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Santamarina SC, Heredia DA, Durantini AM, Durantini EN. Porphyrin Polymers Bearing N, N'-Ethylene Crosslinkers as Photosensitizers against Bacteria. Polymers (Basel) 2022; 14:polym14224936. [PMID: 36433062 PMCID: PMC9696963 DOI: 10.3390/polym14224936] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2022] [Revised: 11/04/2022] [Accepted: 11/11/2022] [Indexed: 11/18/2022] Open
Abstract
The appearance of microbes resistant to antibiotics requires the development of alternative therapies for the treatment of infectious diseases. In this work two polymers, PTPPF16-EDA and PZnTPPF16-EDA, were synthesized by the nucleophilic aromatic substitution of 5,10,15,20-tetrakis(pentafluorophenyl)porphyrin and its Zn(II) complex with ethylenediamine, respectively. In these structures, the tetrapyrrolic macrocycles were N,N'-ethylene crosslinked, which gives them greater mobility. The absorption spectra of the polymers showed a bathochromic shift of the Soret band of ~10 nm with respect to the monomers. This effect was also found in the red fluorescence emission peaks. Furthermore, both polymeric materials produced singlet molecular oxygen with high quantum yields. In addition, they were capable of generating superoxide anion radicals. Photodynamic inactivation sensitized by these polymers was tested in Staphylococcus aureus and Escherichia coli bacteria. A decrease in cell viability greater than 7 log (99.9999%) was observed in S. aureus incubated with 0.5 μM photosensitizer upon 30 min of irradiation. Under these conditions, a low inactivation of E. coli (0.5 log) was found. However, when the cells were treated with KI, the elimination of the Gram-negative bacteria was achieved. Therefore, these polymeric structures are interesting antimicrobial photosensitizing materials for the inactivation of pathogens.
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2
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Zhang G, Wang M, Bobadova-Parvanova P, Fronczek FR, Smith KM, Vicente MGH. Investigations on the Synthesis, Reactivity, and Properties of Perfluoro-α-Benzo-Fused BOPHY Fluorophores. Chemistry 2022; 28:e202200421. [PMID: 35445459 DOI: 10.1002/chem.202200421] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2022] [Indexed: 11/06/2022]
Abstract
The synthesis and reactivity of 3,8-dibromo-dodecafluoro-benzo-fused BOPHY 2 are reported, via SN Ar with O-, N- S- and C-nucleophiles, and in Pd(0)-catalyzed cross-coupling reactions (Suzuki and Stille). The resulting perfluoro-BOPHY derivatives were investigated for their reactivity in the presence of various nucleophiles. BOPHY 3 displays reversible color change and fluorescence quenching in the presence of bases (Et3 N, DBU), whereas BOPHY 7 reacts preferentially at the α-pyrrolic positions, and BOPHY 8 undergoes regioselective fluorine substitution in the presence of thiols. The structural and electronic features of the fluorinated BOPHYs were studied by TD-DFT computations. In addition, their spectroscopic and cellular properties were investigated; BOPHY 10 shows the most red-shifted absorption/emission (λmax 659/699 nm) and 7 the highest fluorescence (Φf =0.95), while all compounds studied showed low cytotoxicity toward human HEp2 cells and were efficiently internalized.
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Affiliation(s)
- Guanyu Zhang
- Department of Chemistry, Louisiana State University, Baton Rouge, LA, 70803, USA
| | - Maodie Wang
- Department of Chemistry, Louisiana State University, Baton Rouge, LA, 70803, USA
| | - Petia Bobadova-Parvanova
- Department of Chemistry and Fermentation Sciences, Appalachian State University, Boone, NC 28608, USA
| | - Frank R Fronczek
- Department of Chemistry, Louisiana State University, Baton Rouge, LA, 70803, USA
| | - Kevin M Smith
- Department of Chemistry, Louisiana State University, Baton Rouge, LA, 70803, USA
| | - M Graça H Vicente
- Department of Chemistry, Louisiana State University, Baton Rouge, LA, 70803, USA
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3
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Drenichev MS, Oslovsky VE, Zenchenko AA, Danilova CV, Varga MA, Esipov RS, Lykoshin DD, Alexeev CS. Comparative Analysis of Enzymatic Transglycosylation Using E. coli Nucleoside Phosphorylases: A Synthetic Concept for the Preparation of Purine Modified 2′-Deoxyribonucleosides from Ribonucleosides. Int J Mol Sci 2022; 23:ijms23052795. [PMID: 35269937 PMCID: PMC8911250 DOI: 10.3390/ijms23052795] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2022] [Revised: 02/28/2022] [Accepted: 03/01/2022] [Indexed: 02/04/2023] Open
Abstract
A comparative analysis of the transglycosylation conditions catalyzed by E. coli nucleoside phosphorylases, leading to the formation of 2'-deoxynucleosides, was performed. We demonstrated that maximal yields of 2'-deoxynucleosides, especially modified, can be achieved under small excess of glycosyl-donor (7-methyl-2'-deoxyguanosine, thymidine) and a 4-fold lack of phosphate. A phosphate concentration less than equimolar one allows using only a slight excess of the carbohydrate residue donor nucleoside to increase the reaction's output. A three-step methodology was elaborated for the preparative synthesis of purine-modified 2'-deoxyribonucleosides, starting from the corresponding ribonucleosides.
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Affiliation(s)
- Mikhail S. Drenichev
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Vavilova Str. 32, 119991 Moscow, Russia; (M.S.D.); (V.E.O.); (A.A.Z.); (C.V.D.); (M.A.V.)
| | - Vladimir E. Oslovsky
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Vavilova Str. 32, 119991 Moscow, Russia; (M.S.D.); (V.E.O.); (A.A.Z.); (C.V.D.); (M.A.V.)
| | - Anastasia A. Zenchenko
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Vavilova Str. 32, 119991 Moscow, Russia; (M.S.D.); (V.E.O.); (A.A.Z.); (C.V.D.); (M.A.V.)
| | - Claudia V. Danilova
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Vavilova Str. 32, 119991 Moscow, Russia; (M.S.D.); (V.E.O.); (A.A.Z.); (C.V.D.); (M.A.V.)
| | - Mikhail A. Varga
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Vavilova Str. 32, 119991 Moscow, Russia; (M.S.D.); (V.E.O.); (A.A.Z.); (C.V.D.); (M.A.V.)
| | - Roman S. Esipov
- Laboratory of Biopharmaceutical Technologies, Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Ulitsa Miklukho-Maklaya, 16/10, GSP-7, 117997 Moscow, Russia; (R.S.E.); (D.D.L.)
| | - Dmitry D. Lykoshin
- Laboratory of Biopharmaceutical Technologies, Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Ulitsa Miklukho-Maklaya, 16/10, GSP-7, 117997 Moscow, Russia; (R.S.E.); (D.D.L.)
| | - Cyril S. Alexeev
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Vavilova Str. 32, 119991 Moscow, Russia; (M.S.D.); (V.E.O.); (A.A.Z.); (C.V.D.); (M.A.V.)
- Correspondence: or
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4
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Heredia DA, Durantini JE, Ferreyra DD, Reynoso E, Gonzalez Lopez EJ, Durantini AM, Milanesio ME, Durantini EN. Charge density distribution effect in pyrrolidine-fused chlorins on microbial uptake and antimicrobial photoinactivation of microbial pathogens. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2021; 225:112321. [PMID: 34695700 DOI: 10.1016/j.jphotobiol.2021.112321] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/03/2021] [Revised: 08/15/2021] [Accepted: 09/20/2021] [Indexed: 02/05/2023]
Abstract
Two novels structurally related pyrrolidine-fused chlorins were synthesized from 5,10,15,20-tetrakis(pentafluorophenyl)chlorin by nucleophilic aromatic substitution of the para-fluoro groups. The reaction with 2-dimethylaminoethanol produced TPCF16-NMe2 in 77% yield, while TPCF16-NBu was obtained using butylamine in 87% yield. The latter was extensively methylated to form TPCF16-N+Bu in 92% yield. The synthetic strategy was designed to compare the effect of charge density distribution on chlorin in the efficacy to induce photodynamic inactivation of pathogens. TPCF16-NMe2 has five tertiary amines that can acquire positive charges in aqueous medium by protonation. Furthermore, four of the cationic groups are located in amino groups linked to the chlorine macrocycle by an aliphatic structure of two carbon atoms, which gives it greater movement capacity. In contrast, TPCF16-N+Bu presents intrinsic positive charges on aromatic rings. Absorption and fluorescence emission properties were not affected by the peripheral substitution on the chlorin macrocycle. Both photosensitizers (PSs) were able to form singlet molecular oxygen and superoxide anion radical in solution. Uptake and photodynamic inactivation mediated by these chlorins were examined on Staphylococcus aureus and Escherichia coli. Both phototherapeutic agents produced efficient photoinactivation of S. aureus. However, only TPCF16-NMe2 was rapidly bound to E. coli cells and this chlorin was effective to photoinactivate both strains of bacteria using lower concentrations and shorter irradiation periods. Our outcomes reveal that the charge density distribution is a key factor to consider in the development of new PSs. Accordingly, this work stands out as a promising starting point for the design of new tetrapyrrolic macrocycles with application in PDI.
