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Amaral LM, Moniz T, Leite A, Oliveira A, Fernandes P, Ramos MJ, Araújo AN, Freitas M, Fernandes E, Rangel M. A combined experimental and computational study to discover novel tyrosinase inhibitors. J Inorg Biochem 2022; 234:111879. [DOI: 10.1016/j.jinorgbio.2022.111879] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2022] [Revised: 05/12/2022] [Accepted: 05/27/2022] [Indexed: 11/29/2022]
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2
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Santos CS, Rodrigues E, Ferreira S, Moniz T, Leite A, Carvalho SMP, Vasconcelos MW, Rangel M. Foliar application of 3-hydroxy-4-pyridinone Fe-chelate [Fe(mpp) 3 ] induces responses at the root level amending iron deficiency chlorosis in soybean. PHYSIOLOGIA PLANTARUM 2021; 173:235-245. [PMID: 33629743 DOI: 10.1111/ppl.13367] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/20/2020] [Revised: 02/07/2021] [Accepted: 02/10/2021] [Indexed: 06/12/2023]
Abstract
Iron (Fe) deficiency chlorosis (IDC) affects the growth of several crops, especially when growing in alkaline soils. The application of synthetic Fe-chelates is one of the most commonly used strategies in IDC amendment, despite their associated negative environmental impacts. In a previous work, the Fe-chelate tris(3-hydroxy-1-(H)-2-methyl-4-pyridinonate) iron(III) [Fe(mpp)3 ] has shown great potential for alleviating IDC in soybean (Glycine max) in the early stages of plant development under hydroponic conditions. Herein, its efficacy was verified under soil conditions in soybean grown from seed to full maturity. Chlorophyll levels, plant growth, root and shoot mineral accumulation (K, Mg, Ca, Na, P, Mn, Zn, Ni, and Co) and FERRITIN expression were accessed at V5 phenological stage. Compared to a commonly used Fe chelate, FeEDDHA, supplementation with [Fe(mpp)3 ] led to a 29% higher relative chlorophyll content, 32% higher root biomass, 36% higher trifoliate Fe concentration, and a twofold increase in leaf FERRITIN gene expression. [Fe(mpp)3 ] supplementation also resulted in increased accumulation of P, K, Zn, and Co. At full maturity, the remaining plants were harvested and [Fe(mpp)3 ] application led to a 32% seed yield increase when compared to FeEDDHA. This is the first report on the use of [Fe(mpp)3 ] under alkaline soil conditions for IDC correction, and we show that its foliar application has a longer-lasting effect than FeEDDHA, induces efficient root responses, and promotes the uptake of other nutrients.
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Affiliation(s)
- Carla S Santos
- CBQF - Centro de Biotecnologia e Química Fina - Laboratório Associado, Escola Superior de Biotecnologia, Universidade Católica Portuguesa, Porto, Portugal
| | - Elsa Rodrigues
- CBQF - Centro de Biotecnologia e Química Fina - Laboratório Associado, Escola Superior de Biotecnologia, Universidade Católica Portuguesa, Porto, Portugal
- GreenUPorto - Research Centre on Sustainable Agrifood Production and DGAOT, Faculty of Sciences, University of Porto, Vila do Conde, Portugal
| | - Sofia Ferreira
- REQUIMTE, LAQV, Instituto de Ciências Biomédicas de Abel Salazar, Universidade do Porto, Porto, Portugal
| | - Tânia Moniz
- REQUIMTE, LAQV, Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade do Porto, Porto, Portugal
| | - Andreia Leite
- REQUIMTE, LAQV, Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade do Porto, Porto, Portugal
| | - Susana M P Carvalho
- GreenUPorto - Research Centre on Sustainable Agrifood Production and DGAOT, Faculty of Sciences, University of Porto, Vila do Conde, Portugal
| | - Marta W Vasconcelos
- CBQF - Centro de Biotecnologia e Química Fina - Laboratório Associado, Escola Superior de Biotecnologia, Universidade Católica Portuguesa, Porto, Portugal
| | - Maria Rangel
- REQUIMTE, LAQV, Instituto de Ciências Biomédicas de Abel Salazar, Universidade do Porto, Porto, Portugal
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Santos CS, Leite A, Vinhas S, Ferreira S, Moniz T, Vasconcelos MW, Rangel M. A combined physiological and biophysical approach to understand the ligand-dependent efficiency of 3-hydroxy-4-pyridinone Fe-chelates. PLANT DIRECT 2020; 4:e00256. [PMID: 32821874 PMCID: PMC7429444 DOI: 10.1002/pld3.256] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/06/2020] [Revised: 07/20/2020] [Accepted: 07/22/2020] [Indexed: 05/11/2023]
Abstract
