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Odin IS, Chertov AY, Grigor'eva OB, Golovanov AA. Ketone Derivatives of Propargylamines as Synthetic Equivalents of Conjugated 2,4,1-Enynones in the Synthesis of Acetylenic 2-Pyrazolines and Pyrazoles. J Org Chem 2022; 87:5916-5924. [PMID: 35394780 DOI: 10.1021/acs.joc.2c00198] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
An interaction of 1,5-diaryl-3-X-pent-4-yn-1-ones (where X stands for piperidin-1-yl, morpholin-4-yl, 4-methylpiperazin-1-yl) with arylhydrazines proceeds at room temperature and results in 3-aryl-5-arylethynyl-1-phenyl-4,5-dihydro-1H-pyrazoles with up to 57-73% yields. Under similar conditions, the cyclocondensation of conjugated 2,4,1-enynones with arylhydrazine proceeds only in the presence of cyclic amines. 1,5-Diaryl-3-X-pent-4-yn-1-ones are reported as synthetic equivalents of conjugated 2,4,1-enynones in reactions with arylhydrazines. On the basis of obtained data, there are highly efficient methods developed for the synthesis of 5-arylethynyl-substituted 4,5-dihydro-1H-pyrazoles, as well as for similarly structured 1H-pyrazoles prepared by oxidation in AcOH. Presented products possess quite marked fluorescent abilities. Emission maximum wavelengths are located at 453-465 and 363-400 nm, respectively; certain compounds show extremely large Stokes shifts that may reach 91,000 cm-1.
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Affiliation(s)
- Ivan S Odin
- Togliatti State University, 14 Belorusskaya Str., 445020 Togliatti, Russia
| | - Anton Yu Chertov
- Togliatti State University, 14 Belorusskaya Str., 445020 Togliatti, Russia
| | - Olga B Grigor'eva
- Togliatti State University, 14 Belorusskaya Str., 445020 Togliatti, Russia
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Mlakić M, Čadež T, Barić D, Puček I, Ratković A, Marinić Ž, Lasić K, Kovarik Z, Škorić I. New Uncharged 2-Thienostilbene Oximes as Reactivators of Organophosphate-Inhibited Cholinesterases. Pharmaceuticals (Basel) 2021; 14:ph14111147. [PMID: 34832929 PMCID: PMC8621217 DOI: 10.3390/ph14111147] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2021] [Revised: 11/04/2021] [Accepted: 11/08/2021] [Indexed: 11/16/2022] Open
Abstract
The inhibition of acetylcholinesterase (AChE) and butyrylcholinesterase (BChE) by organophosphates (OPs) as nerve agents and pesticides compromises normal cholinergic nerve signal transduction in the peripheral and central nervous systems (CNS) leading to cholinergic crisis. The treatment comprises an antimuscarinic drug and an oxime reactivator of the inhibited enzyme. Oximes in use have quaternary nitrogens, and therefore poorly cross the brain–blood barrier. In this work, we synthesized novel uncharged thienostilbene oximes by the Wittig reaction, converted to aldehydes by Vilsmeier formylation, and transformed to the corresponding uncharged oximes in very high yields. Eight trans,anti- and trans,syn-isomers of oximes were tested as reactivators of nerve-agent-inhibited AChE and BChE. Four derivatives reactivated cyclosarin-inhibited BChE up to 70% in two hours of reactivation, and docking studies confirmed their productive interactions with the active site of cyclosarin-inhibited BChE. Based on the moderate binding affinity of both AChE and BChE for all selected oximes, and in silico evaluated ADME properties regarding lipophilicity and CNS activity, these compounds present a new class of oximes with the potential for further development of CNS-active therapeutics in OP poisoning.
