101
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Synthesis, pharmacological study and docking calculations of new benzo[f]coumarin derivatives as dual inhibitors of enzymatic systems involved in neurodegenerative diseases. Future Med Chem 2014; 6:371-83. [DOI: 10.4155/fmc.14.9] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Background: Due to the complex etiology of neurodegenerative diseases, there is growing interest in multitarget drugs. In this study we synthesized and evaluated a new series of compounds, with benzo[f]coumarin structure, as potential inhibitors of MAO-A, MAO-B, AChE and BuChE. Results: In vitro studies show that most of the studied compounds inhibited the activity of MAO-B in the nano- to micro-molar range. 3-(3´-methoxyphenyl)benzo[f]coumarin is the most active compound with an IC50 value against MAO-B of 2.44 nM. Most of the derivatives exhibited an important selectivity profile against the MAO-B isoform. Some of them also acted as in vitro inhibitors of BuChE, with 3-(2´-hydroxyphenyl)benzo[f]coumarin being the most active with an IC50 value of 1.13 µM. In addition, a theoretical study of the physicochemical properties of the new compounds, as well as a docking study in both MAO isoforms, were carried out. Important structure–activity relationships were obtained. Conclusion: Important preliminary structure–activity relationships were concluded from the experimental results. These results encourage us to further explore the potential of this chemical family as potential drug candidates for the treatment of Alzheimer‘s disease.
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102
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Mertens MD, Hinz S, Müller CE, Gütschow M. Alkynyl–coumarinyl ethers as MAO-B inhibitors. Bioorg Med Chem 2014; 22:1916-28. [DOI: 10.1016/j.bmc.2014.01.046] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2013] [Revised: 01/20/2014] [Accepted: 01/23/2014] [Indexed: 12/20/2022]
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103
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A novel series of 6-substituted 3-(pyrrolidin-1-ylmethyl)chromen-2-ones as selective monoamine oxidase (MAO) A inhibitors. Eur J Med Chem 2014; 73:177-86. [DOI: 10.1016/j.ejmech.2013.11.035] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2013] [Revised: 11/26/2013] [Accepted: 11/27/2013] [Indexed: 11/22/2022]
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104
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Singh R, Afzal M, Zaki M, Ahmad M, Tabassum S, Bharadwaj PK. Synthesis, structure elucidation and DFT studies of a new coumarin-derived Zn( ii) complex: in vitro DNA/HSA binding profile and pBR322 cleavage pathway. RSC Adv 2014; 4:43504-43515. [DOI: 10.1039/c4ra05637j] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/12/2023] Open
Abstract
A new mononuclear coumarin-derived Zn(ii) complex was designed and synthesized, and its interactions with DNA and protein were analyzed.
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Affiliation(s)
- Ruchi Singh
- Department of Chemistry
- Indian Institute of Technology Kanpur
- , India
| | - Mohd. Afzal
- Department of Chemistry
- Aligarh Muslim University
- , India
| | - Mehvash Zaki
- Department of Chemistry
- Aligarh Muslim University
- , India
| | - Musheer Ahmad
- Department of Chemistry
- Indian Institute of Technology Kanpur
- , India
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105
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Fine molecular tuning at position 4 of 2H-chromen-2-one derivatives in the search of potent and selective monoamine oxidase B inhibitors. Eur J Med Chem 2013; 70:723-39. [DOI: 10.1016/j.ejmech.2013.09.034] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2013] [Revised: 09/11/2013] [Accepted: 09/14/2013] [Indexed: 11/18/2022]
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106
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Jafarpour F, Olia MBA, Hazrati H. Highly Regioselective α-Arylation of CoumarinsviaPalladium-Catalyzed CH Activation/Desulfitative Coupling. Adv Synth Catal 2013. [DOI: 10.1002/adsc.201300707] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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107
