules28030947. [PMID: 36770618 PMCID: PMC9920529 DOI: 10.3390/molecules28030947] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2022] [Revised: 01/15/2023] [Accepted: 01/16/2023] [Indexed: 01/19/2023] Open
Abstract
Marine natural products are a source of essential significance due to a plethora of highly diverse biological properties. The naturally occurring (aza)indole alkaloids variolin B (1), meridianins (2), and their synthetic hybrids meriolins (3) exhibit potent kinase inhibitory activities and have aroused considerable interest in the past two decades. Therefore, the immense demand for versatile synthetic accesses to these structures has considerably increased. This review surveys the synthetic pathways to these naturally occurring alkaloids and their semisynthetic derivatives.
Collapse
|
5
|
Kurashov IA, Kharlamova AD, Abel AS, Averin AD, Beletskaya IP. Polyoxa- and Polyazamacrocycles Incorporating 6,7-Diaminoquinoxaline Moiety: Synthesis and Application as Tunable Optical pH-Indicators in Aqueous Solution. MOLECULES (BASEL, SWITZERLAND) 2023; 28:molecules28020512. [PMID: 36677571 PMCID: PMC9866286 DOI: 10.3390/molecules28020512] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/15/2022] [Revised: 12/27/2022] [Accepted: 12/28/2022] [Indexed: 01/06/2023]
Abstract
Synthetic approach to fluorescent polyaza- and polyoxadiazamacrocycles comprising a structural fragment of 6,7-diamino-2,3-diphenylquinoxaline has been elaborated using Pd-catalyzed amination providing target compounds in yields up to 77%. A series of nine novel N- and N,O-containing macrocyclic ligands differing by the number of donor sites and cavity size has been obtained. These compounds possess well-pronounced fluorescent properties with emission maxima in a blue region in aprotic solvents and high quantum yields of fluorescence, while in proton media, fluorescence shifts towards the green region of the spectrum. Using macrocycles 5c and 5e as examples, we have shown that such compounds can serve as dual-channel (colorimetric and fluorimetric) pH indicators in water media, with pH transition point and response being dependent on the macrocycle structure due to different sequences of protonation steps.
Collapse
Affiliation(s)
- Igor A. Kurashov
- Department of Chemistry, Lomonosov Moscow State University, Leninskie Gory, 1-3, Moscow 119991, Russia
| | - Alisa D. Kharlamova
- Department of Chemistry, Lomonosov Moscow State University, Leninskie Gory, 1-3, Moscow 119991, Russia
| | - Anton S. Abel
- Department of Chemistry, Lomonosov Moscow State University, Leninskie Gory, 1-3, Moscow 119991, Russia
- Correspondence: (A.S.A.); (A.D.A.)
| | - Alexei D. Averin
- Department of Chemistry, Lomonosov Moscow State University, Leninskie Gory, 1-3, Moscow 119991, Russia
- Correspondence: (A.S.A.); (A.D.A.)
| | - Irina P. Beletskaya
- Department of Chemistry, Lomonosov Moscow State University, Leninskie Gory, 1-3, Moscow 119991, Russia
- Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, Leninsky Pr. 31, Moscow 119071, Russia
| |
Collapse
|
6
|
Xiao L. A Review: Meridianins and Meridianins Derivatives. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27248714. [PMID: 36557848 PMCID: PMC9781522 DOI: 10.3390/molecules27248714] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/15/2022] [Revised: 11/28/2022] [Accepted: 11/29/2022] [Indexed: 12/13/2022]
Abstract
Meridianins are a family of indole alkaloids derived from Antarctic tunicates with extensive pharmacological activities. A series of meridianin derivatives had been synthesized by drug researchers. This article reviews the extraction and purification methods, biological activities and pharmacological applications, pharmacokinetic characters and chemical synthesis of meridianins and their derivatives. And prospects on discovering new bioactivities of meridianins and optimizing their structure for the improvement of the ADMET properties are provided.
Collapse
Affiliation(s)
- Linxia Xiao
- School of Pharmacology, Jiangsu Vocational College of Medicine, Yancheng 224005, China
| |
Collapse
|
7
|
Concise Syntheses of Marine (Bis)indole Alkaloids Meridianin C, D, F, and G and Scalaridine A via One-Pot Masuda Borylation-Suzuki Coupling Sequence. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27072233. [PMID: 35408633 PMCID: PMC9000334 DOI: 10.3390/molecules27072233] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/01/2022] [Revised: 03/18/2022] [Accepted: 03/25/2022] [Indexed: 11/16/2022]
Abstract
N-Protected 3-iodoindoles were reacted with (di)azine halides in a sequentially Pd-catalyzed one-pot fashion, i.e., by Masuda borylation–Suzuki coupling (MBSC) sequence. This methodology was successfully applied to the concise syntheses of marine indole alkaloids meridianin C, D, F, and G, as well as to the bisindole alkaloid scalaridine A, which were obtained in moderate to excellent yield.