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Affiliation(s)
- Daniel A Heredia
- IDAS-CONICET, Departamento de Química, Facultad de Ciencias Exactas, Físico-Químicas y Naturales, Universidad Nacional de Río Cuarto, Ruta Nacional 36 Km 601, X5804BYA Río Cuarto, Córdoba, Argentina
| | - Javier E Durantini
- IITEMA-CONICET Departamento de Química, Facultad de Ciencias Exactas, Físico-Químicas y Naturales, Universidad Nacional de Río Cuarto, Ruta Nacional 36 Km 601, X5804BYA Río Cuarto, Córdoba, Argentina
| | - Darío D Ferreyra
- IDAS-CONICET, Departamento de Química, Facultad de Ciencias Exactas, Físico-Químicas y Naturales, Universidad Nacional de Río Cuarto, Ruta Nacional 36 Km 601, X5804BYA Río Cuarto, Córdoba, Argentina
| | - Eugenia Reynoso
- IDAS-CONICET, Departamento de Química, Facultad de Ciencias Exactas, Físico-Químicas y Naturales, Universidad Nacional de Río Cuarto, Ruta Nacional 36 Km 601, X5804BYA Río Cuarto, Córdoba, Argentina
| | - Edwin J Gonzalez Lopez
- IDAS-CONICET, Departamento de Química, Facultad de Ciencias Exactas, Físico-Químicas y Naturales, Universidad Nacional de Río Cuarto, Ruta Nacional 36 Km 601, X5804BYA Río Cuarto, Córdoba, Argentina
| | - Andrés M Durantini
- IDAS-CONICET, Departamento de Química, Facultad de Ciencias Exactas, Físico-Químicas y Naturales, Universidad Nacional de Río Cuarto, Ruta Nacional 36 Km 601, X5804BYA Río Cuarto, Córdoba, Argentina
| | - María E Milanesio
- IDAS-CONICET, Departamento de Química, Facultad de Ciencias Exactas, Físico-Químicas y Naturales, Universidad Nacional de Río Cuarto, Ruta Nacional 36 Km 601, X5804BYA Río Cuarto, Córdoba, Argentina
| | - Edgardo N Durantini
- IDAS-CONICET, Departamento de Química, Facultad de Ciencias Exactas, Físico-Químicas y Naturales, Universidad Nacional de Río Cuarto, Ruta Nacional 36 Km 601, X5804BYA Río Cuarto, Córdoba, Argentina.
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5
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Tanaka T, Ueto K, Osuka A. Development of Peripheral Functionalization Chemistry of meso-Free Corroles. Chemistry 2021; 27:15605-15615. [PMID: 34363279 DOI: 10.1002/chem.202102267] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2021] [Indexed: 11/06/2022]
Abstract
In contrast to the extensive development of meso functionalization of porphyrins, that of corroles has been only rarely explored until the development of practical synthetic methods of meso -free corroles in 2015. Ready availability of meso -free corroles opened up meso -functionalization chemistry of corroles, giving rise to successful synthesis of various meso-substituted corroles such as meso -halogen, meso -nitro, meso -amino, meso -oxo, and meso iminocorroles as well as meso-meso linked corrole dimers and corrole tapes. In some cases, 2NH corroles existed as stable or transient radical species. The impacts of meso -functionalization on the structures, electronic properties, optical characteristics, and aromaticity are highlighted in this Minireview.
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Affiliation(s)
- Takayuki Tanaka
- Kyoto University, Graduate School of Science, Department of Chemistry, JAPAN
| | - Kento Ueto
- Kyoto University, Graduate School of Science, Department of Chemistry, JAPAN
| | - Atsuhiro Osuka
- Kyoto University, Graduate School of Science, Department of Chemistry, Kita-shirakawa Oiwake-cho, Sakyo-ku, 606-8502, Kyoto, JAPAN
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6
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Hohlfeld BF, Gitter B, Kingsbury CJ, Flanagan KJ, Steen D, Wieland GD, Kulak N, Senge MO, Wiehe A. Dipyrrinato-Iridium(III) Complexes for Application in Photodynamic Therapy and Antimicrobial Photodynamic Inactivation. Chemistry 2021; 27:6440-6459. [PMID: 33236800 PMCID: PMC8248005 DOI: 10.1002/chem.202004776] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2020] [Revised: 11/24/2020] [Indexed: 12/24/2022]
Abstract
The generation of bio-targetable photosensitizers is of utmost importance to the emerging field of photodynamic therapy and antimicrobial (photo-)therapy. A synthetic strategy is presented in which chelating dipyrrin moieties are used to enhance the known photoactivity of iridium(III) metal complexes. Formed complexes can thus be functionalized in a facile manner with a range of targeting groups at their chemically active reaction sites. Dipyrrins with N- and O-substituents afforded (dipy)iridium(III) complexes via complexation with the respective Cp*-iridium(III) and ppy-iridium(III) precursors (dipy=dipyrrinato, Cp*=pentamethyl-η5 -cyclopentadienyl, ppy=2-phenylpyridyl). Similarly, electron-deficient [IrIII (dipy)(ppy)2 ] complexes could be used for post-functionalization, forming alkenyl, alkynyl and glyco-appended iridium(III) complexes. The phototoxic activity of these complexes has been assessed in cellular and bacterial assays with and without light; the [IrIII (Cl)(Cp*)(dipy)] complexes and the glyco-substituted iridium(III) complexes showing particular promise as photomedicine candidates. Representative crystal structures of the complexes are also presented.