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Liu ZH, Li DJ, Jiang D, Xiao C, Song ZG, Jin YH. Design, synthesis and antitumor activity in vitro of a series of 3-arylcoumarins. Chem Res Chin Univ 2013. [DOI: 10.1007/s40242-013-3107-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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108
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Comparative study of the 3-phenylcoumarin scaffold: Synthesis, X-ray structural analysis and semiempirical calculations of a selected series of compounds. J Mol Struct 2013. [DOI: 10.1016/j.molstruc.2013.07.037] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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109
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Matos MJ, Hogger V, Gaspar A, Kachler S, Borges F, Uriarte E, Santana L, Klotz KN. Synthesis and adenosine receptors binding affinities of a series of 3-arylcoumarins. ACTA ACUST UNITED AC 2013; 65:1590-7. [PMID: 24118065 DOI: 10.1111/jphp.12135] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2013] [Accepted: 07/23/2013] [Indexed: 12/29/2022]
Abstract
OBJECTIVES In the present communication, we report the synthesis, pharmacological evaluation, theoretical evaluation of absorption, distribution, metabolism and excretion properties and structure-activity relationship study of a selected series of 3-arylcoumarins (compounds 1-9). Adenosine receptors (ARs) binding activity and selectivity of the synthesized compounds 1-9 were evaluated in this study. Different substituents were introduced in both benzene rings of the evaluated scaffold, at positions 6 and 3' or 4' of the moiety. The lack of data on the 3-arylcoumarin scaffold encouraged us to explore the ARs' binding activity of a selected series of derivatives. METHODS A new series of coumarins (compounds 1-9) were synthesized and evaluated by radioligand binding studies towards ARs. KEY FINDINGS Analysing the experimental data, it can be observed that neither the simple 3-arylcoumarin nor the 4'-nitro derivatives presented detectable binding affinity for the evaluated receptors, although most of the other substituted derivatives have good binding affinity profiles, especially against the hA1 /hA3 or only hA3 AR. CONCLUSIONS The most remarkable derivative is compound 2, presenting the best affinity for hA3 AR (Ki = 2680 nM) and significant selectivity for this subtype.
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Affiliation(s)
- Maria João Matos
- CIQUP/Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade do Porto, Porto, Portugal; Departamento de Química Orgánica, Facultad de Farmacia, Universidad de Santiago de Compostela, Santiago de Compostela, Spain
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110
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Remarkable antioxidant properties of a series of hydroxy-3-arylcoumarins. Bioorg Med Chem 2013; 21:3900-6. [DOI: 10.1016/j.bmc.2013.04.015] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2012] [Revised: 03/26/2013] [Accepted: 04/03/2013] [Indexed: 12/18/2022]
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111
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Synthesis, NMR characterization, X-ray structural analysis and theoretical calculations of amide and ester derivatives of the coumarin scaffold. J Mol Struct 2013. [DOI: 10.1016/j.molstruc.2013.03.014] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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112
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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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113
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Synthesis of 3-arylcoumarins through N-heterocyclic carbene catalyzed condensation and annulation of 2-chloro-2-arylacetaldehydes with salicylaldehydes. Tetrahedron 2013. [DOI: 10.1016/j.tet.2013.03.025] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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114
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Patil PO, Bari SB, Firke SD, Deshmukh PK, Donda ST, Patil DA. A comprehensive review on synthesis and designing aspects of coumarin derivatives as monoamine oxidase inhibitors for depression and Alzheimer’s disease. Bioorg Med Chem 2013; 21:2434-50. [DOI: 10.1016/j.bmc.2013.02.017] [Citation(s) in RCA: 150] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2012] [Revised: 02/08/2013] [Accepted: 02/11/2013] [Indexed: 12/23/2022]
