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Taniguchi M, LaRocca CA, Bernat JD, Lindsey JS. Digital Database of Absorption Spectra of Diverse Flavonoids Enables Structural Comparisons and Quantitative Evaluations. JOURNAL OF NATURAL PRODUCTS 2023; 86:1087-1119. [PMID: 36848595 DOI: 10.1021/acs.jnatprod.2c00720] [Citation(s) in RCA: 13] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Flavonoids play diverse roles in plants, comprise a non-negligible fraction of net primary photosynthetic production, and impart beneficial effects in human health from a plant-based diet. Absorption spectroscopy is an essential tool for quantitation of flavonoids isolated from complex plant extracts. The absorption spectra of flavonoids typically consist of two major bands, band I (300-380 nm) and band II (240-295 nm), where the former engenders a yellow color; in some flavonoids the absorption tails to 400-450 nm. The absorption spectra of 177 flavonoids and analogues of natural or synthetic origin have been assembled, including molar absorption coefficients (109 from the literature, 68 measured here). The spectral data are in digital form and can be viewed and accessed at http://www.photochemcad.com. The database enables comparison of the absorption spectral features of 12 distinct types of flavonoids including flavan-3-ols (e.g., catechin, epigallocatechin), flavanones (e.g., hesperidin, naringin), 3-hydroxyflavanones (e.g., taxifolin, silybin), isoflavones (e.g., daidzein, genistein), flavones (e.g., diosmin, luteolin), and flavonols (e.g., fisetin, myricetin). The structural features that give rise to shifts in wavelength and intensity are delineated. The availability of digital absorption spectra for diverse flavonoids facilitates analysis and quantitation of these valuable plant secondary metabolites. Four examples are provided of calculations─multicomponent analysis, solar ultraviolet photoprotection, sun protection factor (SPF), and Förster resonance energy transfer (FRET)─for which the spectra and accompanying molar absorption coefficients are sine qua non.
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Affiliation(s)
- Masahiko Taniguchi
- Department of Chemistry, North Carolina State University, Raleigh, North Carolina 27695-8204, United States
| | - Connor A LaRocca
- Department of Chemistry, North Carolina State University, Raleigh, North Carolina 27695-8204, United States
| | - Jake D Bernat
- Department of Chemistry, North Carolina State University, Raleigh, North Carolina 27695-8204, United States
| | - Jonathan S Lindsey
- Department of Chemistry, North Carolina State University, Raleigh, North Carolina 27695-8204, United States
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Li B, Sun Z, Zhai Y, Jiang J, Huang Y, Meng J. Rapid decoloration and acidichromism of photochromic 3,3-diaryl-3H-pyrano[3,2-f]quinolines. Tetrahedron 2019. [DOI: 10.1016/j.tet.2019.130471] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
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Abstract
Successful methods have been found for the preparation of a wide range of phenoxy-2H-benzo-[b]pyrans.
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Affiliation(s)
- John W. Firth
- Department of Chemical and Biological Sciences, The University of Huddersfield, Queensgate, Huddersfield, UK, HD1 3DH
| | - Robert Livingstone
- Department of Chemical and Biological Sciences, The University of Huddersfield, Queensgate, Huddersfield, UK, HD1 3DH
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Matos MJ, Rodríguez-Enríquez F, Borges F, Santana L, Uriarte E, Estrada M, Rodríguez-Franco MI, Laguna R, Viña D. 3-Amidocoumarins as Potential Multifunctional Agents against Neurodegenerative Diseases. ChemMedChem 2015; 10:2071-9. [PMID: 26493007 DOI: 10.1002/cmdc.201500408] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2015] [Revised: 10/13/2015] [Indexed: 01/23/2023]
Abstract
Monoamine oxidase (MAO) generates reactive oxygen species (ROS), which cause neuronal cell death, causing neurodegeneration. Agents that are able to concurrently inhibit MAO and scavenge free radicals represent promising multifunctional neuroprotective agents that could be used to delay or slow the progression of neurodegenerative diseases. In this work, variously substituted 3-amidocoumarins are described that exert neuroprotection in vitro against hydrogen peroxide in rat cortical neurons, as well as antioxidant activity in a 1,1-diphenyl-2-picrylhydrazyl (DPPH⋅) radical scavenging assay. Selective and reversible inhibitors of the MAO-B isoform were identified. Interestingly, in the case of the 3-benzamidocoumarins, substitution at position 4 with a hydroxy group abolishes MAO-B activity, but the compounds remain active in the neuroprotection model. Further evaluation of 3-heteroarylamide derivatives indicates that it is the nature of the heterocycle that determines the neuroprotective effects. Evaluation in a parallel artificial membrane permeability assay (PAMPA) highlighted the need to further improve the blood-brain barrier permeability of this compound class. However, the compounds described herein adhere to Lipinski's rule of five, suggesting that this novel scaffold has desirable properties for the development of potential drug candidates.