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Affiliation(s)
- Milena Mlakić
- Department of Organic Chemistry, Faculty of Chemical Engineering and Technology, University of Zagreb, Marulićev trg 19, HR-10 000 Zagreb, Croatia; (M.M.); (I.P.)
| | - Tena Čadež
- Institute for Medical Research and Occupational Health, Ksaverska cesta 2, HR-10 000 Zagreb, Croatia;
| | - Danijela Barić
- Group for Computational Life Sciences, Division of Physical Chemistry, Ruđer Bošković Institute, Bijenička cesta 54, HR-10 000 Zagreb, Croatia;
| | - Ivana Puček
- Department of Organic Chemistry, Faculty of Chemical Engineering and Technology, University of Zagreb, Marulićev trg 19, HR-10 000 Zagreb, Croatia; (M.M.); (I.P.)
| | - Ana Ratković
- Fidelta Ltd., Prilaz Baruna Filipovića 29, HR-10 000 Zagreb, Croatia;
| | - Željko Marinić
- NMR Center, Ruđer Bošković Institute, Bijenička cesta 54, HR-10 000 Zagreb, Croatia;
| | - Kornelija Lasić
- Pliva Tapi R&D, TEVA, Prilaz baruna Filipovića 25, HR-10 000 Zagreb, Croatia;
| | - Zrinka Kovarik
- Institute for Medical Research and Occupational Health, Ksaverska cesta 2, HR-10 000 Zagreb, Croatia;
- Correspondence: (Z.K.); (I.Š.)
| | - Irena Škorić
- Department of Organic Chemistry, Faculty of Chemical Engineering and Technology, University of Zagreb, Marulićev trg 19, HR-10 000 Zagreb, Croatia; (M.M.); (I.P.)
- Correspondence: (Z.K.); (I.Š.)
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Mutoh Y, Yamamoto K, Mohara Y, Saito S. (Z)-Selective Hydrosilylation and Hydroboration of Terminal Alkynes Enabled by Ruthenium Complexes with an N-Heterocyclic Carbene Ligand. CHEM REC 2021; 21:3429-3441. [PMID: 34028185 DOI: 10.1002/tcr.202100083] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2021] [Revised: 04/30/2021] [Accepted: 05/03/2021] [Indexed: 11/08/2022]
Abstract
Metal-catalyzed trans-1,2-hydrosilylations and hydroborations of terminal alkynes that generate synthetically valuable (Z)-alkenylsilanes and (Z)-alkenylboranes remain challenging due to the (E)-selective nature of the reactions and the formation of the thermodynamically unfavorable (Z)-isomer. The development of new, efficient catalytic systems for the (Z)-selective hydrosilylation and hydroboration of terminal alkynes is thus highly desirable from a fundamental perspective as it would deepen our understanding of the metal-catalyzed (Z)-selective hydrosilylation and hydroboration of terminal alkynes. This personal account describes our research for developing a ruthenium complex that can efficiently catalyze the hydrosilylation and hydroboration of terminal alkynes, and for exploring the factors controlling (Z)-selectivity of the reactions. Our effort into the activation of B-protected boronic acids, R-B(dan) (dan=naphthalene-1,8-diaminato), that was believed not to participate in Suzuki-Miyaura cross-coupling, is also discussed.