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115
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Ferino G, Cadoni E, Matos MJ, Quezada E, Uriarte E, Santana L, Vilar S, Tatonetti NP, Yáñez M, Viña D, Picciau C, Serra S, Delogu G. MAO Inhibitory Activity of 2-Arylbenzofurans versus 3-Arylcoumarins: Synthesis, in vitro Study, and Docking Calculations. ChemMedChem 2013; 8:956-66. [DOI: 10.1002/cmdc.201300048] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2013] [Revised: 04/02/2013] [Indexed: 01/03/2023]
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116
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Pisani L, Barletta M, Soto-Otero R, Nicolotti O, Mendez-Alvarez E, Catto M, Introcaso A, Stefanachi A, Cellamare S, Altomare C, Carotti A. Discovery, Biological Evaluation, and Structure–Activity and −Selectivity Relationships of 6′-Substituted (E)-2-(Benzofuran-3(2H)-ylidene)-N-methylacetamides, a Novel Class of Potent and Selective Monoamine Oxidase Inhibitors. J Med Chem 2013; 56:2651-64. [DOI: 10.1021/jm4000769] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Leonardo Pisani
- Dipartimento di Farmacia −
Scienze del Farmaco, Università degli Studi di Bari “Aldo Moro”, Via E. Orabona, 4, I-70125
Bari, Italy
| | - Maria Barletta
- Dipartimento di Farmacia −
Scienze del Farmaco, Università degli Studi di Bari “Aldo Moro”, Via E. Orabona, 4, I-70125
Bari, Italy
| | - Ramon Soto-Otero
- Grupo de Neuroquimica,
Departamento
de Bioquimica y Biologia Molecular, Facultad de Medicina, Universidad de Santiago de Compostela, San Francisco
I, E-15782, Santiago de Compostela, Spain
| | - Orazio Nicolotti
- Dipartimento di Farmacia −
Scienze del Farmaco, Università degli Studi di Bari “Aldo Moro”, Via E. Orabona, 4, I-70125
Bari, Italy
| | - Estefania Mendez-Alvarez
- Grupo de Neuroquimica,
Departamento
de Bioquimica y Biologia Molecular, Facultad de Medicina, Universidad de Santiago de Compostela, San Francisco
I, E-15782, Santiago de Compostela, Spain
| | - Marco Catto
- Dipartimento di Farmacia −
Scienze del Farmaco, Università degli Studi di Bari “Aldo Moro”, Via E. Orabona, 4, I-70125
Bari, Italy
| | - Antonellina Introcaso
- Dipartimento di Farmacia −
Scienze del Farmaco, Università degli Studi di Bari “Aldo Moro”, Via E. Orabona, 4, I-70125
Bari, Italy
| | - Angela Stefanachi
- Dipartimento di Farmacia −
Scienze del Farmaco, Università degli Studi di Bari “Aldo Moro”, Via E. Orabona, 4, I-70125
Bari, Italy
| | - Saverio Cellamare
- Dipartimento di Farmacia −
Scienze del Farmaco, Università degli Studi di Bari “Aldo Moro”, Via E. Orabona, 4, I-70125
Bari, Italy
| | - Cosimo Altomare
- Dipartimento di Farmacia −
Scienze del Farmaco, Università degli Studi di Bari “Aldo Moro”, Via E. Orabona, 4, I-70125
Bari, Italy
| | - Angelo Carotti
- Dipartimento di Farmacia −
Scienze del Farmaco, Università degli Studi di Bari “Aldo Moro”, Via E. Orabona, 4, I-70125
Bari, Italy
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117
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Matos MJ, Vilar S, Gonzalez-Franco RM, Uriarte E, Santana L, Friedman C, Tatonetti NP, Viña D, Fontenla JA. Novel (coumarin-3-yl)carbamates as selective MAO-B inhibitors: synthesis, in vitro and in vivo assays, theoretical evaluation of ADME properties and docking study. Eur J Med Chem 2013; 63:151-61. [PMID: 23474901 DOI: 10.1016/j.ejmech.2013.02.009] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2012] [Revised: 02/04/2013] [Accepted: 02/08/2013] [Indexed: 01/02/2023]
Abstract
A series of (coumarin-3-yl)carbamates was synthesized and evaluated in vitro as monoamine oxidase (MAO-A and MAO-B) inhibitors. Most of the new compounds selectively inhibited MAO-B isoenzyme with IC50 values in the micro or nanoMolar ranges. Since these compounds must achieve the brain cells, theoretical evaluation of ADME properties were also carried out. Compound 8 (benzyl(coumarin-3-yl)carbamate), which presented the most interesting in vitro MAO-B inhibitory profile (IC50 against MAO-B = 45 nM), was subjected to further studies. This in vitro MAO-B inhibitory activity is comparable with that of the selegiline, the reference compound (IC50 against MAO-B = 20 nM). Taking into account the in vitro results of compound 8, in vivo assays and docking calculations were also carried out for this derivative.