Collapse
|
8
|
Dutysheva EA, Utepova IA, Trestsova MA, Anisimov AS, Charushin VN, Chupakhin ON, Margulis BA, Guzhova IV, Lazarev VF. Synthesis and approbation of new neuroprotective chemicals of pyrrolyl- and indolylazine classes in a cell model of Alzheimer's disease. Eur J Med Chem 2021; 222:113577. [PMID: 34087544 DOI: 10.1016/j.ejmech.2021.113577] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2021] [Revised: 05/18/2021] [Accepted: 05/19/2021] [Indexed: 12/19/2022]
Abstract
One of the major causes of neurodegeneration in the pathogenesis of Alzheimer's disease is the accumulation of cytotoxic amyloid species within the intercellular compartments of the brain. The efficacy of the anti-proteotoxic mechanism based on the molecular chaperones Hsp70 and Hsp90 in numerous types of neurons is often low, while its pharmacological enhancement has been shown to ameliorate the physiological and cognitive functions of the brain. Suggesting that the chemicals able to induce heat shock protein synthesis and therefore rescue neural cells from cytotoxicity associated with amyloid, we have synthesized a group of pyrrolyl- and indolylazines that cause the accumulation of heat shock proteins, using a novel method of photocatalysis that is employed in green chemistry. The selected compounds were tested in a cell model of Alzheimer's disease and demonstrated a pronounced neuroprotective effect. These substances increased the survival of neurons, blocked the activation of β-galactosidase, and prevented apoptosis in neurons cultured in the presence of β-amyloid.
Collapse
Affiliation(s)
| | - Irina A Utepova
- Ural Federal University, Ekaterinburg, 620002, Russia; Postovsky Institute of Organic Synthesis, Ural Branch of the Russian Academy of Sciences, Ekaterinburg, 620108, Russia
| | - Maria A Trestsova
- Ural Federal University, Ekaterinburg, 620002, Russia; Postovsky Institute of Organic Synthesis, Ural Branch of the Russian Academy of Sciences, Ekaterinburg, 620108, Russia
| | - Alexander S Anisimov
- Institute of Cytology, Russian Academy of Sciences, St. Petersburg, 194064, Russia
| | - Valery N Charushin
- Ural Federal University, Ekaterinburg, 620002, Russia; Postovsky Institute of Organic Synthesis, Ural Branch of the Russian Academy of Sciences, Ekaterinburg, 620108, Russia
| | - Oleg N Chupakhin
- Ural Federal University, Ekaterinburg, 620002, Russia; Postovsky Institute of Organic Synthesis, Ural Branch of the Russian Academy of Sciences, Ekaterinburg, 620108, Russia
| | - Boris A Margulis
- Institute of Cytology, Russian Academy of Sciences, St. Petersburg, 194064, Russia
| | - Irina V Guzhova
- Institute of Cytology, Russian Academy of Sciences, St. Petersburg, 194064, Russia
| | - Vladimir F Lazarev
- Institute of Cytology, Russian Academy of Sciences, St. Petersburg, 194064, Russia.
| |
Collapse
|
9
|
Priority directions in the design of biologically active compounds based on 2-aminopyrimidin-4(3H)-one and its derivatives. Chem Heterocycl Compd (N Y) 2021. [DOI: 10.1007/s10593-021-02875-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
10
|
Mavreas KF, Neofytos DD, Chrysina ED, Venturini A, Gimisis T. Synthesis, Kinetic and Conformational Studies of 2-Substituted-5-(β-d-glucopyranosyl)-pyrimidin-4-ones as Potential Inhibitors of Glycogen Phosphorylase. Molecules 2020; 25:molecules25225463. [PMID: 33266408 PMCID: PMC7700572 DOI: 10.3390/molecules25225463] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2020] [Revised: 11/16/2020] [Accepted: 11/19/2020] [Indexed: 12/30/2022] Open
Abstract
Dysregulation of glycogen phosphorylase, an enzyme involved in glucose homeostasis, may lead to a number of pathological states such as type 2 diabetes and cancer, making it an important molecular target for the development of new forms of pharmaceutical intervention. Based on our previous work on the design and synthesis of 4-arylamino-1-(β-d-glucopyranosyl)pyrimidin-2-ones, which inhibit the activity of glycogen phosphorylase by binding at its catalytic site, we report herein a general synthesis of 2-substituted-5-(β-d-glucopyranosyl)pyrimidin-4-ones, a related class of metabolically stable, C-glucosyl-based, analogues. The synthetic development consists of a metallated heterocycle, produced from 5-bromo-2-methylthiouracil, in addition to protected d-gluconolactone, followed by organosilane reduction. The methylthio handle allowed derivatization through hydrolysis, ammonolysis and arylamine substitution, and the new compounds were found to be potent (μM) inhibitors of rabbit muscle glycogen phosphorylase. The results were interpreted with the help of density functional theory calculations and conformational analysis and were compared with previous findings.