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Affiliation(s)
- Benjamin F. Hohlfeld
- Institut für Chemie u. BiochemieFreie Universität BerlinTakustr. 314195BerlinGermany
- biolitec research GmbHOtto-Schott-Str. 1507745JenaGermany
| | | | - Christopher J. Kingsbury
- Medicinal Chemistry, Trinity Translational Medicine InstituteTrinity Centre for Health SciencesTrinity College Dublin, The University of DublinSt James's HospitalDublin8Ireland
| | - Keith J. Flanagan
- Medicinal Chemistry, Trinity Translational Medicine InstituteTrinity Centre for Health SciencesTrinity College Dublin, The University of DublinSt James's HospitalDublin8Ireland
| | - Dorika Steen
- biolitec research GmbHOtto-Schott-Str. 1507745JenaGermany
| | | | - Nora Kulak
- Institut für Chemie u. BiochemieFreie Universität BerlinTakustr. 314195BerlinGermany
- Institut für ChemieOtto-von-Guericke-Universität MagdeburgUniversitätsplatz 239106MagdeburgGermany
| | - Mathias O. Senge
- Medicinal Chemistry, Trinity Translational Medicine InstituteTrinity Centre for Health SciencesTrinity College Dublin, The University of DublinSt James's HospitalDublin8Ireland
- Institute for Advanced Study (TUM-IAS)Technical University of MunichLichtenbergstrasse 2a85748GarchingGermany
| | - Arno Wiehe
- Institut für Chemie u. BiochemieFreie Universität BerlinTakustr. 314195BerlinGermany
- biolitec research GmbHOtto-Schott-Str. 1507745JenaGermany
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7
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Thuita D, Guberman‐Pfeffer MJ, Brückner C. S
N
Ar Reaction Toward the Synthesis of Fluorinated Quinolino[2,3,4‐at]porphyrins. European J Org Chem 2020. [DOI: 10.1002/ejoc.202001347] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Damaris Thuita
- Department of Chemistry University of Connecticut, Unit 3060 Storrs CT 06268-3060 U.S.A
| | - Matthew J. Guberman‐Pfeffer
- Department of Chemistry University of Connecticut, Unit 3060 Storrs CT 06268-3060 U.S.A
- Current address: Department of Molecular Biophysics and Biochemistry and the Microbial Science Institute Yale University New Haven CT 06520 U.S.A
| | - Christian Brückner
- Department of Chemistry University of Connecticut, Unit 3060 Storrs CT 06268-3060 U.S.A
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8
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Zhang Y, Liu JQ, Wang XS. Copper(I)-catalyzed synthesis of isoindolo[1,2-b]quinazoline derivatives via an α-arylation under Pd and ligand free conditions. Tetrahedron Lett 2020. [DOI: 10.1016/j.tetlet.2020.152508] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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9
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Scanone AC, Gsponer NS, Alvarez MG, Heredia DA, Durantini AM, Durantini EN. Magnetic Nanoplatforms for in Situ Modification of Macromolecules: Synthesis, Characterization, and Photoinactivating Power of Cationic Nanoiman-Porphyrin Conjugates. ACS APPLIED BIO MATERIALS 2020; 3:5930-5940. [PMID: 35021821 DOI: 10.1021/acsabm.0c00625] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
A nanoplatform concept was developed to synthesize accessible photoactive magnetic nanoparticles (MNPs) of Fe3O4 coated with silica. This approach was based on the covalent binding of 5,10,15,20-tetrakis(pentafluorophenyl)porphyrin (TPPF20) to aminopropyl-grafted MNPs by nucleophilic aromatic substitution reaction (SNAr) to obtain conjugate MNP-P1. After in situ modification, the remaining pentafluorophenyl groups of TPPF20 attached to MNPs were substituted by dimethylaminoethoxy groups to form MNP-P2. The basic amine group of these conjugates can be protonated in aqueous media. In addition, MNP-P1 and MNP-P2 were intrinsically charged to produce cationic conjugates MNP+-P1 and MNP+-P2+ by methylation. All of them were easily purified by magnetic decantation in high yields. The average size of the MNPs was ∼15 nm, and the main difference between these conjugates was the greater coating with positive charges of MNP+-P2+, as shown by the zeta potential values. Absorption spectra exhibited the Soret and Q bands characteristic of TPPF20 linked to MNPs. Furthermore, these conjugates showed red fluorescence emission of porphyrin with quantum yields of 0.011-0.036. The photodynamic effect sensitized by the conjugates indicated the efficient formation of singlet molecular oxygen in different media, reaching quantum yield values of 0.17-0.34 in N,N-dimethylformamide. The photodynamic activity of the conjugates was evaluated to inactivate the Gram-positive bacteria Staphylococcus aureus, the Gram-negative bacteria Escherichia coli, and the yeast Candida albicans. The modified cationic MNP+-P2+ was the most effective conjugate for photodynamic inactivation (PDI) of microorganisms. Binding of this conjugate to bacteria and photoinactivation capability was checked by means of fluorescence microscopy. Also, sustainable use by recycling was determined after three PDI treatments. Therefore, this methodology is a suitable scaffold for the in situ modification of conjugates, and in particular, MNP+-P2+ represents a useful photodynamic active material to eradicate microorganisms.
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Affiliation(s)
- Ana C Scanone
- IDAS-CONICET, Departamento de Química, Facultad de Ciencias Exactas, Físico-Químicas y Naturales, Universidad Nacional de Río Cuarto, Ruta Nacional 36 Km 601, X5804BYA Río Cuarto, Córdoba, Argentina
| | - Natalia S Gsponer
- IDAS-CONICET, Departamento de Química, Facultad de Ciencias Exactas, Físico-Químicas y Naturales, Universidad Nacional de Río Cuarto, Ruta Nacional 36 Km 601, X5804BYA Río Cuarto, Córdoba, Argentina
| | - María G Alvarez
- IDAS-CONICET, Departamento de Química, Facultad de Ciencias Exactas, Físico-Químicas y Naturales, Universidad Nacional de Río Cuarto, Ruta Nacional 36 Km 601, X5804BYA Río Cuarto, Córdoba, Argentina
| | - Daniel A Heredia
- IDAS-CONICET, Departamento de Química, Facultad de Ciencias Exactas, Físico-Químicas y Naturales, Universidad Nacional de Río Cuarto, Ruta Nacional 36 Km 601, X5804BYA Río Cuarto, Córdoba, Argentina
| | - Andrés M Durantini
- IDAS-CONICET, Departamento de Química, Facultad de Ciencias Exactas, Físico-Químicas y Naturales, Universidad Nacional de Río Cuarto, Ruta Nacional 36 Km 601, X5804BYA Río Cuarto, Córdoba, Argentina
| | - Edgardo N Durantini
- IDAS-CONICET, Departamento de Química, Facultad de Ciencias Exactas, Físico-Químicas y Naturales, Universidad Nacional de Río Cuarto, Ruta Nacional 36 Km 601, X5804BYA Río Cuarto, Córdoba, Argentina
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10
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Brückner C, Atoyebi AO, Girouard D, Lau KSF, Akhigbe J, Samankumara L, Damunupola D, Khalil GE, Gouterman M, Krause JA, Zeller M. Stepwise Preparation of
meso
‐Tetraphenyl‐ and
meso
‐Tetrakis(4‐trifluoromethylphenyl)bacteriodilactones and their Zinc(II) and Palladium(II) Complexes. European J Org Chem 2020. [DOI: 10.1002/ejoc.201901727] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Christian Brückner
- Department of Chemistry University of Connecticut 06268‐3060 Storrs CT USA
| | - Adewole O. Atoyebi
- Department of Chemistry University of Connecticut 06268‐3060 Storrs CT USA
| | - Derek Girouard
- Department of Chemistry University of Connecticut 06268‐3060 Storrs CT USA
| | - Kimberly S. F. Lau
- Department of Chemistry University of Connecticut 06268‐3060 Storrs CT USA
- Department of Chemistry University of Washington 98195 Seattle WA USA
| | - Joshua Akhigbe
- Department of Chemistry University of Connecticut 06268‐3060 Storrs CT USA
| | - Lalith Samankumara
- Department of Chemistry University of Connecticut 06268‐3060 Storrs CT USA
| | - Dinusha Damunupola
- Department of Chemistry University of Connecticut 06268‐3060 Storrs CT USA
| | - Gamal E. Khalil
- Department of Chemistry University of Washington 98195 Seattle WA USA
| | - Martin Gouterman
- Department of Chemistry University of Washington 98195 Seattle WA USA
| | - Jeanette A. Krause
- Department of Chemistry University of Cincinnati 45221‐0172 Cincinnati OH USA
| | - Matthias Zeller
- Department of Chemistry Purdue University 47907‐2084 West Lafayette IN USA
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11
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Orbelli Biroli A, Tessore F, Di Carlo G, Pizzotti M, Benazzi E, Gentile F, Berardi S, Bignozzi CA, Argazzi R, Natali M, Sartorel A, Caramori S. Fluorinated Zn II Porphyrins for Dye-Sensitized Aqueous Photoelectrosynthetic Cells. ACS APPLIED MATERIALS & INTERFACES 2019; 11:32895-32908. [PMID: 31429275 DOI: 10.1021/acsami.9b08042] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Three perfluorinated ZnII porphyrins were evaluated as n-type sensitizers in photoelectrosynthetic cells for HBr and water splitting. All the dyes are featured by the presence of pentafluorophenyl electron-withdrawing groups to increase the ground-state oxidation potential and differ for the nature and position of the π-conjugate linker between the core and anchoring group tasked to bind the metal oxide, in order to assess the best way of coupling with the semiconductor. A phenyl-triazole moiety was used to link the carboxylic anchoring group onto the meso position, while an ethynyl-phenyl linker was chosen to bridge carboxylic and cyanoacrylic groups onto the β-pyrrolic position. A combination of electrochemical, computational, and spectroscopic investigations confirmed the strong electron-withdrawing effect of the perfluorinated porphyrin core, which assures all the investigated dyes of the high oxidation potential required to the coupling with water oxidation catalysts (WOC). Such an electron-poor core, however, affects the charge separation character of the dyes, as demonstrated by the spatial distribution of the excited states, leading to a nonquantitative charge injection, although tilting of the molecules on the semiconductor surface could bring the porphyrin ring closer to the semiconductor, offering additional charge-transfer pathways. Indeed, all the dyes demonstrated successful in the splitting of both aqueous HBr and water, with the best results found for the SnO2/TiO2 photoanode sensitized with the β-substituted porphyrin equipped with a cyanoacrylic terminal group, achieving 0.4 and 0.1 mA/cm2 photoanodic currents in HBr and water under visible light, respectively. The faradaic yield for oxygen evolution in the presence of an IrIV catalyst was over 95%, and the photoanode operation was stable for more than 1000 s. Thus, the perfluorinated porphyrins with a cyanoacrylic anchoring group at the β-position should be considered for further development to improve the charge-transfer character.