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Affiliation(s)
- Maria J Matos
- Department of Organic Chemistry, Faculty of Pharmacy, University of Santiago de Compostela, 15782 Santiago de Compostela, Spain.
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118
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Vazquez-Rodriguez S, Matos MJ, Santana L, Uriarte E, Borges F, Kachler S, Klotz KN. Chalcone-based derivatives as new scaffolds for hA3 adenosine receptor antagonists. J Pharm Pharmacol 2013; 65:697-703. [DOI: 10.1111/jphp.12028] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2012] [Accepted: 12/19/2012] [Indexed: 11/29/2022]
Abstract
Abstract
Objectives
With the aim of finding new adenosine receptor (AR) ligands based on the chalcone scaffold, we report the synthesis of a new series of coumarin–chalcone hybrids and the pharmacological characterization of their actions at four subtypes of AR.
Methods
The synthesized compounds 5–10 were characterized in radioligand binding (A1, A2A and A3) and adenylyl cyclase activity assays (A2B) to determine the affinity of the compounds for the four human AR (hAR) subtypes.
Key findings
Coumarin–chalcone hybrids were found to be ligands with a novel structure, not reported thus far, that showed varying affinity and selectivity for AR subtypes.
Conclusions
The coumarin–chalcone hybrids in which ring B of the chalcone scaffold was a thiophene (compounds 5 and 9) were found to be the most potent compounds of the series. Compound 9, in which ring A of the chalcone moiety was the phenyl ring of the coumarin, showed similar activity against hA1, hA2A and hA3 ARs, while compound 5, in which ring A of the chalcone was substituted by the benzopyrone ring of the coumarin moiety, showed similar activity only at the hA3 AR and, therefore, was deemed to be selective (Ki (dissociation constant) = 5160 nm).
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Affiliation(s)
- Saleta Vazquez-Rodriguez
- Departamento de Química Orgánica, Facultad de Farmacia, Universidad de Santiago de Compostela, Santiago de Compostela, Spain
| | - Maria João Matos
- Departamento de Química Orgánica, Facultad de Farmacia, Universidad de Santiago de Compostela, Santiago de Compostela, Spain
- CIQUP/Departmento de Química e Bioquímica, Faculdade de Ciências, Universidade do Porto, Porto, Portugal
| | - Lourdes Santana
- Departamento de Química Orgánica, Facultad de Farmacia, Universidad de Santiago de Compostela, Santiago de Compostela, Spain
| | - Eugenio Uriarte
- Departamento de Química Orgánica, Facultad de Farmacia, Universidad de Santiago de Compostela, Santiago de Compostela, Spain
| | - Fernanda Borges
- CIQUP/Departmento de Química e Bioquímica, Faculdade de Ciências, Universidade do Porto, Porto, Portugal
| | - Sonja Kachler
- Institut für Pharmakologie und Toxikologie, Universität Würzburg, Würzburg, Germany
| | - Karl-Norbert Klotz
- Institut für Pharmakologie und Toxikologie, Universität Würzburg, Würzburg, Germany
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Synthesis and structure-activity relationships of novel amino/nitro substituted 3-arylcoumarins as antibacterial agents. Molecules 2013; 18:1394-404. [PMID: 23348993 PMCID: PMC6269744 DOI: 10.3390/molecules18021394] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2012] [Revised: 01/15/2013] [Accepted: 01/17/2013] [Indexed: 01/12/2023] Open
Abstract
A new series of amino/nitro-substituted 3-arylcoumarins were synthesized and their antibacterial activity against clinical isolates of Staphylococcus aureus (Gram-positive) and Escherichia coli (Gram-negative) was evaluated. Some of these molecules exhibited antibacterial activity against S. aureus comparable to the standards used (oxolinic acid and ampicillin). The preliminary structure-activity relationship (SAR) study showed that the antibacterial activity against S. aureus depends on the position of the 3-arylcoumarin substitution pattern. With the aim of finding the structural features for the antibacterial activity and selectivity, in the present manuscript different positions of nitro, methyl, methoxy, amino and bromo substituents on the 3-arylcoumarin scaffold were reported.