Collapse
Affiliation(s)
- Konstantinos F. Mavreas
- Laboratory of Organic Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, 15784 Athens, Greece;
| | - Dionysios D. Neofytos
- Institute of Chemical Biology, National Hellenic Research Foundation, 11635 Athens, Greece;
| | - Evangelia D. Chrysina
- Institute of Chemical Biology, National Hellenic Research Foundation, 11635 Athens, Greece;
- Correspondence: (E.D.C.); (A.V.); (T.G.)
| | - Alessandro Venturini
- Istituto ISOF, Consiglio Nazionale delle Ricerche, 40129 Bologna, Italy
- Correspondence: (E.D.C.); (A.V.); (T.G.)
| | - Thanasis Gimisis
- Laboratory of Organic Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, 15784 Athens, Greece;
- Correspondence: (E.D.C.); (A.V.); (T.G.)
| |
Collapse
|
11
|
Llorach-Pares L, Rodriguez-Urgelles E, Nonell-Canals A, Alberch J, Avila C, Sanchez-Martinez M, Giralt A. Meridianins and Lignarenone B as Potential GSK3β Inhibitors and Inductors of Structural Neuronal Plasticity. Biomolecules 2020; 10:E639. [PMID: 32326204 PMCID: PMC7226462 DOI: 10.3390/biom10040639] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2020] [Revised: 04/07/2020] [Accepted: 04/17/2020] [Indexed: 12/12/2022] Open
Abstract
Glycogen Synthase Kinase 3 (GSK3) is an essential protein, with a relevant role in many diseases such as diabetes, cancer and neurodegenerative disorders. Particularly, the isoform GSK3β is related to pathologies such as Alzheimer's disease (AD). This enzyme constitutes a very interesting target for the discovery and/or design of new therapeutic agents against AD due to its relation to the hyperphosphorylation of the microtubule-associated protein tau (MAPT), and therefore, its contribution to neurofibrillary tangles (NFT) formation. An in silico target profiling study identified two marine molecular families, the indole alkaloids meridianins from the tunicate genus Aplidium, and lignarenones, the secondary metabolites of the shelled cephalaspidean mollusc Scaphander lignarius, as possible GSK3β inhibitors. The analysis of the surface of GSK3β, aimed to find possible binding regions, and the subsequent in silico binding studies revealed that both marine molecular families can act over the ATP and/or substrate binding regions. The predicted inhibitory potential of the molecules from these two chemical families was experimentally validated in vitro by showing a ~50% of increased Ser9 phosphorylation levels of the GSK3β protein. Furthermore, we determined that molecules from both molecular families potentiate structural neuronal plasticity in vitro. These results allow us to suggest that meridianins and lignarenone B could be used as possible therapeutic candidates for the treatment of GSK3β involved pathologies, such as AD.
Collapse
Affiliation(s)
- Laura Llorach-Pares
- Department of Evolutionary Biology, Ecology and Environmental Sciences, Faculty of Biology and Biodiversity Research Institute (IRBio), Universitat de Barcelona, 08028 Barcelona, Catalonia, (Spain); (L.L.-P.); (C.A.)
- Mind the Byte S.L., 08007 Barcelona, Catalonia, Spain;
| | - Ened Rodriguez-Urgelles
- Departament de Biomedicina, Facultat de Medicina i Ciències de la Salut, Institut de Neurociències, Universitat de Barcelona, 08036 Barcelona, Spain; (E.R.-U.); (J.A.)
- Institut d’Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), 08036 Barcelona, Spain
- Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), 28031 Madrid, Spain
| | | | - Jordi Alberch
- Departament de Biomedicina, Facultat de Medicina i Ciències de la Salut, Institut de Neurociències, Universitat de Barcelona, 08036 Barcelona, Spain; (E.R.-U.); (J.A.)
- Institut d’Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), 08036 Barcelona, Spain
- Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), 28031 Madrid, Spain
- Production and Validation Center of Advanced Therapies (Creatio), Faculty of Medicine and Health Science, University of Barcelona, 08036 Barcelona, Spain
| | - Conxita Avila
- Department of Evolutionary Biology, Ecology and Environmental Sciences, Faculty of Biology and Biodiversity Research Institute (IRBio), Universitat de Barcelona, 08028 Barcelona, Catalonia, (Spain); (L.L.-P.); (C.A.)
| | | | - Albert Giralt
- Departament de Biomedicina, Facultat de Medicina i Ciències de la Salut, Institut de Neurociències, Universitat de Barcelona, 08036 Barcelona, Spain; (E.R.-U.); (J.A.)
- Institut d’Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), 08036 Barcelona, Spain
- Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), 28031 Madrid, Spain
| |
Collapse
|
12
|
Arce EM, Lamont SG, Davies PW. Sulfenyl Ynamides in Gold Catalysis: Synthesis of Oxo‐functionalised 4‐aminoimidazolyl Fused Compounds by Intermolecular Annulation Reactions. Adv Synth Catal 2020. [DOI: 10.1002/adsc.202000134] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Elsa M. Arce
- Haworth Building, School of ChemistryUniversity of Birmingham, Edgbaston. Birmingham B15 2TT U.K
| | - Scott G. Lamont
- Medicinal Chemistry, Research and Early DevelopmentOncology R&D, AstraZeneca Cambridge CB10 1XL UK
| | - Paul W. Davies
- Haworth Building, School of ChemistryUniversity of Birmingham, Edgbaston. Birmingham B15 2TT U.K
| |
Collapse
|
13
|
Neto JSS, Zeni G. Synthesis of indoles from alkynes and a nitrogen source under metal-free conditions. Org Biomol Chem 2020; 18:4906-4915. [DOI: 10.1039/d0ob00670j] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This review deals with the methodologies published in the last ten years, which used metal-free conditions to prepare indoles starting from alkynes and nitrogen compounds.
