1
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Kanbe A, Yokoi K, Yamada Y, Tsurui M, Kitagawa Y, Hasegawa Y, Ogata D, Yuasa J, Aoki S. Optical Resolution of Carboxylic Acid Derivatives of Homoleptic Cyclometalated Iridium(III) Complexes via Diastereomers Formed with Chiral Auxiliaries. Inorg Chem 2023; 62:11325-11341. [PMID: 37432912 PMCID: PMC10369494 DOI: 10.1021/acs.inorgchem.3c00685] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2023] [Indexed: 07/13/2023]
Abstract
We report on a facile method for the optical resolution of cyclometalated iridium(III) (Ir(III)) complexes via diastereomers formed with chiral auxiliaries. The racemic carboxylic acids of Ir(III) complexes (fac-4 (fac-Ir(ppyCO2H)3 (ppy: 2-phenylpyridine)), fac-6 (fac-Ir(tpyCO2H)3 (tpy: 2-(4'-tolyl)pyridine)), and fac-13 (fac-Ir(mpiqCO2H)3 (mpiq: 1-(4'-methylphenyl)isoquinoline))) were converted into the diastereomers, Δ- and Λ-forms of fac-9 (from fac-6), fac-10 (from fac-4), fac-11 (from fac-6), and fac-14 (from fac-13), respectively, by the condensation with (1R,2R)-1,2-diaminocyclohexane or (1R,2R)-2-aminocyclohexanol. The resulting diastereomers were separated by HPLC (with a nonchiral column) or silica gel column chromatography, and their absolute stereochemistry was determined by X-ray single-crystal structure analysis and CD (circular dichroism) spectra. Spectra of all diastereomers of the Ir(III) complexes are reported. Hydrolysis of the ester moieties of Δ- and Λ-forms of fac-10, fac-11, and fac-14 gave both enantiomers of the corresponding carboxylic acid derivatives in the optically pure forms, Δ-fac and Λ-fac-4, -6, and -13, respectively.
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Affiliation(s)
- Azusa Kanbe
- Faculty
of Pharmaceutical Science, Tokyo University
of Science, 2641 Yamazaki, Noda, Chiba 278-8510, Japan
| | - Kenta Yokoi
- Faculty
of Pharmaceutical Science, Tokyo University
of Science, 2641 Yamazaki, Noda, Chiba 278-8510, Japan
| | - Yasuyuki Yamada
- Department
of Chemistry, Graduate School of Science, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8602, Japan
- Research
Center for Materials Science, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8602, Japan
- JST,
PRESTO, 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan
| | - Makoto Tsurui
- Graduate
School of Chemical Sciences and Engineering, Hokkaido University, N13W8, Kita-ku, Sapporo, Hokkaido 060-8628, Japan
| | - Yuichi Kitagawa
- Faculty of
Engineering, Hokkaido University, Kita-13, Nishi-8, Kita-Ku, Sapporo, Hokkaido 060-8628, Japan
- Institute
for Chemical Reaction Design and Discovery (WPI-ICReDD), Hokkaido University, Kita-21, Nishi-10, Kita-Ku, Sapporo, Hokkaido 001-0021, Japan
| | - Yasuchika Hasegawa
- Faculty of
Engineering, Hokkaido University, Kita-13, Nishi-8, Kita-Ku, Sapporo, Hokkaido 060-8628, Japan
- Institute
for Chemical Reaction Design and Discovery (WPI-ICReDD), Hokkaido University, Kita-21, Nishi-10, Kita-Ku, Sapporo, Hokkaido 001-0021, Japan
| | - Daiji Ogata
- Faculty
of Science, Tokyo University of Science, 1-3 Kagurazaka,
Shinjuku-ku, Tokyo 162-8601, Japan
| | - Junpei Yuasa
- Faculty
of Science, Tokyo University of Science, 1-3 Kagurazaka,
Shinjuku-ku, Tokyo 162-8601, Japan
| | - Shin Aoki
- Faculty
of Pharmaceutical Science, Tokyo University
of Science, 2641 Yamazaki, Noda, Chiba 278-8510, Japan
- Research
Institute for Science and Technology (RIST), Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510, Japan
- Research
Institute for Biomedical Science (RIBS), Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510, Japan
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2
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Yokoi K, Balachandran C, Umezawa M, Tsuchiya K, Mitrić A, Aoki S. Amphiphilic Cationic Triscyclometalated Iridium(III) Complex-Peptide Hybrids Induce Paraptosis-like Cell Death of Cancer Cells via an Intracellular Ca 2+-Dependent Pathway. ACS OMEGA 2020; 5:6983-7001. [PMID: 32258934 PMCID: PMC7114882 DOI: 10.1021/acsomega.0c00337] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/24/2020] [Accepted: 02/27/2020] [Indexed: 06/11/2023]
Abstract
We report on the design and synthesis of a green-emitting iridium complex-peptide hybrid (IPH) 4, which has an electron-donating hydroxyacetic acid (glycolic acid) moiety between the Ir core and the peptide part. It was found that 4 is selectively cytotoxic against cancer cells, and the dead cells showed a green emission. Mechanistic studies of cell death indicate that 4 induces a paraptosis-like cell death through the increase in mitochondrial Ca2+ concentrations via direct Ca2+ transfer from ER to mitochondria, the loss of mitochondrial membrane potential (ΔΨm), and the vacuolization of cytoplasm and intracellular organelle. Although typical paraptosis and/or autophagy markers were upregulated by 4 through the mitogen-activated protein kinase (MAPK) signaling pathway, as confirmed by Western blot analysis, autophagy is not the main pathway in 4-induced cell death. The degradation of actin, which consists of a cytoskeleton, is also induced by high concentrations of Ca2+, as evidenced by costaining experiments using a specific probe. These results will be presented and discussed.