Ligands of the 3-hydroxy-4-pyridinone (3,4-HPO) class were considered eligible to formulate new Fe fertilizers for Iron Deficiency Chlorosis (IDC). Soybean (Glycine max L.) plants grown in hydroponic conditions and supplemented with Fe-chelate [Fe(mpp)3] were significantly greener, had increased biomass, and were able to translocate more iron from the roots to the shoots than those supplemented with an equal amount of the commercially available chelate [FeEDDHA]. To understand the influence of the structure of 3,4-HPO ligand on the role of the Fe-chelate to improve Fe-uptake, we investigated and report here the effect of Fe-chelates ([Fe(mpp)3], [Fe(dmpp)3], and [Fe(etpp)3]) in addressing IDC. Chlorosis development was assessed by measurement of morphological parameters, quantification of chlorophyll and Fe, and other micronutrient contents, as well as measurement of enzymatic activity (FCR) and gene expression (FRO2, IRT1, and Ferritin). All [Fe(3,4-HPO)3] chelates were able to provide Fe to plants and prevent IDC but with a different efficiency depending on the ligand. We hypothesize that this may be related with the distinct physicochemical characteristics of ligands and complexes, namely, the diverse hydrophilic-lipophilic balance of the three chelates. To test the hypothesis, we performed an EPR biophysical study using liposomes prepared from a soybean (Glycine3 max L.) lipid extract and spin probes. The results showed that the most effective chelate [Fe(mpp)3] shows a preferential location close to the surface while the others prefer the hydrophobic region inside the bilayer. SIGNIFICANCE STATEMENT The 3-hydroxy-4-pyridinone Fe-chelates, [Fe(mpp)3], [Fe(dmpp)3], and [Fe(etpp)3], were all able to provide Fe to plants and prevent IDC. Efficacy is dependent on the structure of the ligand. From an EPR biophysical study using spin probes and liposomes, prepared from a soybean lipid extract, we hypothesize that this may be related with the distinct preferential location close to the surface or on the hydrophobic region of the lipid bilayer. [Fe(mpp)3] provide higher amounts of Fe in the leaves.
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Affiliation(s)
- Carla S. Santos
- CBQF – Centro de Biotecnologia e Química Fina – Laboratório AssociadoUniversidade Católica PortuguesaEscola Superior de BiotecnologiaPortoPortugal
| | - Andreia Leite
- REQUIMTELAQVDepartamento de Química e BioquímicaFaculdade de CiênciasUniversidade do PortoPortoPortugal
| | - Sílvia Vinhas
- REQUIMTELAQVDepartamento de Química e BioquímicaFaculdade de CiênciasUniversidade do PortoPortoPortugal
| | - Sofia Ferreira
- REQUIMTELAQVInstituto de Ciências Biomédicas de Abel SalazarUniversidade do PortoPortoPortugal
| | - Tânia Moniz
- REQUIMTELAQVDepartamento de Química e BioquímicaFaculdade de CiênciasUniversidade do PortoPortoPortugal
| | - Marta W. Vasconcelos
- CBQF – Centro de Biotecnologia e Química Fina – Laboratório AssociadoUniversidade Católica PortuguesaEscola Superior de BiotecnologiaPortoPortugal
| | - Maria Rangel
- REQUIMTELAQVInstituto de Ciências Biomédicas de Abel SalazarUniversidade do PortoPortoPortugal
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Study of Iron Piperazine-Based Chelators as Potential Siderophore Mimetics. Pharmaceuticals (Basel) 2019; 12:ph12040160. [PMID: 31652873 PMCID: PMC6958365 DOI: 10.3390/ph12040160] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2019] [Revised: 10/17/2019] [Accepted: 10/22/2019] [Indexed: 11/17/2022] Open
Abstract
Gram-negative bacteria’s resistance such as Pseudomonas aeruginosa and the Burkholderia group to conventional antibiotics leads to therapeutic failure. Use of siderophores as Trojan horses to internalize antibacterial agents or toxic metals within bacteria is a promising strategy to overcome resistance phenomenon. To combat the Pseudomonas sp, we have synthesized and studied two piperazine-based siderophore mimetics carrying either catecholate moieties (1) or hydroxypyridinone groups (2) as iron chelators. These siderophore-like molecules were prepared in no more than four steps with good global yields. The physicochemical study has highlighted a strong iron affinity since their pFe values were higher than 20. 1 possesses even a pFe value superior than those of pyoverdine, the P. aeruginosa endogenous siderophore, suggesting its potential ability to compete with it. At physiological pH, 1 forms mainly a 2:3 complex with iron, whereas two species are observed for 2. Unfortunately, the corresponding Ga(III)-1 and 2 complexes showed no antibacterial activity against P. aeruginosa DSM 1117 strain. The evaluation of their siderophore-like activity showed that 1 and 2 could be internalized by the bacteria.