Collapse
Affiliation(s)
- Jose S. S. Neto
- Departamento de Química
- Universidade Federal de Santa Catarina
- Florianópolis
- Brazil
| | - Gilson Zeni
- Laboratorio de Sintese
- Reatividade
- Avaliaçao Farmacologica e Toxicologica de Organocalcogenios
- CCNE
- UFSM
| |
Collapse
|
14
|
Intrieri D, Carminati DM, Zardi P, Damiano C, Manca G, Gallo E, Mealli C. Indoles from Alkynes and Aryl Azides: Scope and Theoretical Assessment of Ruthenium Porphyrin-Catalyzed Reactions. Chemistry 2019; 25:16591-16605. [PMID: 31626355 DOI: 10.1002/chem.201904224] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2019] [Revised: 10/17/2019] [Indexed: 01/24/2023]
Abstract
A symbiotic experimental/computational study analyzed the Ru(TPP)(NAr)2 -catalyzed one-pot formation of indoles from alkynes and aryl azides. Thirty different C3 -substituted indoles were synthesized and the best performance, in term of yields and regioselectivities, was observed when reacting ArC≡CH alkynes with 3,5-(EWG)2 C6 H3 N3 azides, whereas the reaction was less efficient when using electron-rich aryl azides. A DFT analysis describes the reaction mechanism in terms of the energy costs and orbital/electronic evolutions; the limited reactivity of electron-rich azides was also justified. In summary, PhC≡CH alkyne interacts with one NAr imido ligand of Ru(TPP)(NAr)2 to give a residually dangling C(Ph) group, which, by coupling with a C(H) unit of the N-aryl substituent, forms a 5+6 bicyclic molecule. In the process, two subsequent spin changes allow inverting the conformation of the sp2 C(Ph) atom and its consequent electrophilic-like attack to the aromatic ring. The bicycle isomerizes to indole via a two-step outer sphere H-migration. Eventually, a 'Ru(TPP)(NAr)' mono-imido active catalyst is reformed after each azide/alkyne reaction.
Collapse
Affiliation(s)
- Daniela Intrieri
- Department of Chemistry, University of Milan, Via Golgi 19, 20133, Milan, Italy
| | - Daniela Maria Carminati
- Department of Chemistry, University of Rochester, 416 Hutchison Hall, New York, NY, 14627-0216, USA
| | - Paolo Zardi
- Department of Chemical Sciences, University of Padua, Via F. Marzolo 1, 35131, Padua, Italy
| | - Caterina Damiano
- Department of Chemistry, University of Milan, Via Golgi 19, 20133, Milan, Italy
| | - Gabriele Manca
- Istituto di Chimica dei Composti OrganoMetallici, ICCOM-CNR, Via Madonna del Piano 10, 50019, Sesto Fiorentino, Italy
| | - Emma Gallo
- Department of Chemistry, University of Milan, Via Golgi 19, 20133, Milan, Italy
| | - Carlo Mealli
- Istituto di Chimica dei Composti OrganoMetallici, ICCOM-CNR, Via Madonna del Piano 10, 50019, Sesto Fiorentino, Italy
| |
Collapse
|
15
|
Tan CY, Lu H, Zhang JL, Liu JY, Xu PF. Asymmetric Organocatalytic [4 + 1] Annulations Involving a Polarity Reversal Process: A Tandem Catalytic Approach to Highly Functionalized Spiropyrazolone Derivatives. J Org Chem 2019; 85:594-602. [DOI: 10.1021/acs.joc.9b02684] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Chang-Yin Tan
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
| | - Hong Lu
- Key Laboratory of Synthetic and Natural Functional Molecular Chemistry of the Ministry of Education, National Demonstration Center for Experimental Chemistry Education (Northwest University), College of Chemistry & Materials Science, Northwest University, Xi’an 710127, China
| | - Jia-Lu Zhang
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
| | - Jin-Yu Liu
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
| | - Peng-Fei Xu
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
| |
Collapse
|
16
|
Ferretti F, Ramadan DR, Ragaini F. Transition Metal Catalyzed Reductive Cyclization Reactions of Nitroarenes and Nitroalkenes. ChemCatChem 2019. [DOI: 10.1002/cctc.201901065] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Francesco Ferretti
- Dipartimento di ChimicaUniversità degli Studi di Milano via C. Golgi 19 Milano 20133 Italy
| | - Doaa R. Ramadan
- Dipartimento di ChimicaUniversità degli Studi di Milano via C. Golgi 19 Milano 20133 Italy
| | - Fabio Ragaini
- Dipartimento di ChimicaUniversità degli Studi di Milano via C. Golgi 19 Milano 20133 Italy
| |
Collapse
|
17
|
Ieronimo G, Palmisano G, Maspero A, Marzorati A, Scapinello L, Masciocchi N, Cravotto G, Barge A, Simonetti M, Ameta KL, Nicholas KM, Penoni A. A novel synthesis of N-hydroxy-3-aroylindoles and 3-aroylindoles. Org Biomol Chem 2019; 16:6853-6859. [PMID: 30065979 DOI: 10.1039/c8ob01471j] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
A straightforward indole synthesis via annulation of C-nitrosoaromatics with conjugated terminal alkynones was realised achieving a simple, highly regioselective, atom- and step economical access to 3-aroylindoles in moderate to good yields. Further functionalizations of indole scaffolds were investigated and an easy way to JWH-018, a synthetic cannabinoid, was achieved.