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120
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Andrade MF, Kabeya LM, Azzolini AECS, Santos EOL, Figueiredo-Rinhel ASG, Paris MRP, Emery FS, Pupo MT, Lucisano-Valim YM. 3-Phenylcoumarin derivatives selectively modulate different steps of reactive oxygen species production by immune complex-stimulated human neutrophils. Int Immunopharmacol 2013; 15:387-94. [PMID: 23333455 DOI: 10.1016/j.intimp.2013.01.001] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2012] [Accepted: 01/02/2013] [Indexed: 01/19/2023]
Abstract
Immune complex (IC) deposition in tissues triggers the release of harmful oxidant and lytic compounds by neutrophils. We examined how ten 3-phenylcoumarin derivatives affect the reactive oxygen species (ROS) production by IC-stimulated human neutrophils. Most of the 3-phenylcoumarins inhibited the luminol-enhanced chemiluminescence (CL-lum) more strongly than they inhibited the lucigenin-enhanced chemiluminescence (CL-luc), without clear signs of toxicity. The most effective CL-lum inhibitors, 6,7-dihydroxy-3-[3',4'-methylenedioxyphenyl]-coumarin (5) and 6,7-dihydroxy-3-[3',4'-dihydroxyphenyl]-coumarin (19), also inhibited myeloperoxidase activity more potently and had higher hypochlorous acid scavenging ability, but did not affect the NADPH-oxidase activity. The type, number, and position of the substituent influenced the pharmacological effects of 3-phenylcoumarins; however, the structural requirements for CL-lum and CL-luc inhibition were a little different. Compounds 5 and 19 are promising prototypes of therapeutic molecules to modulate ROS production by neutrophils in IC-mediated inflammatory diseases.
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Affiliation(s)
- Micássio F Andrade
- Departamento de Bioquímica e Imunologia, Faculdade de Medicina de Ribeirão Preto da Universidade de São Paulo, Avenida Bandeirantes n. 3900, CEP 14049-900, Ribeirão Preto, SP, Brazil
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121
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Janeiro P, Matos MJ, Santana L, Uriarte E, Oliveira-Brett AM. New hydroxylated 3-arylcoumarins, synthesis and electrochemical study. J Electroanal Chem (Lausanne) 2013. [DOI: 10.1016/j.jelechem.2012.10.020] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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122
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Matos MJ, Santana L, Uriarte E. N-(2-Oxo-2H-chromen-3-yl)cyclo-hexane-carboxamide. Acta Crystallogr Sect E Struct Rep Online 2012; 68:o3447-8. [PMID: 23476261 PMCID: PMC3589025 DOI: 10.1107/s1600536812047903] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2012] [Accepted: 11/21/2012] [Indexed: 11/22/2022]
Abstract
In the title compound, C16H17NO3, the coumarin moiety is essentially planar [maximum deviation from the mean plane formed by the C and O atoms of the coumarin = 0.0183 (12) Å] and that the cyclohexane ring adopts the usual chair conformation. The dihedral angle between the mean plane of the coumarin residue and the plane of the amide residue (defined as the N, C and O atoms) is 18.9 (2)°. There are two intramolecular hydrogen bonds involving the amide group. In one, the N atom acts as donor to the ketonic O atom and in the other, the amide O atom acts as acceptor of a C—H group of the coumarin. In the crystal, molecules are linked into inversion dimers by pairs of N—H⋯O contacts and these dimers are linked into pairs by weak C—H⋯O hydrogen bonds. The combination of these interactions creates a chain of rings which runs parallel to [2-10]. C—H⋯π and π–π [centroid–centroid distance = 3.8654 (10) Å] interactions are also observed.