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Affiliation(s)
- Alessio Orbelli Biroli
- Institute of Molecular Science and Technologies of the National Research Council (CNR-ISTM), SmartMatLab Centre , via Golgi 19 , 20133 Milano , Italy
| | - Francesca Tessore
- Department of Chemistry , University of Milano, INSTM RU , via Golgi 19 , 20133 Milano , Italy
| | - Gabriele Di Carlo
- Department of Chemistry , University of Milano, INSTM RU , via Golgi 19 , 20133 Milano , Italy
| | - Maddalena Pizzotti
- Department of Chemistry , University of Milano, INSTM RU , via Golgi 19 , 20133 Milano , Italy
| | | | | | | | | | | | | | - Andrea Sartorel
- Department of Chemical Sciences , University of Padova , Via Marzolo 1 , 35131 Padova , Italy
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12
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Heredia DA, Martínez SR, Durantini AM, Pérez ME, Mangione MI, Durantini JE, Gervaldo MA, Otero LA, Durantini EN. Antimicrobial Photodynamic Polymeric Films Bearing Biscarbazol Triphenylamine End-Capped Dendrimeric Zn(II) Porphyrin. ACS APPLIED MATERIALS & INTERFACES 2019; 11:27574-27587. [PMID: 31310503 DOI: 10.1021/acsami.9b09119] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
A novel biscarbazol triphenylamine end-capped dendrimeric zinc(II) porphyrin (DP 5) was synthesized by click chemistry. This compound is a cruciform dendrimer that bears a nucleus of zinc(II) tetrapyrrolic macrocycle substituted at the meso positions by four identical substituents. These are formed by a tetrafluorophenyl group that possesses a triazole unit in the para position. This nitrogenous heterocyclic is connected to a 4,4'-di(N-carbazolyl)triphenylamine group by means of a phenylenevinylene bridge, which allows the conjugation between the nucleus and this external electropolymerizable carbazoyl group. In this structure, dendrimeric arms act as light-harvesting antennas, increasing the absorption of blue light, and as electroactive moieties. The electrochemical oxidation of the carbazole groups contained in the terminal arms of the DP 5 was used to obtain novel, stable, and reproducible fully π-conjugated photoactive polymeric films (FDP 5). First, the spectroscopic characteristics and photodynamic properties of DP 5 were compared with its constitutional components derived of porphyrin P 6 and carbazole D 7 moieties in solution. The fluorescence emissions of the dendrimeric units in DP 5 were more strongly quenched by the tetrapyrrolic macrocycle, indicating photoinduced energy transfer. In addition, FDP 5 film showed the Soret and Q absorption bands and red fluorescence emission of the corresponding zinc(II) porphyrin. Also, FDP 5 film was highly stable to photobleaching, and it was able to produce singlet molecular oxygen in both N,N-dimethylformamide (DMF) and water. Therefore, the porphyrin units embedded in the polymeric matrix of FDP 5 film mainly retain the photochemical properties. Photodynamic inactivation mediated by FDP 5 film was investigated in Staphylococcus aureus and Escherichia coli. When a cell suspension was deposited on the surface, complete eradication of S. aureus and a 99% reduction in E. coli survival were found after 15 and 30 min of irradiation, respectively. Also, FDP 5 film was highly effective to eliminate individual bacteria attached to the surface. In addition, photodynamic inactivation (PDI) sensitized by FDP 5 film produced >99.99% bacterial killing in biofilms formed on the surface after 60 min irradiation. The results indicate that FDP 5 film represents an interesting and versatile photodynamic active material to eradicate bacteria as planktonic cells, individual attached microbes, or biofilms.
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Affiliation(s)
- Daniel A Heredia
- IDAS-CONICET, Departamento de Química, Facultad de Ciencias Exactas, Físico-Químicas y Naturales , Universidad Nacional de Río Cuarto , Ruta Nacional 36 Km 601 , X5804BYA Río Cuarto, Córdoba , Argentina
| | - Sol R Martínez
- IDAS-CONICET, Departamento de Química, Facultad de Ciencias Exactas, Físico-Químicas y Naturales , Universidad Nacional de Río Cuarto , Ruta Nacional 36 Km 601 , X5804BYA Río Cuarto, Córdoba , Argentina
| | - Andrés M Durantini
- IDAS-CONICET, Departamento de Química, Facultad de Ciencias Exactas, Físico-Químicas y Naturales , Universidad Nacional de Río Cuarto , Ruta Nacional 36 Km 601 , X5804BYA Río Cuarto, Córdoba , Argentina
| | - M Eugenia Pérez
- IDAS-CONICET, Departamento de Química, Facultad de Ciencias Exactas, Físico-Químicas y Naturales , Universidad Nacional de Río Cuarto , Ruta Nacional 36 Km 601 , X5804BYA Río Cuarto, Córdoba , Argentina
| | - María I Mangione
- IQUIR-CONICET, Facultad de Ciencias Bioquímicas y Farmacéuticas , Universidad Nacional de Rosario , Suipacha 531 , S2002LRK Rosario , Argentina
| | - Javier E Durantini
- IITEMA-CONICET, Departamento de Química, Facultad de Ciencias Exactas, Físico-Químicas y Naturales , Universidad Nacional de Río Cuarto , Ruta Nacional 36 Km 601 , X5804BYA Río Cuarto, Córdoba , Argentina
| | - Miguel A Gervaldo
- IITEMA-CONICET, Departamento de Química, Facultad de Ciencias Exactas, Físico-Químicas y Naturales , Universidad Nacional de Río Cuarto , Ruta Nacional 36 Km 601 , X5804BYA Río Cuarto, Córdoba , Argentina
| | - Luis A Otero
- IITEMA-CONICET, Departamento de Química, Facultad de Ciencias Exactas, Físico-Químicas y Naturales , Universidad Nacional de Río Cuarto , Ruta Nacional 36 Km 601 , X5804BYA Río Cuarto, Córdoba , Argentina
| | - Edgardo N Durantini
- IDAS-CONICET, Departamento de Química, Facultad de Ciencias Exactas, Físico-Químicas y Naturales , Universidad Nacional de Río Cuarto , Ruta Nacional 36 Km 601 , X5804BYA Río Cuarto, Córdoba , Argentina
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13
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Hohlfeld BF, Flanagan KJ, Kulak N, Senge MO, Christmann M, Wiehe A. Synthesis of Porphyrinoids, BODIPYs, and (Dipyrrinato)ruthenium(II) Complexes from Prefunctionalized Dipyrromethanes. European J Org Chem 2019. [DOI: 10.1002/ejoc.201900530] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Benjamin F. Hohlfeld
- Institut für Chemie und Biochemie; Freie Universität Berlin; Takustr. 3 14195 Berlin Germany
- Institut für Chemie und Biochemie; Freie Universität Berlin; Fabeckstr. 34/36 14195 Berlin Germany
- biolitec research GmbH; Otto-Schott-Str. 15 07745 Jena Germany
| | - Keith J. Flanagan
- Medicinal Chemistry, Trinity Translational Medicine Institute; Trinity Centre for Health Sciences, Trinity College Dublin; The University of Dublin, St James's Hospital; 8 Dublin Ireland
| | - Nora Kulak
- Institut für Chemie und Biochemie; Freie Universität Berlin; Fabeckstr. 34/36 14195 Berlin Germany
| | - Mathias O. Senge
- Medicinal Chemistry, Trinity Translational Medicine Institute; Trinity Centre for Health Sciences, Trinity College Dublin; The University of Dublin, St James's Hospital; 8 Dublin Ireland
| | - Mathias Christmann
- Institut für Chemie und Biochemie; Freie Universität Berlin; Takustr. 3 14195 Berlin Germany
| | - Arno Wiehe
- Institut für Chemie und Biochemie; Freie Universität Berlin; Takustr. 3 14195 Berlin Germany
- biolitec research GmbH; Otto-Schott-Str. 15 07745 Jena Germany
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14
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Soll M, Goswami TK, Chen QC, Saltsman I, Teo RD, Shahgholi M, Lim P, Di Bilio AJ, Cohen S, Termini J, Gray HB, Gross Z. Cell-Penetrating Protein/Corrole Nanoparticles. Sci Rep 2019; 9:2294. [PMID: 30783138 PMCID: PMC6381154 DOI: 10.1038/s41598-019-38592-w] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2018] [Accepted: 12/18/2018] [Indexed: 01/03/2023] Open
Abstract
Recent work has highlighted the potential of metallocorroles as versatile platforms for the development of drugs and imaging agents, since the bioavailability, physicochemical properties and therapeutic activity can be dramatically altered by metal ion substitution and/or functional group replacement. Significant advances in cancer treatment and imaging have been reported based on work with a water-soluble bis-sulfonated gallium corrole in both cellular and rodent-based models. We now show that cytotoxicities increase in the order Ga < Fe < Al < Mn < Sb < Au for bis-sulfonated corroles; and, importantly, that they correlate with metallocorrole affinities for very low density lipoprotein (VLDL), the main carrier of lipophilic drugs. As chemotherapeutic potential is predicted to be enhanced by increased lipophilicity, we have developed a novel method for the preparation of cell-penetrating lipophilic metallocorrole/serum-protein nanoparticles (NPs). Cryo-TEM revealed an average core metallocorrole particle size of 32 nm, with protein tendrils extending from the core (conjugate size is ~100 nm). Optical imaging of DU-145 prostate cancer cells treated with corrole NPs (≤100 nM) revealed fast cellular uptake, very slow release, and distribution into the endoplasmic reticulum (ER) and lysosomes. The physical properties of corrole NPs prepared in combination with transferrin and albumin were alike, but the former were internalized to a greater extent by the transferrin-receptor-rich DU-145 cells. Our method of preparation of corrole/protein NPs may be generalizable to many bioactive hydrophobic molecules to enhance their bioavailability and target affinity.