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Affiliation(s)
- Maria João Matos
- CIQUP/Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade do Porto, 4169-007, Porto, Portugal.
| | - Fernanda Rodríguez-Enríquez
- Departamento de Farmacología, CIMUS, Universidad de Santiago de Compostela, 15782, Santiago de Compostela, Spain
| | - Fernanda Borges
- CIQUP/Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade do Porto, 4169-007, Porto, Portugal.
| | - Lourdes Santana
- Departamento de Química Orgánica, Facultad de Farmacia, Universidad de Santiago de Compostela, 15782, Santiago de Compostela, Spain
| | - Eugenio Uriarte
- Departamento de Química Orgánica, Facultad de Farmacia, Universidad de Santiago de Compostela, 15782, Santiago de Compostela, Spain
| | - Martín Estrada
- Instituto de Química Médica, Consejo Superior de Investigaciones Científicas (IQM-CSIC), C/Juan de la Cierva 3, 28006, Madrid, Spain
| | - María Isabel Rodríguez-Franco
- Instituto de Química Médica, Consejo Superior de Investigaciones Científicas (IQM-CSIC), C/Juan de la Cierva 3, 28006, Madrid, Spain
| | - Reyes Laguna
- Departamento de Farmacología, CIMUS, Universidad de Santiago de Compostela, 15782, Santiago de Compostela, Spain
| | - Dolores Viña
- Departamento de Farmacología, CIMUS, Universidad de Santiago de Compostela, 15782, Santiago de Compostela, Spain.
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Matos MJ, Vilar S, Kachler S, Celeiro M, Vazquez-Rodriguez S, Santana L, Uriarte E, Hripcsak G, Borges F, Klotz KN. Development of novel adenosine receptor ligands based on the 3-amidocoumarin scaffold. Bioorg Chem 2015; 61:1-6. [PMID: 26042529 DOI: 10.1016/j.bioorg.2015.05.008] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2015] [Revised: 05/15/2015] [Accepted: 05/19/2015] [Indexed: 10/23/2022]
Abstract
With the aim of finding new adenosine receptor (AR) ligands presenting the 3-amidocoumarin scaffold, a study focusing on the discovery of new chemical entities was carried out. The synthesized compounds 1-8 were evaluated in radioligand binding (A1, A2A and A3) and adenylyl cyclase activity (A2B) assays in order to determine their affinity for human AR subtypes. The 3-benzamide derivative 4 showed the highest affinity of the whole series and was more than 30-fold selective for the A3 AR (Ki=3.24 μM). The current study supported that small structural changes in this scaffold allowed modulating the affinity resulting in novel promising classes of A1, A2A, and/or A3 AR ligands. We also performed docking calculations in hA2A and hA3 to identify the hypothetical binding mode for the most active compounds. In addition, some ADME properties were calculated in order to better understand the potential of these compounds as drug candidates.