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Affiliation(s)
- Maria J Matos
- Department of Organic Chemistry, University of Santiago de Compostela, Santiago de Compostela, Spain
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123
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Abdelhafez OM, Amin KM, Ali HI, Abdalla MM, Batran RZ. Synthesis of New 7-Oxycoumarin Derivatives As Potent and Selective Monoamine Oxidase A Inhibitors. J Med Chem 2012; 55:10424-36. [DOI: 10.1021/jm301014y] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Omaima M. Abdelhafez
- Chemistry of Natural Products
Department, National Research Center, Dokki, Egypt
| | - Kamelia M. Amin
- Pharmaceutical Chemistry Department,
Faculty of Pharmacy, Cairo University, Egypt
| | - Hamed I. Ali
- Pharmaceutical Chemistry Department,
Faculty of Pharmacy, Helwan University, Egypt
| | | | - Rasha Z. Batran
- Chemistry of Natural Products
Department, National Research Center, Dokki, Egypt
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Helguera AM, Pérez-Garrido A, Gaspar A, Reis J, Cagide F, Vina D, Cordeiro MNDS, Borges F. Combining QSAR classification models for predictive modeling of human monoamine oxidase inhibitors. Eur J Med Chem 2012. [PMID: 23207409 DOI: 10.1016/j.ejmech.2012.10.035] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Due to their role in the metabolism of monoamine neurotransmitters, MAO-A and MAO-B present a significant pharmacological interest. For instance the inhibitors of human MAO-B are considered useful tools for the treatment of Parkinson Disease. Therefore, the rational design and synthesis of new MAOs inhibitors is considered of great importance for the development of new and more effective treatments of Parkinson Disease. In this work, Quantitative Structure Activity Relationships (QSAR) has been developed to predict the human MAO inhibitory activity and selectivity. The first step was the selection of a suitable dataset of heterocyclic compounds that include chromones, coumarins, chalcones, thiazolylhydrazones, etc. These compounds were previously synthesized in one of our laboratories, or elsewhere, and their activities measured by the same assays and for the same laboratory staff. Applying linear discriminant analysis to data derived from a variety of molecular representations and feature selection algorithms, reliable QSAR models were built which could be used to predict for test compounds the inhibitory activity and selectivity toward human MAO. This work also showed how several QSAR models can be combined to make better predictions. The final models exhibit significant statistics, interpretability, as well as displaying predictive power on an external validation set made up of chromone derivatives with unknown activity (that are being reported here for first time) synthesized by our group, and coumarins recently reported in the literature.
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Affiliation(s)
- Aliuska Morales Helguera
- CIQ, Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade do Porto, Porto 4169-007, Portugal.