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Tuning the Anti(myco)bacterial Activity of 3-Hydroxy-4-pyridinone Chelators through Fluorophores. Pharmaceuticals (Basel) 2018; 11:ph11040110. [PMID: 30347802 PMCID: PMC6316862 DOI: 10.3390/ph11040110] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2018] [Revised: 10/17/2018] [Accepted: 10/18/2018] [Indexed: 02/08/2023] Open
Abstract
Controlling the sources of Fe available to pathogens is one of the possible strategies that can be successfully used by novel antibacterial drugs. We focused our interest on the design of chelators to address Mycobacterium avium infections. Taking into account the molecular structure of mycobacterial siderophores and considering that new chelators must be able to compete for Fe(III), we selected ligands of the 3-hydroxy-4-pyridinone class to achieve our purpose. After choosing the type of chelating unit it was also our objective to design chelators that could be monitored inside the cell and for that reason we designed chelators that could be functionalized with fluorophores. We didn’t realize at the time that the incorporation a fluorophore, to allow spectroscopic detection, would be so relevant for the antimycobacterial effect or to determine the affinity of the chelators towards biological membranes. From a biophysical perspective, this is a fascinating illustration of the fact that functionalization of a molecule with a particular label may lead to a change in its membrane permeation properties and result in a dramatic change in biological activity. For that reason we believe it is interesting to give a critical account of our entire work in this area and justify the statement “to label means to change”. New perspectives regarding combined therapeutic approaches and the use of rhodamine B conjugates to target closely related problems such as bacterial resistance and biofilm production are also discussed.
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Valle EMA, Maltarollo VG, Almeida MO, Honorio KM, dos Santos MC, Cerchiaro G. Time dependent-density functional theory (TD-DFT) and experimental studies of UV–Visible spectra and cyclic voltammetry for Cu(II) complex with Et2DTC. J Mol Struct 2018. [DOI: 10.1016/j.molstruc.2017.12.097] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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Santos CS, Carvalho SMP, Leite A, Moniz T, Roriz M, Rangel AOSS, Rangel M, Vasconcelos MW. Effect of tris(3-hydroxy-4-pyridinonate) iron(III) complexes on iron uptake and storage in soybean (Glycine max L.). PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2016; 106:91-100. [PMID: 27156133 DOI: 10.1016/j.plaphy.2016.04.050] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/25/2016] [Revised: 04/28/2016] [Accepted: 04/28/2016] [Indexed: 05/25/2023]
Abstract
Iron deficiency chlorosis (IDC) is a serious environmental problem affecting the growth of several crops in the world. The application of synthetic Fe(III) chelates is still one of the most common measures to correct IDC and the search for more effective Fe chelates remains an important issue. Herein, we propose a tris(3-hydroxy-4-pyridinonate) iron(III) complex, Fe(mpp)3, as an IDC corrector. Different morphological, biochemical and molecular parameters were assessed as a first step towards understanding its mode of action, compared with that of the commercial fertilizer FeEDDHA. Plants treated with the pyridinone iron(III) complexes were significantly greener and had increased biomass. The total Fe content was measured using ICP-OES and plants treated with pyridinone complexes accumulated about 50% more Fe than those treated with the commercial chelate. In particular, plants supplied with compound Fe(mpp)3 were able to translocate iron from the roots to the shoots and did not elicit the expression of the Fe-stress related genes FRO2 and IRT1. These results suggest that 3,4-HPO iron(III) chelates could be a potential new class of plant fertilizing agents.