Collapse
Affiliation(s)
- Gabriella Ieronimo
- Dipartimento di Scienza e Alta Tecnologia, Università degli Studi dell'Insubria, via Valleggio 9, 22100, Como, Italy.
| | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
18
|
Li S, Yang W, Ji M, Cai J, Chen J. A new and efficient protocol for the synthesis of the key intermediate of Palbociclib. JOURNAL OF CHEMICAL RESEARCH 2019. [DOI: 10.1177/1747519819831858] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
A new and efficient synthesis of 6-bromo-8-cyclopentyl-5-methyl-2-(methylsulfinyl)-pyrido[2,3-d]pyrimidin-7(8H)-one, a key intermediate of Palbociclib, starting from thiouracil was described. This protocol involved methylation, nucleophilic substitution, bromination, nucleophilic substitution, Heck reaction, ring closure, oxidation, and bromination to afford a key intermediate of Palbociclib with approximately 35% overall yield. The advantages of this developed synthetic strategy included improved overall yield, inexpensive starting materials, and readily controllable and cleaner reaction conditions.
Collapse
Affiliation(s)
- Shuting Li
- School of Chemistry and Chemical Engineering, Southeast University, Nanjing, P.R. China
| | - Wanfeng Yang
- School of Chemistry and Chemical Engineering, Southeast University, Nanjing, P.R. China
| | - Min Ji
- School of Biological Science & Medical Engineering, Southeast University, Nanjing, P.R. China
| | - Jin Cai
- School of Chemistry and Chemical Engineering, Southeast University, Nanjing, P.R. China
| | - Junqing Chen
- School of Chemistry and Chemical Engineering, Southeast University, Nanjing, P.R. China
| |
Collapse
|
19
|
Synthesis of N,N-dialkyl-1-(2-alkylthiopyrimidin-4-yl)piperidin- 4-amines as potential heat shock protein inhibitors. Russ Chem Bull 2018. [DOI: 10.1007/s11172-018-2339-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
|
20
|
Yang Y, Zhang D, Xu M, Wang J, Chen J, Wang L. An NBD–NH2 fluorescent probe for bioimaging: existence of a specific detection of ClO−. MONATSHEFTE FUR CHEMIE 2018. [DOI: 10.1007/s00706-018-2143-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
|
21
|
Chemical Synthesis of Meridianins and Related Derivatives. ACTA ACUST UNITED AC 2017. [DOI: 10.1016/b978-0-444-63930-1.00005-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/24/2023]
|
22
|
C(2)-Functionalization of pyrimidin-4(3H)-one derivatives in the synthesis of its biologically active derivatives. Russ Chem Bull 2016. [DOI: 10.1007/s11172-015-1190-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
23
|
De Poli M, Zawodny W, Quinonero O, Lorch M, Webb SJ, Clayden J. Conformational photoswitching of a synthetic peptide foldamer bound within a phospholipid bilayer. Science 2016; 352:575-80. [PMID: 27033546 DOI: 10.1126/science.aad8352] [Citation(s) in RCA: 135] [Impact Index Per Article: 16.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2015] [Accepted: 02/24/2016] [Indexed: 12/17/2022]
Abstract
The dynamic properties of foldamers, synthetic molecules that mimic folded biomolecules, have mainly been explored in free solution. We report on the design, synthesis, and conformational behavior of photoresponsive foldamers bound in a phospholipid bilayer akin to a biological membrane phase. These molecules contain a chromophore, which can be switched between two configurations by different wavelengths of light, attached to a helical synthetic peptide that both promotes membrane insertion and communicates conformational change along its length. Light-induced structural changes in the chromophore are translated into global conformational changes, which are detected by monitoring the solid-state (19)F nuclear magnetic resonance signals of a remote fluorine-containing residue located 1 to 2 nanometers away. The behavior of the foldamers in the membrane phase is similar to that of analogous compounds in organic solvents.
Collapse
Affiliation(s)
- Matteo De Poli
- School of Chemistry, University of Manchester, Manchester M13 9PL, UK
| | - Wojciech Zawodny
- School of Chemistry, University of Manchester, Manchester M13 9PL, UK
| | - Ophélie Quinonero
- School of Chemistry, University of Manchester, Manchester M13 9PL, UK
| | - Mark Lorch
- Department of Chemistry, University of Hull, Hull HU6 7RX, UK
| | - Simon J Webb
- School of Chemistry, University of Manchester, Manchester M13 9PL, UK. Manchester Institute of Biotechnology, University of Manchester, Manchester M1 7DN, UK
| | - Jonathan Clayden
- School of Chemistry, University of Bristol, Bristol BS8 1TS, UK.
| |
Collapse
|
24
|
Shafiee B, Hadian L, Khosropour AR. An innovation for development of Erlenmeyer–Plöchl reaction and synthesis of AT-130 analogous: a new application of continuous-flow method. RSC Adv 2016. [DOI: 10.1039/c6ra00301j] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The first micro-flow Erlenmeyer–Plöchl azlactone reaction and synthesis of N-benzoylglycine carbamide were established.