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Matos MJ, Santana L, Uriarte E. 3-Phenyl-coumarin. Acta Crystallogr Sect E Struct Rep Online 2012; 68:o2645. [PMID: 22969544 PMCID: PMC3435673 DOI: 10.1107/s1600536812034277] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2012] [Accepted: 08/01/2012] [Indexed: 05/11/2023]
Abstract
In the title compound, C(15)H(10)O(2), a 3-phenyl derivative of the coumarin (also known as 2H-chromen-2-one or 2H-1-benzopyran-2-one) scaffold, the C(p)-C(p)-C(c)-C(c) torsion angle between the coumarin (c) ring system and the phenyl (p) ring is -47.6 (2)°.
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Affiliation(s)
- Maria J. Matos
- Department of Organic Chemistry, University of Santiago de Compostela, Santiago de Compostela, Spain
- Correspondence e-mail:
| | - Lourdes Santana
- Department of Organic Chemistry, University of Santiago de Compostela, Santiago de Compostela, Spain
| | - Eugenio Uriarte
- Department of Organic Chemistry, University of Santiago de Compostela, Santiago de Compostela, Spain
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Mitigation of H(2)O(2)-Induced Mitochondrial-Mediated Apoptosis in NG108-15 Cells by Novel Mesuagenin C from Mesua kunstleri (King) Kosterm. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2012; 2012:156521. [PMID: 22956972 PMCID: PMC3418696 DOI: 10.1155/2012/156521] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/29/2012] [Revised: 04/16/2012] [Accepted: 04/20/2012] [Indexed: 12/31/2022]
Abstract
This study was aimed to isolate and evaluate neuroprotective compounds from the hexane extract of the bark of Mesua kunstleri (Clusiaceae) on H(2)O(2)-induced apoptosis in NG108-15 cells. Five 4-phenylcoumarins were isolated by using various chromatographic techniques via neuroprotective activity-guided fractionation and isolation from the active hexane extract. The chemical structures of the isolated compounds were confirmed by NMR spectroscopic data interpretation and comparison with literature values. Cell viability data demonstrated that mesuagenin C 3 significantly increased cell viability. Hoechst 33342/PI staining illustrated mesuagenin C 3 was able to abate the nuclear shrinkage, chromatin condensation and formation of apoptotic bodies. Pretreatment with mesuagenin C 3 reduced total annexin V positive cells and increased the level of intracellular glutathione (GSH). Mesuagenin C 3 attenuated membrane potential (Δψm), reduced Bax/Bcl-2 ratio and inactivated of caspase-3/7 and -9. These results indicated that mesuagenin C 3 could protect NG108-15 cells against H(2)O(2)-induced apoptosis by increasing intracellular GSH level, aggrandizing Δψm, and modulating apoptotic signalling pathway through Bcl-2 family and caspase-3/7 and -9. These findings confirmed the involvement of intrinsic apoptotic pathway in H(2)O(2)-induced apoptosis and suggested that mesuagenin C 3 may have potential therapeutic properties for neurodegenerative diseases.
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Pérez-Cruz F, Serra S, Delogu G, Lapier M, Maya JD, Olea-Azar C, Santana L, Uriarte E. Antitrypanosomal and antioxidant properties of 4-hydroxycoumarins derivatives. Bioorg Med Chem Lett 2012; 22:5569-73. [PMID: 22832320 DOI: 10.1016/j.bmcl.2012.07.013] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2012] [Revised: 06/30/2012] [Accepted: 07/04/2012] [Indexed: 11/28/2022]
Abstract
In the present communication we prepared a series of six 4-hydroxycoumarin derivatives, isosters of quercetin, recognized as an antioxidant natural compound, with the aim of evaluating the antitrypanosomal activity against Trypanosoma cruzi, the parasite responsible for Chagas disease, and the antioxidant properties. We have used the 4-hydroxycoumarin moiety (compound 1) as the molecular template for the synthesis of compounds 2-7. These derivates have shown moderate trypanocidal activity. However they have been proved to be good antioxidants. In particular compound 7 is the most active antioxidant and it is, therefore, a potential candidate for a successful employment in conditions characterized by free radicals overproduction.