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Affiliation(s)
- Yuichiro Mutoh
- Department of Chemistry, Faculty of Science, Tokyo University of Science 1-3 Kagurazaka, Shinjuku-ku, Tokyo, 162-8601, Japan.,RIKEN Center for Sustainable Resource Science 2-1 Hirosawa, Wako, Saitama, 351-0198, Japan
| | - Kensuke Yamamoto
- Department of Chemistry, Faculty of Science, Tokyo University of Science 1-3 Kagurazaka, Shinjuku-ku, Tokyo, 162-8601, Japan
| | - Yusei Mohara
- Department of Chemistry, Faculty of Science, Tokyo University of Science 1-3 Kagurazaka, Shinjuku-ku, Tokyo, 162-8601, Japan
| | - Shinichi Saito
- Department of Chemistry, Faculty of Science, Tokyo University of Science 1-3 Kagurazaka, Shinjuku-ku, Tokyo, 162-8601, Japan
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Minhas R, Bansal Y, Bansal G. Inducible nitric oxide synthase inhibitors: A comprehensive update. Med Res Rev 2019; 40:823-855. [PMID: 31502681 DOI: 10.1002/med.21636] [Citation(s) in RCA: 60] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2019] [Revised: 08/22/2019] [Accepted: 08/23/2019] [Indexed: 12/27/2022]
Abstract
Inducible nitric oxide synthase (iNOS), which is expressed in response to bacterial/proinflammatory stimuli, generates nitric oxide (NO) that provides cytoprotection. Overexpression of iNOS increases the levels of NO, and this increased NO level is implicated in pathophysiology of complex multifactorial diseases like Parkinson's disease, Alzheimer's disease, multiple sclerosis, rheumatoid arthritis, and inflammatory bowel disease. Selective inhibition of iNOS is an effective approach in treatment of such complex diseases. l-Arginine, being a substrate for iNOS, is the natural lead to develop iNOS inhibitors. More than 200 research reports on development of nitric oxide synthase inhibitors by different research groups across the globe have appeared in literature so far. The first review on iNOS, in 2002, discussed the iNOS inhibitors under two classes that is, amino acid and non-amino acid derivatives. Other review articles discussing specific chemical classes of iNOS inhibitors also appeared during last decade. In the present review, all reports on both natural and synthetic iNOS inhibitors, published 2002 onwards, are studied, classified, and discussed to provide comprehensive information on iNOS inhibitors. The synthetic inhibitors are broadly classified into two categories that is, arginine and non-arginine analogs. The latter are further classified into amidines, five- or six-membered heterocyclics, fused cyclics, steroidal type, and chalcones analogs. Structures of the most/significantly potent compounds from each report are provided to know the functional groups important for incurring iNOS inhibitory activity and selectivity. This review is aimed to provide a comprehensive view to the medicinal chemists for rational designing of novel and potent iNOS inhibitors.
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Affiliation(s)
- Richa Minhas
- Department of Pharmaceutical Sciences and Drug Research, Punjabi University, Patiala, Punjab, India
| | - Yogita Bansal
- Department of Pharmaceutical Sciences and Drug Research, Punjabi University, Patiala, Punjab, India
| | - Gulshan Bansal
- Department of Pharmaceutical Sciences and Drug Research, Punjabi University, Patiala, Punjab, India
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Mutoh Y, Mohara Y, Saito S. (Z)-Selective Hydrosilylation of Terminal Alkynes with HSiMe(OSiMe3)2 Catalyzed by a Ruthenium Complex Containing an N-Heterocyclic Carbene. Org Lett 2017; 19:5204-5207. [DOI: 10.1021/acs.orglett.7b02477] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Yuichiro Mutoh
- Department of Chemistry, Faculty of Science, Tokyo University of Science, 1-3 Kagurazaka,
Shinjuku-ku, Tokyo 162-8601, Japan
| | - Yusei Mohara
- Department of Chemistry, Faculty of Science, Tokyo University of Science, 1-3 Kagurazaka,
Shinjuku-ku, Tokyo 162-8601, Japan
| | - Shinichi Saito
- Department of Chemistry, Faculty of Science, Tokyo University of Science, 1-3 Kagurazaka,
Shinjuku-ku, Tokyo 162-8601, Japan
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Caruso F, Mendoza L, Castro P, Cotoras M, Aguirre M, Matsuhiro B, Isaacs M, Rossi M, Viglianti A, Antonioletti R. Antifungal activity of resveratrol against Botrytis cinerea is improved using 2-furyl derivatives. PLoS One 2011; 6:e25421. [PMID: 22022392 PMCID: PMC3191159 DOI: 10.1371/journal.pone.0025421] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2011] [Accepted: 09/05/2011] [Indexed: 11/18/2022] Open
Abstract
The antifungal effect of three furyl compounds closely related to resveratrol, (E)-3,4,5-trimethoxy-β-(2-furyl)-styrene (1), (E)-4-methoxy-β-(2-furyl)-styrene (2) and (E)-3,5-dimethoxy-β-(2-furyl)-styrene (3) against Botrytis cinerea was analyzed. The inhibitory effect, at 100 µg ml(-1) of compounds 1, 2, 3 and resveratrol on conidia germination, was determined to be about 70%, while at the same concentration pterostilbene (a dimethoxyl derivative of resveratrol) produced complete inhibition. The title compounds were more fungitoxic towards in vitro mycelial growth than resveratrol and pterostilbene. Compound 3 was the most active and a potential explanation of this feature is given using density functional theory (DFT) calculations on the demethoxylation/demethylation process. Compound 3 was further evaluated for its effects on laccase production, oxygen consumption and membrane integrity of B. cinerea. An increase of the laccase activity was observed in the presence of compound 3 and, using Sytox Green nucleic acid stain, it was demonstrated that this compound altered B. cinerea membrane. Finally, compound 3 partially affected conidia respiration.