Collapse
Affiliation(s)
| | - Laleh Hadian
- Department of Chemistry
- University of Isfahan
- Isfahan
- Iran
| | | |
Collapse
|
25
|
Vijay JT, Nagalingaiah NK, Nagarakere SC, Suresha G, Kanchugarakoppal RS, Kempegowda M. Concise synthesis of substituted meridianins. ACTA ACUST UNITED AC 2015. [DOI: 10.1080/23312009.2015.1083068] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- Jenifer T.A. Vijay
- Department of Studies in Chemistry, Manasagangothri, University of Mysore, Mysore 570006, India
| | | | - Sandhya C. Nagarakere
- Department of Studies in Chemistry, Manasagangothri, University of Mysore, Mysore 570006, India
| | - G.P. Suresha
- Department of Studies in Chemistry, Manasagangothri, University of Mysore, Mysore 570006, India
| | | | - Mantelingu Kempegowda
- Department of Studies in Chemistry, Manasagangothri, University of Mysore, Mysore 570006, India
| |
Collapse
|
26
|
A novel family of diarylpyrimidines (DAPYs) featuring a diatomic linker: Design, synthesis and anti-HIV activities. Bioorg Med Chem 2015; 23:6587-93. [DOI: 10.1016/j.bmc.2015.09.020] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2015] [Revised: 09/09/2015] [Accepted: 09/11/2015] [Indexed: 11/22/2022]
|
27
|
Affiliation(s)
- Kenneth M. Nicholas
- Department of Chemistry and
Biochemistry Stephenson Life Sciences Center, University of Oklahoma, 101 Stephenson Parkway, Norman, Oklahoma 73019, United States
| |
Collapse
|
28
|
Kancherla R, Naveen T, Maiti D. Divergent reactivity in palladium-catalyzed annulation with diarylamines and α,β-unsaturated acids: direct access to substituted 2-quinolinones and indoles. Chemistry 2015; 21:8723-6. [PMID: 25941155 DOI: 10.1002/chem.201501208] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2015] [Indexed: 12/20/2022]
Abstract
A palladium-catalyzed CH activation strategy has been successfully employed for exclusive synthesis of a variety of 3-substituted indoles. A [3+3] annulation for synthesizing substituted 2-quinolinones was recently developed by reaction of α,β-unsaturated carboxylic acids with diarylamines under acidic conditions. In the present work, an analogous [3+2] annulation is achieved from the same set of starting materials under basic conditions to generate 1,3-disubstituted indoles exclusively. Mechanistic studies revealed an ortho-palladation-π-coordination-β-migratory insertion-β-hydride elimination reaction sequence to be operative under the reaction conditions.
Collapse
Affiliation(s)
- Rajesh Kancherla
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai-400076 (India)
| | - Togati Naveen
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai-400076 (India)
| | - Debabrata Maiti
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai-400076 (India).
| |
Collapse
|
29
|
Zardi P, Savoldelli A, Carminati DM, Caselli A, Ragaini F, Gallo E. Indoles Rather than Triazoles from the Ruthenium Porphyrin-Catalyzed Reaction of Alkynes with Aryl Azides. ACS Catal 2014. [DOI: 10.1021/cs5012712] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Paolo Zardi
- Department
of Chemistry, University of Milan, Via Golgi 19, 20133 Milan, Milan, Italy
| | - Andrea Savoldelli
- Department
of Chemistry, University of Milan, Via Golgi 19, 20133 Milan, Milan, Italy
| | | | - Alessandro Caselli
- Department
of Chemistry, University of Milan, Via Golgi 19, 20133 Milan, Milan, Italy
| | - Fabio Ragaini
- Department
of Chemistry, University of Milan, Via Golgi 19, 20133 Milan, Milan, Italy
| | - Emma Gallo
- Department
of Chemistry, University of Milan, Via Golgi 19, 20133 Milan, Milan, Italy
| |
Collapse
|
30
|
|
31
|
Seerden JPG, Leusink-Ionescu G, Woudenberg-Vrenken T, Dros B, Molema G, Kamps JAAM, Kellogg RM. Synthesis and structure-activity relationships of 4-fluorophenyl-imidazole p38α MAPK, CK1δ and JAK2 kinase inhibitors. Bioorg Med Chem Lett 2014; 24:3412-8. [PMID: 24930833 DOI: 10.1016/j.bmcl.2014.05.080] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2014] [Revised: 05/20/2014] [Accepted: 05/22/2014] [Indexed: 01/11/2023]
Abstract
The synthesis and structure-activity relationships of novel 4-(4'-fluorophenyl)imidazoles as selective p38α MAPK, CK1δ and JAK2 inhibitors with improved water solubility are described. Microwave-assisted multicomponent reactions afforded 4-fluorophenyl-2,5-disubstituted imidazoles. Carboxylate and phosphonate groups were introduced via 'click' reactions. The kinase selectivity was influenced by the heteroaryl group at imidazole C-5 and the position of a carboxylic acid or tetrazole at imidazole C-2. For example, pyrimidines 15 and 34 inhibited p38α MAPK with IC50=250 nM and 96 nM, respectively. Pyridine 3 gave CK1δ inhibition with IC50=89 nM and pyridin-2-one 31 gave JAK2 inhibition with IC50=62 nM.