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Affiliation(s)
- Matan Soll
- Schulich Faculty of Chemistry, Technion - Israel Institute of Technology, Haifa, 32000, Israel
| | - Tridib K Goswami
- Schulich Faculty of Chemistry, Technion - Israel Institute of Technology, Haifa, 32000, Israel
| | - Qiu-Cheng Chen
- Schulich Faculty of Chemistry, Technion - Israel Institute of Technology, Haifa, 32000, Israel
| | - Irena Saltsman
- Schulich Faculty of Chemistry, Technion - Israel Institute of Technology, Haifa, 32000, Israel
| | - Ruijie D Teo
- Beckman Institute, California Institute of Technology, Pasadena, CA, 91125, USA
| | - Mona Shahgholi
- Beckman Institute, California Institute of Technology, Pasadena, CA, 91125, USA
| | - Punnajit Lim
- Department of Molecular Medicine, Beckman Research Institute of the City of Hope, Duarte, CA, 91010, USA
| | - Angel J Di Bilio
- Beckman Institute, California Institute of Technology, Pasadena, CA, 91125, USA
| | - Sarah Cohen
- Schulich Faculty of Chemistry, Technion - Israel Institute of Technology, Haifa, 32000, Israel
| | - John Termini
- Department of Molecular Medicine, Beckman Research Institute of the City of Hope, Duarte, CA, 91010, USA.
| | - Harry B Gray
- Beckman Institute, California Institute of Technology, Pasadena, CA, 91125, USA.
| | - Zeev Gross
- Schulich Faculty of Chemistry, Technion - Israel Institute of Technology, Haifa, 32000, Israel.
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15
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Gruber N, Díaz JE, Orelli LR. Synthesis of dihydroquinazolines from 2-aminobenzylamine: N 3 -aryl derivatives with electron-withdrawing groups. Beilstein J Org Chem 2018; 14:2510-2519. [PMID: 30344774 PMCID: PMC6178284 DOI: 10.3762/bjoc.14.227] [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: 06/24/2018] [Accepted: 08/31/2018] [Indexed: 11/23/2022] Open
Abstract
The sequential N-functionalization of 2-aminobenzylamine (2-ABA) followed by cyclodehydration allowed for a straightforward and efficient synthesis of 3,4-dihydroquinazolines with N-aryl substituents bearing electron-withdrawing groups. The sequence involves an initial SNAr displacement, N-acylation and MW-assisted ring closure. Remarkably, the uncatalyzed N-arylation of 2-ABA led to the monosubstitution product using equimolar amounts of both reagents. The individual steps were optimized achieving good to excellent overall yields of the desired heterocycles, avoiding additional protection and deprotection steps. A mechanistic interpretation for the cyclodehydration reaction promoted by trimethylsilyl polyphosphate (PPSE) is also proposed on the basis of literature data and our experimental observations.
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Affiliation(s)
- Nadia Gruber
- Universidad de Buenos Aires, CONICET, Departamento de Química Orgánica, Facultad de Farmacia y Bioquímica, Junín 956, (1113) Buenos Aires, Argentina
| | - Jimena E Díaz
- Universidad de Buenos Aires, CONICET, Departamento de Química Orgánica, Facultad de Farmacia y Bioquímica, Junín 956, (1113) Buenos Aires, Argentina
| | - Liliana R Orelli
- Universidad de Buenos Aires, CONICET, Departamento de Química Orgánica, Facultad de Farmacia y Bioquímica, Junín 956, (1113) Buenos Aires, Argentina
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16
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Scanone AC, Gsponer NS, Alvarez MG, Durantini EN. Porphyrins containing basic aliphatic amino groups as potential broad-spectrum antimicrobial agents. Photodiagnosis Photodyn Ther 2018; 24:220-227. [PMID: 30278279 DOI: 10.1016/j.pdpdt.2018.09.017] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2018] [Revised: 09/28/2018] [Accepted: 09/28/2018] [Indexed: 10/28/2022]
Abstract
New porphyrin derivatives bearing basic aliphatic amino groups were synthesized from the condensation of meso-4-[(3-N,N-dimethylaminopropoxy)phenyl]dipyrromethane, pentafluorobenzaldehyde and 4-(3-N,N-dimethylaminopropoxy)benzaldehyde. The reaction was catalyzed by trifluoroacetic acid in acetonitrile. This approach was used to obtain porphyrins with different patterns of substitution, of which three of them were isolated: 5,15-di(4-pentafluorophenyl)-10,20-di[4-(3-N,N-dimethylaminopropoxy)phenyl]porphyrin (F10APP), 5-(4-pentafluorophenyl)-10,15,20-tris[4-(3-N,N-dimethylaminopropoxy)phenyl]porphyrin (F5APP) and 5,10,15,20-tetrakis[4-(3-N,N-dimethylaminopropoxy)phenyl]porphyrin (TAPP). The UV-vis spectroscopic characterizations and the photodynamic effect of these compounds were compared in N,N-dimethylformamide. These porphyrins showed red fluorescence emission with quantum yields of 0.09-0.15. Moreover, they sensitized the production of singlet molecular oxygen, reaching quantum yields values of 0.33-0.53. Photodynamic inactivation was studied in two bacteria, Staphylococcus aureus and Escherichia coli, and a yeast Candida albicans. High amount of cell-bound porphyrin was obtained at short times (<2 min) of incubation. After 15 min irradiation, a 7 log reduction of S. aureus was found for cells treated with 1 μM F5APP. Similar photokilling was obtained in E. coli, but using 7.5 μM F5APP and 30 min irradiation. Under these conditions, a decrease of 5 log was observed in C. albicans cells. An increase in cell survival was observed by addition of sodium azide, whereas a slight protective effect was found in the presence of D-mannitol. Moreover, the photoinactivation mediated by these porphyrins was higher in D2O than in water. Thus, these porphyrins induced the photodynamic activity mainly through the intermediacy of O2(1Δg). In particular, F5APP was a highly effective photosensitizer with application as a broad-spectrum antimicrobial. This porphyrin contains three basic aliphatic amino groups that may be protonated at physiological pH. In addition, it is substituted by a lipophilic pentafluorophenyl group, which confers an amphiphilic character to the tetrapyrrolic macrocycle. This effect can increase the interaction with the cell envelopment, improving the photocytotoxic activity against the microorganisms.
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Affiliation(s)
- Ana C Scanone
- Departamento de Química, Facultad de Ciencias Exactas, Físico-Químicas y Naturales, Universidad Nacional de Río Cuarto, Ruta Nacional 36 Km 601, X5804BYA, Río Cuarto, Córdoba, Argentina
| | - Natalia S Gsponer
- Departamento de Química, Facultad de Ciencias Exactas, Físico-Químicas y Naturales, Universidad Nacional de Río Cuarto, Ruta Nacional 36 Km 601, X5804BYA, Río Cuarto, Córdoba, Argentina
| | - M Gabriela Alvarez
- Departamento de Química, Facultad de Ciencias Exactas, Físico-Químicas y Naturales, Universidad Nacional de Río Cuarto, Ruta Nacional 36 Km 601, X5804BYA, Río Cuarto, Córdoba, Argentina
| | - Edgardo N Durantini
- Departamento de Química, Facultad de Ciencias Exactas, Físico-Químicas y Naturales, Universidad Nacional de Río Cuarto, Ruta Nacional 36 Km 601, X5804BYA, Río Cuarto, Córdoba, Argentina.