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Affiliation(s)
- Francesco Caruso
- Istituto di Chimica Biomolecolare, Consiglio Nazionale delle Ricerche, University of Rome, Istituto Chimico, Rome, Italy
- * E-mail: (FC); (MR)
| | - Leonora Mendoza
- Facultad de Química y Biología, Universidad de Santiago de Chile, Santiago, Chile
| | - Paulo Castro
- Facultad de Química y Biología, Universidad de Santiago de Chile, Santiago, Chile
| | - Milena Cotoras
- Facultad de Química y Biología, Universidad de Santiago de Chile, Santiago, Chile
| | - Maria Aguirre
- Facultad de Química y Biología, Universidad de Santiago de Chile, Santiago, Chile
| | - Betty Matsuhiro
- Facultad de Química y Biología, Universidad de Santiago de Chile, Santiago, Chile
| | - Mauricio Isaacs
- Facultad de Ciencias, Departamento de Química, Universidad de Chile, Santiago, Chile
| | - Miriam Rossi
- Vassar College, Department of Chemistry, Poughkeepsie, New York, United States of America
- * E-mail: (FC); (MR)
| | | | - Roberto Antonioletti
- Istituto di Chimica Biomolecolare, Consiglio Nazionale delle Ricerche, University of Rome, Istituto Chimico, Rome, Italy
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Park EJ, Min HY, Chung HJ, Ahn YH, Pyee JH, Lee SK. Pinosylvin Suppresses LPS-stimulated Inducible Nitric Oxide Synthase Expression via the MyD88-independent, but TRIF-dependent Downregulation of IRF-3 Signaling Pathway in Mouse Macrophage Cells. Cell Physiol Biochem 2011; 27:353-62. [DOI: 10.1159/000327961] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/07/2011] [Indexed: 11/19/2022] Open
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8
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Tseng HY, Wu SH, Huang WH, Wang SF, Yang YN, Mahindroo N, Hsu T, Jiaang WT, Lee SJ. Benzothiazolium compounds: novel classes of inhibitors that suppress the nitric oxide production in RAW264.7 cells stimulated by LPS/IFNgamma. Bioorg Med Chem Lett 2005; 15:2027-32. [PMID: 15808462 DOI: 10.1016/j.bmcl.2005.02.063] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2005] [Revised: 01/31/2005] [Accepted: 02/18/2005] [Indexed: 11/22/2022]
Abstract
A series of benzothiazolium compounds were identified as novel classes of inhibitors of nitric oxide production in a cell culture system. They exhibited approximately 1600 folds potency with IC(50) at approximately 50nM to several microM as compared to IC(50) 88.4microM of l-NMMA, a known inhibitor of nitric oxide synthase. The mechanistic studies suggest that decreased iNOS protein synthesis and mRNA transcription, at least in part, were related to the inhibitory activity of effective benzothiazolium compounds. The correlation of in vivo and in vitro activities using mouse paw edema model was also demonstrated.
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Affiliation(s)
- Huan-Yi Tseng
- Division of Biotechnology and Pharmaceutical Researches, National Health Research Institutes, 35, Keyan Road, Zhunan Town, Miaoli County, Taiwan, ROC
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