Collapse
Affiliation(s)
| | | | - Titia Woudenberg-Vrenken
- Laboratory for Endothelial Biomedicine & Vascular Drug Targeting Research, University Medical Center Groningen, University of Groningen, Hanzeplein 1, Groningen 9713 GZ, The Netherlands
| | - Bas Dros
- Syncom B.V., Kadijk 3, Groningen 9747 AT, The Netherlands
| | - Grietje Molema
- Laboratory for Endothelial Biomedicine & Vascular Drug Targeting Research, University Medical Center Groningen, University of Groningen, Hanzeplein 1, Groningen 9713 GZ, The Netherlands
| | - Jan A A M Kamps
- Laboratory for Endothelial Biomedicine & Vascular Drug Targeting Research, University Medical Center Groningen, University of Groningen, Hanzeplein 1, Groningen 9713 GZ, The Netherlands
| | | |
Collapse
|
32
|
Prakash GS, Gurung L, Schmid PC, Wang F, Thomas TE, Panja C, Mathew T, Olah GA. ipso-Nitrosation of arylboronic acids with chlorotrimethylsilane and sodium nitrite. Tetrahedron Lett 2014. [DOI: 10.1016/j.tetlet.2014.01.138] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
|
33
|
Walker SR, Czyz ML, Morris JC. Concise syntheses of meridianins and meriolins using a catalytic domino amino-palladation reaction. Org Lett 2014; 16:708-11. [PMID: 24437527 DOI: 10.1021/ol403390m] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A synthesis of natural and synthetic members of the meridianin family of kinase inhibitory natural products has been developed. The sequence utilizes a variation of the Cacchi palladium-catalyzed domino reaction to efficiently construct the heterocyclic framework of the meridianins and meriolins from monocyclic precursors.
Collapse
Affiliation(s)
- Scott R Walker
- School of Chemistry and Physics, University of Adelaide , Adelaide, SA, Australia
| | | | | |
Collapse
|
34
|
Ieronimo G, Mondelli A, Tibiletti F, Maspero A, Palmisano G, Galli S, Tollari S, Masciocchi N, Nicholas KM, Tagliapietra S, Cravotto G, Penoni A. A simple, efficient, regioselective and one-pot preparation of N-hydroxy- and N–O-protected hydroxyindoles via cycloaddition of nitrosoarenes with alkynes. Synthetic scope, applications and novel by-products. Tetrahedron 2013. [DOI: 10.1016/j.tet.2013.10.072] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
35
|
A structurally diverse heterocyclic library by decoration of oxcarbazepine scaffold. Molecules 2013; 18:13705-22. [PMID: 24201207 PMCID: PMC6270634 DOI: 10.3390/molecules181113705] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2013] [Revised: 11/01/2013] [Accepted: 11/04/2013] [Indexed: 11/29/2022] Open
Abstract
A library of new heterocyclic systems was synthesized starting from oxcarbazepine (OXC, Trileptal®, 10-oxo-10,11-dihydro-5H-dibenzo[b,f]azepine-5-carboxamide). The key for these transformations is the α-enolizable ketone present on the [d]-side of our starting material OXC, thus, an in depth investigation of the literature to find heteroannulation reactions for substrates carrying an α-enolizable ketone gave us a boost to discover an excellent derivatization strategy and [3+2], [4+2] and [4+1] approaches were successfully developed. Almost always a pre-functionalization was needed, but also the direct one-pot heterocycle construction was also explored.
Collapse
|
36
|
Bharate SB, Sawant SD, Singh PP, Vishwakarma RA. Kinase inhibitors of marine origin. Chem Rev 2013; 113:6761-815. [PMID: 23679846 DOI: 10.1021/cr300410v] [Citation(s) in RCA: 89] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Sandip B Bharate
- Medicinal Chemistry Division, Indian Institute of Integrative Medicine (Council of Scientific and Industrial Research), Canal Road, Jammu-180001, India
| | | | | | | |
Collapse
|
37
|
|
38
|
Broggini G, Beccalli EM, Fasana A, Gazzola S. Palladium-catalyzed dual C-H or N-H functionalization of unfunctionalized indole derivatives with alkenes and arenes. Beilstein J Org Chem 2012; 8:1730-46. [PMID: 23209507 PMCID: PMC3511007 DOI: 10.3762/bjoc.8.198] [Citation(s) in RCA: 80] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2012] [Accepted: 09/10/2012] [Indexed: 01/10/2023] Open
Abstract
This review highlights the development of palladium-catalyzed C-H and N-H functionalization reactions involving indole derivatives. These procedures require unactivated starting materials and are respectful of the basic principle of sustainable chemistry tied to atom economy.
Collapse
Affiliation(s)
- Gianluigi Broggini
- Dipartimento di Scienza e Alta Tecnologia, Università dell’Insubria, Via Valleggio 11, 22100 Como, Italy
| | - Egle M Beccalli
- DISFARM, Sezione di Chimica Generale e Organica “A. Marchesini” Università di Milano Via Venezian 21, 20133 Milano, Italy
| | - Andrea Fasana
- Dipartimento di Scienza e Alta Tecnologia, Università dell’Insubria, Via Valleggio 11, 22100 Como, Italy
| | - Silvia Gazzola
- Dipartimento di Scienza e Alta Tecnologia, Università dell’Insubria, Via Valleggio 11, 22100 Como, Italy
| |
Collapse
|
39
|
Uchuskin MG, Molodtsova NV, Abaev VT, Trushkov IV, Butin AV. Furan ring opening–indole ring closure: SnCl2-induced reductive transformation of difuryl(2-nitroaryl)methanes into 2-(2-acylvinyl)indoles. Tetrahedron 2012. [DOI: 10.1016/j.tet.2012.03.069] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
40
|
Molander GA, Cavalcanti LN. Nitrosation of aryl and heteroaryltrifluoroborates with nitrosonium tetrafluoroborate. J Org Chem 2012; 77:4402-13. [PMID: 22524190 PMCID: PMC3345084 DOI: 10.1021/jo300551m] [Citation(s) in RCA: 66] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Organotrifluoroborates have emerged as an alternative to toxic and air- and moisture-sensitive organometallic species for the synthesis of functionalized aryl and heteroaryl compounds. It has been shown that the trifluoroborate moiety can be easily converted into a variety of different substituents in a late synthetic stage. In this paper, we disclose a mild, selective, and convenient method for the ipso-nitrosation of organotrifluoroborates using nitrosonium tetrafluoroborate (NOBF(4)). Aryl- and heteroaryltrifluoroborates were converted into the corresponding nitroso products in good to excellent yields. This method proved to be tolerant of a broad range of functional groups.