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17
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Luciano MP, Akhigbe J, Ding J, Thuita D, Hamchand R, Zeller M, Brückner C. An Alternate Route of Transforming meso-Tetraarylporphyrins to Porpholactams, and Their Conversion to Amine-Functionalized Imidazoloporphyrins. J Org Chem 2018; 83:9619-9630. [DOI: 10.1021/acs.joc.8b00790] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Affiliation(s)
- Michael P. Luciano
- Department of Chemistry, University of Connecticut, Storrs, Connecticut 06269-3060, United States
| | - Joshua Akhigbe
- Department of Chemistry, University of Connecticut, Storrs, Connecticut 06269-3060, United States
| | - Jiaming Ding
- Department of Chemistry, University of Connecticut, Storrs, Connecticut 06269-3060, United States
| | - Damaris Thuita
- Department of Chemistry, University of Connecticut, Storrs, Connecticut 06269-3060, United States
| | - Randy Hamchand
- Department of Chemistry, University of Connecticut, Storrs, Connecticut 06269-3060, United States
| | - Matthias Zeller
- Department of Chemistry, Purdue University, 560 Oval Drive, West Lafayette, Indiana 47907-2084, United States
| | - Christian Brückner
- Department of Chemistry, University of Connecticut, Storrs, Connecticut 06269-3060, United States
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18
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Heredia DA, Durantini AM, Sarotti AM, Gsponer NS, Ferreyra DD, Bertolotti SG, Milanesio ME, Durantini EN. Proton-Dependent Switching of a Novel Amino Chlorin Derivative as a Fluorescent Probe and Photosensitizer for Acidic Media. Chemistry 2018; 24:5950-5961. [DOI: 10.1002/chem.201800060] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2018] [Indexed: 12/19/2022]
Affiliation(s)
- Daniel A. Heredia
- Departamento de Química; Facultad de Ciencias Exactas; Físico-Químicas y Naturales; Universidad Nacional de Río Cuarto; Ruta Nacional 36 Km 601 X5804BYA Río Cuarto Córdoba Argentina), Fax
| | - Andrés M. Durantini
- Departamento de Química; Facultad de Ciencias Exactas; Físico-Químicas y Naturales; Universidad Nacional de Río Cuarto; Ruta Nacional 36 Km 601 X5804BYA Río Cuarto Córdoba Argentina), Fax
| | - Ariel M. Sarotti
- Instituto de Química Rosario (CONICET); Facultad de Ciencias Bioquímicas y Farmacéuticas; Universidad Nacional de Rosario; Suipacha 531 2000 Rosario Santa Fe Argentina
| | - Natalia S. Gsponer
- Departamento de Química; Facultad de Ciencias Exactas; Físico-Químicas y Naturales; Universidad Nacional de Río Cuarto; Ruta Nacional 36 Km 601 X5804BYA Río Cuarto Córdoba Argentina), Fax
| | - Darío D. Ferreyra
- Departamento de Química; Facultad de Ciencias Exactas; Físico-Químicas y Naturales; Universidad Nacional de Río Cuarto; Ruta Nacional 36 Km 601 X5804BYA Río Cuarto Córdoba Argentina), Fax
| | - Sonia G. Bertolotti
- Departamento de Química; Facultad de Ciencias Exactas; Físico-Químicas y Naturales; Universidad Nacional de Río Cuarto; Ruta Nacional 36 Km 601 X5804BYA Río Cuarto Córdoba Argentina), Fax
| | - María E. Milanesio
- Departamento de Química; Facultad de Ciencias Exactas; Físico-Químicas y Naturales; Universidad Nacional de Río Cuarto; Ruta Nacional 36 Km 601 X5804BYA Río Cuarto Córdoba Argentina), Fax
| | - Edgardo N. Durantini
- Departamento de Química; Facultad de Ciencias Exactas; Físico-Químicas y Naturales; Universidad Nacional de Río Cuarto; Ruta Nacional 36 Km 601 X5804BYA Río Cuarto Córdoba Argentina), Fax
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19
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Cakir Yigit N, Hizal G, Tunca U. A powerful tool for preparing peripherally post-functionalized multiarm star block copolymer. Polym Bull (Berl) 2017. [DOI: 10.1007/s00289-017-2218-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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20
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Boufflet P, Casey A, Xia Y, Stavrinou PN, Heeney M. Pentafluorobenzene end-group as a versatile handle for para fluoro "click" functionalization of polythiophenes. Chem Sci 2017; 8:2215-2225. [PMID: 28507677 PMCID: PMC5408564 DOI: 10.1039/c6sc04427a] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2016] [Accepted: 12/06/2016] [Indexed: 11/21/2022] Open
Abstract
A convenient method of introducing pentafluorobenzene (PFB) as a single end-group in polythiophene derivatives is reported via in situ quenching of the polymerization. We demonstrate that the PFB-group is a particularly useful end-group due to its ability to undergo fast nucleophilic aromatic substitutions. Using this molecular handle, we are able to quantitatively tether a variety of common nucleophiles to the polythiophene backbone. The mild conditions required for the reaction allows sensitive functional moieties, such as biotin or a cross-linkable trimethoxysilane, to be introduced as end-groups. The high yield enabled the formation of a diblock rod-coil polymer from equimolar reactants under transition metal-free conditions at room temperature. We further demonstrate that water soluble polythiophenes end-capped with PFB can be prepared via the hydrolysis of an ester precursor, and that such polymers are amenable to functionalization under aqueous conditions.
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Affiliation(s)
- Pierre Boufflet
- Dept. Chemistry and Centre for Plastic Electronics , Imperial College London , Exhibition Rd , London , SW7 2AZ , UK .
| | - Abby Casey
- Dept. Chemistry and Centre for Plastic Electronics , Imperial College London , Exhibition Rd , London , SW7 2AZ , UK .
| | - Yiren Xia
- Dept. Physics and Centre for Plastic Electronics , Imperial College London , Exhibition Rd , London , SW7 2AZ , UK
- Dept. of Engineering Science , University of Oxford , Parks Road , Oxford OX1 3PJ , UK
| | - Paul N Stavrinou
- Dept. of Engineering Science , University of Oxford , Parks Road , Oxford OX1 3PJ , UK
| | - Martin Heeney
- Dept. Chemistry and Centre for Plastic Electronics , Imperial College London , Exhibition Rd , London , SW7 2AZ , UK .
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21
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Staegemann MH, Gitter B, Dernedde J, Kuehne C, Haag R, Wiehe A. Mannose-Functionalized Hyperbranched Polyglycerol Loaded with Zinc Porphyrin: Investigation of the Multivalency Effect in Antibacterial Photodynamic Therapy. Chemistry 2017; 23:3918-3930. [PMID: 28029199 DOI: 10.1002/chem.201605236] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2016] [Indexed: 02/03/2023]
Abstract
The antibacterial photodynamic activity of hyperbranched polyglycerol (hPG) loaded with zinc porphyrin photosensitizers and mannose units was investigated. hPG, with a MW of 19.5 kDa, was functionalized with about 15 molecules of the photosensitizer {5,10,15-tris(3-hydroxyphenyl)-20-[4-(prop-2-yn-1-ylamino)tetrafluorophenyl]porphyrinato}-zinc(II) by using copper(I)-catalyzed 1,3-dipolar cycloaddition (CuAAC). These nanoparticle conjugates were functionalized systematically with increasing loadings of mannose in the range of approximately 20 to 110 groups. With higher mannose loadings (ca. 58-110 groups) the water-insoluble zinc porphyrin photosensitizer could thus be transferred into a water-soluble form. Targeting of the conjugates was proven in binding studies to the mannose-specific lectin concanavalin A (Con A) by using surface plasmon resonance (SPR). The antibacterial phototoxicity of the conjugates on Staphylococcus aureus (as a typical Gram-positive germ) was investigated in phosphate-buffered saline (PBS). It was shown that conjugates with approximately 70-110 mannose units exhibit significant antibacterial activity, whereas conjugates with approximately 20-60 units did not induce bacterial killing at all. These results give an insight into the multivalency effect in combination with photodynamic therapy (PDT). On addition of serum to the bacterial cultures, a quenching of this antibacterial phototoxicity was observed. In fluorescence studies with the conjugates in the presence of increasing bovine serum albumin (BSA) concentrations, protein-conjugate associations could be identified as a plausible cause for this quenching.