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Affiliation(s)
- Carla S Santos
- Universidade Católica Portuguesa, CBQF - Centro de Biotecnologia e Química Fina - Laboratório Associado, Escola Superior de Biotecnologia, Rua Arquiteto Lobão Vital, Apartado 2511, 4202-401 Porto, Portugal
| | - Susana M P Carvalho
- Universidade Católica Portuguesa, CBQF - Centro de Biotecnologia e Química Fina - Laboratório Associado, Escola Superior de Biotecnologia, Rua Arquiteto Lobão Vital, Apartado 2511, 4202-401 Porto, Portugal; GreenUP/CITAB-UP & DGAOT, Faculty of Sciences, University of Porto, Campus Agrário de Vairão, Rua Padre Armando Quintas, 7, 4485-661 Vairão, Portugal
| | - Andreia Leite
- REQUIMTE-UCIBIO, Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade do Porto, 4069-007 Porto, Portugal
| | - Tânia Moniz
- REQUIMTE-UCIBIO, Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade do Porto, 4069-007 Porto, Portugal
| | - Mariana Roriz
- Universidade Católica Portuguesa, CBQF - Centro de Biotecnologia e Química Fina - Laboratório Associado, Escola Superior de Biotecnologia, Rua Arquiteto Lobão Vital, Apartado 2511, 4202-401 Porto, Portugal
| | - António O S S Rangel
- Universidade Católica Portuguesa, CBQF - Centro de Biotecnologia e Química Fina - Laboratório Associado, Escola Superior de Biotecnologia, Rua Arquiteto Lobão Vital, Apartado 2511, 4202-401 Porto, Portugal
| | - Maria Rangel
- REQUIMTE-UCIBIO, Instituto de Ciências Biomédicas de Abel Salazar, Universidade do Porto, 4050-313 Porto, Portugal.
| | - Marta W Vasconcelos
- Universidade Católica Portuguesa, CBQF - Centro de Biotecnologia e Química Fina - Laboratório Associado, Escola Superior de Biotecnologia, Rua Arquiteto Lobão Vital, Apartado 2511, 4202-401 Porto, Portugal.
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Leite A, Silva AMG, Coutinho C, Cunha-Silva L, de Castro B, Rangel M. Design of a Water Soluble Fluorescent 3-Hydroxy-4-Pyridinone Ligand Active at Physiological pH Values. J Fluoresc 2016; 26:1773-85. [DOI: 10.1007/s10895-016-1869-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2016] [Accepted: 06/14/2016] [Indexed: 01/08/2023]
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Jin B, Zheng R, Peng R, Chu S. Synthesis of New Bis(3-hydroxy-4-pyridinone) Ligands as Chelating Agents for Uranyl Complexation. Molecules 2016; 21:299. [PMID: 27005598 PMCID: PMC6273119 DOI: 10.3390/molecules21030299] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2016] [Revised: 02/19/2016] [Accepted: 02/23/2016] [Indexed: 11/16/2022] Open
Abstract
Five new bis(3-hydroxy-4-pyridinone) tetradentate chelators were synthesized in this study. The structures of these tetradentate chelators were characterized by ¹H-NMR, (13)C-NMR, FT-IR, UV-vis, and mass spectral analyses. The binding abilities of these tetradentate chelators for uranyl ion at pH 7.4 were also determined by UV spectrophotometry in aqueous media. Results showed that the efficiencies of these chelating agents are dependent on the linker length. Ligand 4b is the best chelator and suitable for further studies.
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Affiliation(s)
- Bo Jin
- State Key Laboratory Cultivation Base for Nonmetal Composites and Functional Materials, Southwest University of Science and Technology, Mianyang 621010, China.
| | - Rongzong Zheng
- State Key Laboratory Cultivation Base for Nonmetal Composites and Functional Materials, Southwest University of Science and Technology, Mianyang 621010, China.
| | - Rufang Peng
- State Key Laboratory Cultivation Base for Nonmetal Composites and Functional Materials, Southwest University of Science and Technology, Mianyang 621010, China.
| | - Shijin Chu
- State Key Laboratory Cultivation Base for Nonmetal Composites and Functional Materials, Southwest University of Science and Technology, Mianyang 621010, China.