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Affiliation(s)
- Fernanda Pérez-Cruz
- Departamento de Química Inorgánica y Analitica, Laboratorio de radicales libres y antioxidantes, Facultad de Ciencias Químicas y Farmacéuticas, Universidad de Chile, Casilla 233, Santiago 1, Chile
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128
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Carradori S, Secci D, Bolasco A, Chimenti P, D'Ascenzio M. Patent-related survey on new monoamine oxidase inhibitors and their therapeutic potential. Expert Opin Ther Pat 2012; 22:759-801. [DOI: 10.1517/13543776.2012.698613] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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129
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Matos MJ, Santana L, Uriarte E, Serra S, Corda M, Fadda MB, Era B, Fais A. Tyrosine-like condensed derivatives as tyrosinase inhibitors. J Pharm Pharmacol 2012; 64:742-6. [DOI: 10.1111/j.2042-7158.2012.01467.x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Abstract
Objectives
We report the pharmacological evaluation of a new series of 3-aminocoumarins differently substituted with hydroxyl groups, which have been synthesized because they include in their structures the tyrosine fragment (tyrosine-like compounds), with the aim of discovering structural features necessary for tyrosinase inhibitory activity.
Methods
The synthesized compounds 4 and 7–9 were evaluated in vitro as mushroom tyrosinase inhibitors.
Key findings
Two of the described compounds showed lower IC50 (concentration giving 50% inhibition of tyrosinase activity) than umbelliferone, used as a reference compound.
Conclusions
Compound 7 (IC50 = 53 µm) was the best tyrosinase inhibitor of this small series, having an IC50 value 10-fold lower than umbelliferone. Compound 7 (3-amino-7-hydroxycoumarin) had amino and hydroxyl groups precisely mimicking the same positions that both groups occupy on the tyrosine molecule.
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Affiliation(s)
- Maria João Matos
- Departamento de Química Orgánica, Facultad de Farmacia, Universidad de Santiago de Compostela, Santiago de Compostela, Spain
| | - Lourdes Santana
- Departamento de Química Orgánica, Facultad de Farmacia, Universidad de Santiago de Compostela, Santiago de Compostela, Spain
| | - Eugenio Uriarte
- Departamento de Química Orgánica, Facultad de Farmacia, Universidad de Santiago de Compostela, Santiago de Compostela, Spain
| | - Silvia Serra
- Departamento de Química Orgánica, Facultad de Farmacia, Universidad de Santiago de Compostela, Santiago de Compostela, Spain
- Dipartimento Farmaco Chimico Tecnologico, Facoltà di Farmacia, Cagliari, Italy
| | - Marcella Corda
- Dipartimento di Scienze della Vita e dell'Ambiente, Università degli Studi di Cagliari, Cagliari, Italy
| | - Maria Benedetta Fadda
- Dipartimento di Scienze della Vita e dell'Ambiente, Università degli Studi di Cagliari, Cagliari, Italy
| | - Benedetta Era
- Dipartimento di Scienze della Vita e dell'Ambiente, Università degli Studi di Cagliari, Cagliari, Italy
| | - Antonella Fais
- Dipartimento di Scienze della Vita e dell'Ambiente, Università degli Studi di Cagliari, Cagliari, Italy
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Viña D, Matos MJ, Ferino G, Cadoni E, Laguna R, Borges F, Uriarte E, Santana L. 8-Substituted 3-Arylcoumarins as Potent and Selective MAO-B Inhibitors: Synthesis, Pharmacological Evaluation, and Docking Studies. ChemMedChem 2012; 7:464-70. [PMID: 22287164 DOI: 10.1002/cmdc.201100538] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2011] [Revised: 01/13/2012] [Indexed: 01/05/2023]
Affiliation(s)
- Dolores Viña
- Departamento de Farmacología, Facultad de Farmacia, Universidad de Santiago de Compostela, 15782 Santiago de Compostela, Spain
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