Collapse
Affiliation(s)
- Gary A Molander
- Roy and Diana Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, 231 South 34th Street, Philadelphia, Pennsylvania 19104-6323, USA.
| | | |
Collapse
|
41
|
Bellotto S, Reuter R, Heinis C, Wegner HA. Synthesis and photochemical properties of oligo-ortho-azobenzenes. J Org Chem 2011; 76:9826-34. [PMID: 22004310 DOI: 10.1021/jo201996w] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Azobenzenes have attracted great interest in recent years because of their ability to change conformation upon irradiation. This property has been featured in several applications not only in organic chemistry but also in biology. Even though monoazobenzenes have been extensively studied and documented in the literature, only a few methods are available for the synthesis of oligo-ortho-azobenzenes. Also, their photochemical properties have not been reported so far. This study shows an efficient strategy for the preparation of oligo-ortho-azobenzenes and the investigation of their photochemical properties. It is demonstrated that the absorption spectra are highly influenced by the substituents. Interestingly, none of the ortho-bis-, tris-, or tetra-azobenzenes showed any E → Z isomerization. Only the ortho-nitrogen-substituted monoazobenzenes' photochromic behavior upon UV irradiation was observed.
Collapse
Affiliation(s)
- Silvia Bellotto
- Department of Chemistry, University of Basel, St. Johanns-Ring 19, CH-4056 Basel, Switzerland
| | | | | | | |
Collapse
|
42
|
Rostami M, Khosropour AR, Mirkhani V, Mohammadpoor-Baltork I, Moghadam M, Tangestaninejad S. [C6(MIm)2]2W10O32. 2H2O: A novel and powerful catalyst for the synthesis of 4-arylidene-2-phenyl-5(4)-oxazolones under ultrasonic condition. CR CHIM 2011. [DOI: 10.1016/j.crci.2011.02.003] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
|
43
|
Lebar MD, Hahn KN, Mutka T, Maignan P, McClintock JB, Amsler CD, van Olphen A, Kyle DE, Baker BJ. CNS and antimalarial activity of synthetic meridianin and psammopemmin analogs. Bioorg Med Chem 2011; 19:5756-62. [PMID: 21907583 DOI: 10.1016/j.bmc.2011.08.033] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2011] [Revised: 08/12/2011] [Accepted: 08/15/2011] [Indexed: 10/17/2022]
Abstract
The marine invertebrate-derived meridianin A, the originally proposed structure for psammopemmin A, and several related 3-pyrimidylindole analogs were synthesized and subsequently investigated for central nervous system, antimalarial, and cytotoxic activity. A Suzuki coupling of an indoleborate ester to the pyrimidine electrophile was utilized to form the natural product and derivatives thereof. The 3-pyrimidineindoles were found to prevent radioligand binding to several CNS receptors and transporters, most notably, serotonin receptors (<0.2 μM K(i) for 5HT(2B)). Two compounds also inhibited the human malaria parasite Plasmodium falciparum (IC(50) <50 μM). Only the natural product was cytotoxic toward A549 cells (IC(50)=15 μM).
Collapse
Affiliation(s)
- Matthew D Lebar
- Department of Chemistry and Center for Molecular Diversity in Drug Design, Discovery and Delivery, South Florida, Tampa, FL 33620, USA
| | | | | | | | | | | | | | | | | |
Collapse
|
44
|
|
45
|
Murru S, Gallo AA, Srivastava RS. Gold-Catalyzed Synthesis of 3-Arylindoles via Annulation of Nitrosoarenes and Alkynes. ACS Catal 2010. [DOI: 10.1021/cs100024n] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Siva Murru
- Department of Chemistry, University of Louisiana at Lafayette, Lafayette, Louisiana 70504, United States
| | - August A. Gallo
- Department of Chemistry, University of Louisiana at Lafayette, Lafayette, Louisiana 70504, United States
| | - Radhey S. Srivastava
- Department of Chemistry, University of Louisiana at Lafayette, Lafayette, Louisiana 70504, United States
| |
Collapse
|
46
|
Stephenson GR, Balfe AM, Hughes DL, Kelsey RD. Decomplexation–nitroso Diels–Alder (NDA) approach to C,D-ring functionalisation for hippeastrine. Tetrahedron Lett 2010. [DOI: 10.1016/j.tetlet.2010.09.118] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|