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Affiliation(s)
- Michael H Staegemann
- Institut für Chemie und Biochemie, Freie Universität Berlin, Takustr. 3, 14195, Berlin, Germany
| | - Burkhard Gitter
- Biolitec research GmbH, Otto-Schott-Str. 15, 07745, Jena, Germany
| | - Jens Dernedde
- Charité-Universitätsmedizin Berlin, Institut für Laboratoriumsmedizin, Klinische Chemie und Pathobiochemie, Campus Virchow Klinikum, Augustenburger Platz 1, 13353, Berlin, Germany
| | - Christian Kuehne
- Charité-Universitätsmedizin Berlin, Institut für Laboratoriumsmedizin, Klinische Chemie und Pathobiochemie, Campus Virchow Klinikum, Augustenburger Platz 1, 13353, Berlin, Germany
| | - Rainer Haag
- Institut für Chemie und Biochemie, Freie Universität Berlin, Takustr. 3, 14195, Berlin, Germany
| | - Arno Wiehe
- Institut für Chemie und Biochemie, Freie Universität Berlin, Takustr. 3, 14195, Berlin, Germany.,Biolitec research GmbH, Otto-Schott-Str. 15, 07745, Jena, Germany
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22
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Brenner W, Ronson TK, Nitschke JR. Separation and Selective Formation of Fullerene Adducts within an MII8L6 Cage. J Am Chem Soc 2016; 139:75-78. [DOI: 10.1021/jacs.6b11523] [Citation(s) in RCA: 99] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Wolfgang Brenner
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, United Kingdom
| | - Tanya K. Ronson
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, United Kingdom
| | - Jonathan R. Nitschke
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, United Kingdom
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23
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Barata JFB, Neves MGPMS, Faustino MAF, Tomé AC, Cavaleiro JAS. Strategies for Corrole Functionalization. Chem Rev 2016; 117:3192-3253. [PMID: 28222602 DOI: 10.1021/acs.chemrev.6b00476] [Citation(s) in RCA: 149] [Impact Index Per Article: 18.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
This review covers the functionalization reactions of meso-arylcorroles, both at the inner core, as well as the peripheral positions of the macrocycle. Experimental details for the synthesis of all known metallocorrole types and for the N-alkylation reactions are presented. Key peripheral functionalization reactions such as halogenation, formylation, carboxylation, nitration, sulfonation, and others are discussed in detail, particularly the nucleophilic aromatic substitution and the participation of corroles in cycloaddition reactions as 2π or 4π components (covering Diels-Alder and 1,3-dipolar cycloadditions). Other functionalizations of corroles include a large diversity of reactions, namely Wittig reactions, reactions with methylene active compounds, formation of amines, amides, and imines, and metal catalyzed reactions. At the final section, the reactions involving oxidation and ring expansion of the corrole macrocycle are described comprehensively.
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Affiliation(s)
- Joana F B Barata
- Department of Chemistry and QOPNA, and ‡Department of Chemistry and CICECO, University of Aveiro , 3810-193 Aveiro, Portugal
| | - M Graça P M S Neves
- Department of Chemistry and QOPNA, and ‡Department of Chemistry and CICECO, University of Aveiro , 3810-193 Aveiro, Portugal
| | - M Amparo F Faustino
- Department of Chemistry and QOPNA, and ‡Department of Chemistry and CICECO, University of Aveiro , 3810-193 Aveiro, Portugal
| | - Augusto C Tomé
- Department of Chemistry and QOPNA, and ‡Department of Chemistry and CICECO, University of Aveiro , 3810-193 Aveiro, Portugal
| | - José A S Cavaleiro
- Department of Chemistry and QOPNA, and ‡Department of Chemistry and CICECO, University of Aveiro , 3810-193 Aveiro, Portugal
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24
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Gutsche CS, Ortwerth M, Gräfe S, Flanagan KJ, Senge MO, Reissig HU, Kulak N, Wiehe A. Nucleophilic Aromatic Substitution on Pentafluorophenyl-Substituted Dipyrranes and Tetrapyrroles as a Route to Multifunctionalized Chromophores for Potential Application in Photodynamic Therapy. Chemistry 2016; 22:13953-13964. [PMID: 27549436 DOI: 10.1002/chem.201601857] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2016] [Indexed: 12/12/2022]
Abstract
The application of porphyrinoids in biomedical fields, such as photodynamic therapy (PDT), requires the introduction of functional groups to tune their solubility for the biological environment and to allow a coupling to other active moieties or carrier systems. A valuable motif in this regard is the pentafluorophenyl (PFP) substituent, which can easily undergo a regiospecific nucleophilic replacement (SN Ar) of its para-fluorine atom by a number of nucleophiles. Here, it is shown that, instead of amino-substitution on the final porphyrinoid or BODIPY (boron dipyrromethene), the precursor 5-(PFP)-dipyrrane can be modified with amines (or alcohols). These dipyrranes were transformed into amino-substituted BODIPYs. Condensation of these dipyrranes with aldehydes gave access to trans-A2 B2 -porphyrins and trans-A2 B-corroles. By using pentafluorobenzaldehyde, it was possible to introduce another para-fluorine atom, which enabled the synthesis of multifunctionalized tetrapyrroles. Furthermore, alkoxy- and amino-substituted dipyrranes were applied to the synthesis of A3 B3 -hexaphyrins. The polar porphyrins that were prepared by using this method exhibited in vitro PDT activity against several tumor cell lines.
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Affiliation(s)
- Claudia S Gutsche
- Institut für Chemie und Biochemie, Freie Universität Berlin, Fabeckstrasse 34/36, 14195, Berlin, Germany.,Institut für Chemie und Biochemie, Freie Universität Berlin, Takustr. 3, 14195, Berlin, Germany.,biolitec research GmbH, Otto-Schott-Str. 15, 07745, Jena, Germany
| | - Marlene Ortwerth
- Institut für Chemie und Biochemie, Freie Universität Berlin, Fabeckstrasse 34/36, 14195, Berlin, Germany.,Institut für Chemie und Biochemie, Freie Universität Berlin, Takustr. 3, 14195, Berlin, Germany.,biolitec research GmbH, Otto-Schott-Str. 15, 07745, Jena, Germany
| | - Susanna Gräfe
- biolitec research GmbH, Otto-Schott-Str. 15, 07745, Jena, Germany
| | - Keith J Flanagan
- School of Chemistry, SFI Tetrapyrrole Laboratory, Trinity Biomedical Sciences Institute, Trinity College Dublin, The University of Dublin, 152-160 Pearse Street, Dublin 2, Ireland
| | - Mathias O Senge
- School of Chemistry, SFI Tetrapyrrole Laboratory, Trinity Biomedical Sciences Institute, Trinity College Dublin, The University of Dublin, 152-160 Pearse Street, Dublin 2, Ireland
| | - Hans-Ulrich Reissig
- Institut für Chemie und Biochemie, Freie Universität Berlin, Takustr. 3, 14195, Berlin, Germany
| | - Nora Kulak
- Institut für Chemie und Biochemie, Freie Universität Berlin, Fabeckstrasse 34/36, 14195, Berlin, Germany
| | - Arno Wiehe
- Institut für Chemie und Biochemie, Freie Universität Berlin, Takustr. 3, 14195, Berlin, Germany. .,biolitec research GmbH, Otto-Schott-Str. 15, 07745, Jena, Germany.