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Moniz T, Coimbra JTS, Brás NF, Cunha-Silva L, Ramos MJ, Fernandes PA, de Castro B, Rangel M. Synthesis and structural characterization, by spectroscopic and computational methods, of two fluorescent 3-hydroxy-4-pyridinone chelators bearing sulphorhodamine B and naphthalene. RSC Adv 2016. [DOI: 10.1039/c5ra23217a] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
A crystal structure of a rhodamine labelled 3-hydroxy-4-pyridinone chelator and prediction of the range of conformations in solution is reported.
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Affiliation(s)
- T. Moniz
- REQUIMTE-UCIBIO
- Departamento de Química e Bioquímica
- Faculdade de Ciências
- Universidade do Porto
- 40169-007 Porto
| | - J. T. S. Coimbra
- REQUIMTE-UCIBIO
- Departamento de Química e Bioquímica
- Faculdade de Ciências
- Universidade do Porto
- 40169-007 Porto
| | - N. F. Brás
- REQUIMTE-UCIBIO
- Departamento de Química e Bioquímica
- Faculdade de Ciências
- Universidade do Porto
- 40169-007 Porto
| | - L. Cunha-Silva
- REQUIMTE-LAQV
- Departamento de Química e Bioquímica
- Faculdade de Ciências
- Universidade do Porto
- 40169-007 Porto
| | - M. J. Ramos
- REQUIMTE-UCIBIO
- Departamento de Química e Bioquímica
- Faculdade de Ciências
- Universidade do Porto
- 40169-007 Porto
| | - P. A. Fernandes
- REQUIMTE-UCIBIO
- Departamento de Química e Bioquímica
- Faculdade de Ciências
- Universidade do Porto
- 40169-007 Porto
| | - B. de Castro
- REQUIMTE-LAQV
- Departamento de Química e Bioquímica
- Faculdade de Ciências
- Universidade do Porto
- 40169-007 Porto
| | - M. Rangel
- REQUIMTE-UCIBIO
- Instituto de Ciências Biomédicas de Abel Salazar
- Universidade do Porto
- 4050-313 Porto
- Portugal
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Moniz T, de Castro B, Rangel M, Ivanova G. NMR study of the interaction of fluorescent 3-hydroxy-4-pyridinone chelators with DMPC liposomes. Phys Chem Chem Phys 2016; 18:5027-33. [DOI: 10.1039/c5cp05273d] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The NMR results corroborate the fact that the presence of the ethyl substituents in the amino groups of the xanthene ring and the thiourea link are fundamental to the ability of the chelator to diffuse across the lipid bilayer and consequently relevant for their enhanced biological activity.
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Affiliation(s)
- Tânia Moniz
- REQUIMTE-UCIBIO
- Departamento de Química e Bioquímica
- Faculdade de Ciências
- Universidade do Porto
- 4169-007 Porto
| | - Baltazar de Castro
- REQUIMTE-LAVQ
- Departamento de Química e Bioquímica
- Faculdade de Ciências
- Universidade do Porto
- 4169-007 Porto
| | - Maria Rangel
- REQUIMTE-UCIBIO
- Instituto de Ciências Biomédicas de Abel Salazar
- Universidade do Porto
- Porto
- Portugal
| | - Galya Ivanova
- REQUIMTE-UCIBIO
- Departamento de Química e Bioquímica
- Faculdade de Ciências
- Universidade do Porto
- 4169-007 Porto
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Chittigori J, Kumar A, Li L, Thota S, Kokil A, Samuelson LA, Sandman DJ, Kumar J. Synthesis of a self organizable curcumin derivative and investigation of its interaction with metals in 100% aqueous media. Tetrahedron 2014. [DOI: 10.1016/j.tet.2013.11.071] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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13
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Silva AM, Leite A, Gonzalez P, Domingues MRM, Gameiro P, de Castro B, Rangel M. Use of a porphyrin platform and 3,4-HPO chelating units to synthesize ligands with N4 and O4 coordination sites. Tetrahedron 2011. [DOI: 10.1016/j.tet.2011.07.063] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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