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Affiliation(s)
- Maria J Matos
- CIQUP, Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade do Porto, 4169-007 Porto, Portugal.
| | - Santiago Vilar
- Departamento de Química Orgánica, Facultad de Farmacia, Universidad de Santiago de Compostela, 15782 Santiago de Compostela, Spain; Department of Biomedical Informatics, Columbia University Medical Center, New York, NY 10032, USA
| | - Sonja Kachler
- Institut für Pharmakologie und Toxikologie, Universität Würzburg, 97078 Würzburg, Germany
| | - Maria Celeiro
- Departamento de Química Orgánica, Facultad de Farmacia, Universidad de Santiago de Compostela, 15782 Santiago de Compostela, Spain
| | - Saleta Vazquez-Rodriguez
- CIQUP, Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade do Porto, 4169-007 Porto, Portugal
| | - Lourdes Santana
- Departamento de Química Orgánica, Facultad de Farmacia, Universidad de Santiago de Compostela, 15782 Santiago de Compostela, Spain
| | - Eugenio Uriarte
- Departamento de Química Orgánica, Facultad de Farmacia, Universidad de Santiago de Compostela, 15782 Santiago de Compostela, Spain
| | - George Hripcsak
- Department of Biomedical Informatics, Columbia University Medical Center, New York, NY 10032, USA
| | - Fernanda Borges
- CIQUP, Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade do Porto, 4169-007 Porto, Portugal.
| | - Karl-Norbert Klotz
- Institut für Pharmakologie und Toxikologie, Universität Würzburg, 97078 Würzburg, Germany
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Matos MJ, Gaspar A, Kachler S, Klotz KN, Borges F, Santana L, Uriarte E. Targeting adenosine receptors with coumarins: synthesis and binding activities of amide and carbamate derivatives. J Pharm Pharmacol 2013; 65:30-4. [PMID: 23215685 DOI: 10.1111/j.2042-7158.2012.01571.x] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
OBJECTIVES With the aim of finding the structural features governing binding activity and selectivity against adenosine receptors (ARs), several 3-subtituted coumarins with amide (compounds 3-6) and carbamate (7-9) functions were synthesized. To study its possible influence on the binding activity and selectivity, a hydroxyl substituent was also introduced at position 4 of the coumarin moiety. METHODS A new series of coumarins (3-9) were synthesized and evaluated by radioligand binding studies towards ARs. KEY FINDINGS None of the 4-hydroxy derivatives (4, 8 and 9) showed binding affinity for any of the ARs. None of the compounds interacted with the hA(2B) AR (K(i) > 100,000 nM). Compounds 3, 5, 6 and 7 had different activity profiles with dissimilar binding affinity and selectivity towards human A₁, A(2A) and A₃ ARs. CONCLUSIONS The most remarkable derivative is compound 7, which presents the best affinity and selectivity for the A₃ adenosine receptor (K(i) = 5500 nM).
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Affiliation(s)
- Maria João Matos
- CIQUP/Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade do Porto, Porto, Portugal.
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Zhang T, Huang X, Luling Wu A. A Facile Synthesis of 2H-Chromenes and 9-Functionalized Phenanthrenes through Reactions between α,β-Unsaturated Compounds and Arynes. European J Org Chem 2012. [DOI: 10.1002/ejoc.201200042] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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Viña D, Matos MJ, Yáñez M, Santana L, Uriarte E. 3-Substituted coumarins as dual inhibitors of AChE and MAO for the treatment of Alzheimer's disease. MEDCHEMCOMM 2012. [DOI: 10.1039/c1md00221j] [Citation(s) in RCA: 76] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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Ortica F, Bougdid L, Moustrou C, Mazzucato U, Favaro G. Structure effects on the photobehaviour of 2,2-diphenyl(2H)chromenes. J Photochem Photobiol A Chem 2008. [DOI: 10.1016/j.jphotochem.2008.08.013] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Tan TF, Han J, Pang ML, Fu YF, Ma H, Ma YX, Meng JB. Nanoarchitecture self-assembly and photochromic studies of 2,2-diarylnaphthopyrans. Tetrahedron 2006. [DOI: 10.1016/j.tet.2006.03.003] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Yuji K, Yasuzo S, Masako S. Formation and Photo-initiated Addition-reaction of Chromenyl Polymer Films for Molecular Mounting. J PHOTOPOLYM SCI TEC 2005. [DOI: 10.2494/photopolymer.18.69] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Kodama Y, Nakabayashi T, Segawa K, Hattori E, Sakuragi M, Nishi N, Sakuragi H. Time-Resolved Absorption Studies on the Photochromic Process of 2H-Benzopyrans in the Picosecond to Submillisecond Time Domain. J Phys Chem A 2000. [DOI: 10.1021/jp002032e] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yoichi Kodama