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25
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Hyland MA, Hewage N, Panther K, Nimthong-Roldán A, Zeller M, Samaraweera M, Gascon JA, Brückner C. Chromene-Annulated Bacteriochlorins. J Org Chem 2016; 81:3603-18. [DOI: 10.1021/acs.joc.6b00273] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Michael A. Hyland
- Department
of Chemistry, University of Connecticut, Storrs, Connecticut 06269-3060, United States
| | - Nisansala Hewage
- Department
of Chemistry, University of Connecticut, Storrs, Connecticut 06269-3060, United States
| | - Kimberly Panther
- Department
of Chemistry, University of Connecticut, Storrs, Connecticut 06269-3060, United States
| | - Arunpatcha Nimthong-Roldán
- Department
of Chemistry, Youngstown State University, One University Plaza, Youngstown, Ohio 44555-3663, United States
| | - Matthias Zeller
- Department
of Chemistry, Youngstown State University, One University Plaza, Youngstown, Ohio 44555-3663, United States
| | - Milinda Samaraweera
- Department
of Chemistry, University of Connecticut, Storrs, Connecticut 06269-3060, United States
| | - José A. Gascon
- Department
of Chemistry, University of Connecticut, Storrs, Connecticut 06269-3060, United States
| | - Christian Brückner
- Department
of Chemistry, University of Connecticut, Storrs, Connecticut 06269-3060, United States
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26
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Bhupathiraju NVSDK, Rizvi W, Batteas JD, Drain CM. Fluorinated porphyrinoids as efficient platforms for new photonic materials, sensors, and therapeutics. Org Biomol Chem 2016; 14:389-408. [PMID: 26514229 PMCID: PMC6180335 DOI: 10.1039/c5ob01839k] [Citation(s) in RCA: 76] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Porphyrinoids are robust heterocyclic dyes studied extensively for their applications in medicine and as photonic materials because of their tunable photophysical properties, diverse means of modifying the periphery, and the ability to chelate most transition metals. Commercial applications include their use as phthalocyanine dyes in optical discs, porphyrins in photodynamic therapy, and as oxygen sensors. Most applications of these dyes require exocyclic moieties to improve solubility, target diseases, modulate photophysical properties, or direct the self-organization into architectures with desired photonic properties. The synthesis of the porphyrinoid depends on the desired application, but the de novo synthesis often involves several steps, is time consuming, and results in low isolated yields. Thus, the application of core porphyrinoid platforms that can be rapidly and efficiently modified to evaluate new molecular architectures allows researchers to focus on the design concepts rather than the synthesis methods, and opens porphyrinoid chemistry to a broader scientific community. We have focused on several widely available, commercially viable porphyrinoids as platforms: meso-perfluorophenylporphyrin, perfluorophthalocyanine, and meso-perfluorophenylcorrole. The perfluorophenylporphyrin is readily converted to the chlorin, bacteriochlorin, and isobacteriochlorin. Derivatives of all six of these core platforms can be efficiently and controllably made via mild nucleophilic aromatic substitution reactions using primary S, N, and O nucleophiles bearing a wide variety of functional groups. The remaining fluoro groups enhance the photo and oxidative stability of the dyes and can serve as spectroscopic signatures to characterize the compounds or in imaging applications using (19)F NMR. This review provides an overview of the chemistry of fluorinated porphyrinoids that are being used as a platform to create libraries of photo-active compounds for applications in medicine and materials.
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Affiliation(s)
- N V S Dinesh K Bhupathiraju
- Department of Chemistry and Biochemistry, Hunter College and Graduate Center of the City University of New York (CUNY), 695 Park Avenue, New York, NY 10065, USA
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27
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Staegemann MH, Gräfe S, Haag R, Wiehe A. A toolset of functionalized porphyrins with different linker strategies for application in bioconjugation. Org Biomol Chem 2016; 14:9114-9132. [DOI: 10.1039/c6ob01551d] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Polar, functionalized A3B-porphyrins are conjugated to hyperbranched polyglycerol (hPG) as an example of a biocompatible carrier system for photodynamic therapy.
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Affiliation(s)
- M. H. Staegemann
- Institut für Chemie und Biochemie
- Freie Universität Berlin
- 14195 Berlin
- Germany
- Biolitec research GmbH
| | - S. Gräfe
- Biolitec research GmbH
- 07745 Jena
- Germany
| | - R. Haag
- Institut für Chemie und Biochemie
- Freie Universität Berlin
- 14195 Berlin
- Germany
| | - A. Wiehe
- Institut für Chemie und Biochemie
- Freie Universität Berlin
- 14195 Berlin
- Germany
- Biolitec research GmbH
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28
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Turgut H, Delaittre G. On the Orthogonality of Two Thiol-Based Modular Ligations. Chemistry 2015; 22:1511-21. [DOI: 10.1002/chem.201503844] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2015] [Indexed: 12/11/2022]
Affiliation(s)
- Hatice Turgut
- Institute of Toxicology and Genetics (ITG); Karlsruhe Institute of Technology (KIT); Hermann-von-Helmholtz-Platz 1 76344 Eggenstein-Leopoldshafen Germany
- Preparative Macromolecular Chemistry; Institute for Chemical Technology and Polymer Chemistry (ITCP); Karlsruhe Institute of Technology (KIT); Engesserstr. 18 76128 Karlsruhe Germany
| | - Guillaume Delaittre
- Institute of Toxicology and Genetics (ITG); Karlsruhe Institute of Technology (KIT); Hermann-von-Helmholtz-Platz 1 76344 Eggenstein-Leopoldshafen Germany
- Preparative Macromolecular Chemistry; Institute for Chemical Technology and Polymer Chemistry (ITCP); Karlsruhe Institute of Technology (KIT); Engesserstr. 18 76128 Karlsruhe Germany
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29
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Tseberlidis G, Zardi P, Caselli A, Cancogni D, Fusari M, Lay L, Gallo E. Glycoporphyrin Catalysts for Efficient C–H Bond Aminations by Organic Azides. Organometallics 2015. [DOI: 10.1021/acs.organomet.5b00436] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Giorgio Tseberlidis
- Department of Chemistry, University of Milan, Via Golgi 19, 20133 Milan, Italy
| | - Paolo Zardi
- Department of Chemistry, University of Milan, Via Golgi 19, 20133 Milan, Italy
| | - Alessandro Caselli
- Department of Chemistry, University of Milan, Via Golgi 19, 20133 Milan, Italy
| | - Damiano Cancogni
- Department of Chemistry, University of Milan, Via Golgi 19, 20133 Milan, Italy
| | - Matteo Fusari
- Department of Chemistry, University of Milan, Via Golgi 19, 20133 Milan, Italy
| | - Luigi Lay
- Department of Chemistry, University of Milan, Via Golgi 19, 20133 Milan, Italy
| | - Emma Gallo
- Department of Chemistry, University of Milan, Via Golgi 19, 20133 Milan, Italy
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30
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Birin KP, Gorbunova YG, Tsivadze AY, Bessmertnykh-Lemeune AG, Guilard R. Insights into the Synthesis and the Solution Behavior ofmeso-Aryloxy- and Alkoxy-Substituted Porphyrins. European J Org Chem 2015. [DOI: 10.1002/ejoc.201500628] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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31
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Synthesis of Functionalized BODIPYs, BODIPY-Corrole, and BODIPY-Porphyrin Arrays with 1,2,3-Triazole Linkers Using the 4-Azido(tetrafluorophenyl)-BODIPY Building Block. European J Org Chem 2015. [DOI: 10.1002/ejoc.201500413] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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32
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Golf HRA, Reissig HU, Wiehe A. Synthesis of SF5-Substituted Tetrapyrroles, Metalloporphyrins, BODIPYs, and Their Dipyrrane Precursors. J Org Chem 2015; 80:5133-43. [DOI: 10.1021/acs.joc.5b00528] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Hartwig R. A. Golf
- Institut
für Chemie und Biochemie, Freie Universität Berlin, Takustrasse 3, 14195 Berlin, Germany
- Biolitec Research GmbH, Otto-Schott-Strasse
15, 07745 Jena, Germany
| | - Hans-Ulrich Reissig
- Institut
für Chemie und Biochemie, Freie Universität Berlin, Takustrasse 3, 14195 Berlin, Germany
| | - Arno Wiehe
- Institut
für Chemie und Biochemie, Freie Universität Berlin, Takustrasse 3, 14195 Berlin, Germany
- Biolitec Research GmbH, Otto-Schott-Strasse
15, 07745 Jena, Germany
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33
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Golf HRA, Reissig HU, Wiehe A. Nucleophilic Substitution on (Pentafluorophenyl)dipyrromethane: A New Route to Building Blocks for Functionalized BODIPYs and Tetrapyrroles. Org Lett 2015; 17:982-5. [DOI: 10.1021/acs.orglett.5b00082] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Hartwig R. A. Golf
- Institut
für Chemie und Biochemie, Freie Universität Berlin, Takustrasse 3, 14195 Berlin, Germany
- Biolitec Research GmbH, Otto-Schott-Strasse
15, 07745 Jena, Germany
| | - Hans-Ulrich Reissig
- Institut
für Chemie und Biochemie, Freie Universität Berlin, Takustrasse 3, 14195 Berlin, Germany
| | - Arno Wiehe
- Institut
für Chemie und Biochemie, Freie Universität Berlin, Takustrasse 3, 14195 Berlin, Germany
- Biolitec Research GmbH, Otto-Schott-Strasse
15, 07745 Jena, Germany
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