- Department of Chemistry, University of Tsukuba, Tennodai, Tsukuba, 305-8571, Japan, Institute for Molecular Science, Myodaiji, Okazaki 444-8585, Japan, and National Institute of Materials and Chemical Research, Higashi, Tsukuba 305-8565, Japan
| | - Takakazu Nakabayashi
- Department of Chemistry, University of Tsukuba, Tennodai, Tsukuba, 305-8571, Japan, Institute for Molecular Science, Myodaiji, Okazaki 444-8585, Japan, and National Institute of Materials and Chemical Research, Higashi, Tsukuba 305-8565, Japan
| | - Katsunori Segawa
- Department of Chemistry, University of Tsukuba, Tennodai, Tsukuba, 305-8571, Japan, Institute for Molecular Science, Myodaiji, Okazaki 444-8585, Japan, and National Institute of Materials and Chemical Research, Higashi, Tsukuba 305-8565, Japan
| | - Emi Hattori
- Department of Chemistry, University of Tsukuba, Tennodai, Tsukuba, 305-8571, Japan, Institute for Molecular Science, Myodaiji, Okazaki 444-8585, Japan, and National Institute of Materials and Chemical Research, Higashi, Tsukuba 305-8565, Japan
| | - Masako Sakuragi
- Department of Chemistry, University of Tsukuba, Tennodai, Tsukuba, 305-8571, Japan, Institute for Molecular Science, Myodaiji, Okazaki 444-8585, Japan, and National Institute of Materials and Chemical Research, Higashi, Tsukuba 305-8565, Japan
| | - Nobuyuki Nishi
- Department of Chemistry, University of Tsukuba, Tennodai, Tsukuba, 305-8571, Japan, Institute for Molecular Science, Myodaiji, Okazaki 444-8585, Japan, and National Institute of Materials and Chemical Research, Higashi, Tsukuba 305-8565, Japan
| | - Hirochika Sakuragi
- Department of Chemistry, University of Tsukuba, Tennodai, Tsukuba, 305-8571, Japan, Institute for Molecular Science, Myodaiji, Okazaki 444-8585, Japan, and National Institute of Materials and Chemical Research, Higashi, Tsukuba 305-8565, Japan
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Neville CF, Barr SA, Grundon MF. Approaches to the syntheses of dimeric quinolinone alkaloids. Tetrahedron Lett 1992. [DOI: 10.1016/s0040-4039(00)61109-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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14
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Ngadjui BT, Ayafor JF, Bilon A, Sondengam B, Connolly JD, Rycroft DS. Synthesis of Veprisine Dimers and the Formation of a Novel Cyclic Tetramer from Precocene I. Tetrahedron 1992. [DOI: 10.1016/s0040-4020(01)89446-1] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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15
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Isolation and synthesis of bishordeninyl terpene alkaloids. Some experiments relating to the natural occurrence of formal Diels-Alder adducts. Tetrahedron 1985. [DOI: 10.1016/s0040-4020(01)97202-3] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Advances in the Chemistry of Charom-3-enes. ADVANCES IN HETEROCYCLIC CHEMISTRY 1975. [DOI: 10.1016/s0065-2725(08)60130-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/09/2023]
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Trudell JR, Woodgate SDS, Djerassi C. Mass spectrometry in structural and stereochemical problems—CLXXXVII A study of skeletal rearrangements in chromans by combined13C and deuterium labeling. ACTA ACUST UNITED AC 1970. [DOI: 10.1002/oms.1210030607] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Brown P, Djerassi C. Elektronenstoß-induzierte Umlagerungen organischer Moleküle. Angew Chem Int Ed Engl 1967. [DOI: 10.1002/ange.19670791102] [Citation(s) in RCA: 39] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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