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Affiliation(s)
- Kenta Yokoi
- Faculty of Pharmaceutical
Sciences, Tokyo University of Science, 2641 Yamazaki,
Noda, Chiba 278-8510, Japan
| | - Chandrasekar Balachandran
- Faculty of Pharmaceutical
Sciences, Tokyo University of Science, 2641 Yamazaki,
Noda, Chiba 278-8510, Japan
| | - Masakazu Umezawa
- Research Institute for Science and Technology (RIST), Tokyo University of Science, 2641 Yamazaki,
Noda, Chiba 278-8510, Japan
| | - Koji Tsuchiya
- Research Institute for Science and Technology (RIST), Tokyo University of Science, 2641 Yamazaki,
Noda, Chiba 278-8510, Japan
| | - Aleksandra Mitrić
- Faculty of Pharmaceutical
Sciences, Tokyo University of Science, 2641 Yamazaki,
Noda, Chiba 278-8510, Japan
- Faculty of Technology and Metallurgy, University of Belgrade, 4 Karnegijeva Street, Belgrade 11000, Serbia
| | - Shin Aoki
- Faculty of Pharmaceutical
Sciences, Tokyo University of Science, 2641 Yamazaki,
Noda, Chiba 278-8510, Japan
- Research Institute for Science and Technology (RIST), Tokyo University of Science, 2641 Yamazaki,
Noda, Chiba 278-8510, Japan
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3
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Filatov MA. Heavy-atom-free BODIPY photosensitizers with intersystem crossing mediated by intramolecular photoinduced electron transfer. Org Biomol Chem 2019; 18:10-27. [PMID: 31750502 DOI: 10.1039/c9ob02170a] [Citation(s) in RCA: 129] [Impact Index Per Article: 25.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Organic photosensitizers possessing efficient intersystem crossing (ISC) and forming long-living triplet excited states, play a crucial role in a number of applications. A common approach in the design of such dyes relies on the introduction of heavy atoms (e.g. transition metals or halogens) into the structure, which promote ISC via spin-orbit coupling interaction. In recent years, alternative methods to enhance ISC have been actively studied. Among those, the generation of triplet excited states through photoinduced electron transfer (PET) in heavy-atom-free molecules has attracted particular attention because it allows for the development of photosensitizers with programmed triplet state and fluorescence quantum yields. Due to their synthetic accessibility and tunability of optical properties, boron dipyrromethenes (BODIPYs) are so far the most perspective class of photosensitizers operating via this mechanism. This article reviews recently reported heavy-atom-free BODIPY donor-acceptor dyads and dimers which produce long-living triplet excited states and generate singlet oxygen. Structural factors which affect PET and concomitant triplet state formation in these molecules are discussed and the reported data on triplet state yields and singlet oxygen generation quantum yields in various solvents are summarized. Finally, examples of recent applications of these systems are highlighted.
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Affiliation(s)
- Mikhail A Filatov
- School of Chemical and Pharmaceutical Sciences, Technological University Dublin, City Campus, Kevin Street, Dublin 8, Ireland.
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4
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Yasuda J, Inoue K, Mizuno K, Arai S, Uehara K, Kikuchi A, Yan YN, Yamanishi K, Kataoka Y, Kato M, Kawai A, Kawamoto T. Photooxidation Reactions of Cyclometalated Palladium(II) and Platinum(II) Complexes. Inorg Chem 2019; 58:15720-15725. [PMID: 31718162 DOI: 10.1021/acs.inorgchem.9b01492] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
New C,N,S-cyclometalated palladium(II) and platinum(II) complexes have been synthesized and their structural, electrochemical, and photochemical properties examined. The blue color of these complexes in solution changed to yellow under visible-light irradiation. By measurement of the absorption spectra for quantifying changes in color, isosbestic points for each complex clearly indicated the presence of only two species responsible for the change of color. X-ray analysis revealed that the visible-light-induced yellow species were S-oxygenated sulfinato complexes. Photosensitized generation of singlet oxygen (1O2) was confirmed by the direct detection of singlet oxygen luminescence at 1275 nm. The present cyclometalated palladium(II) and platinum(II) complexes are efficient photosensitizers of singlet oxygen, which rapidly reacts with coordinating sulfur atoms.
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Affiliation(s)
- Jun Yasuda
- Department of Chemistry, Faculty of Science , Kanagawa University , 2946 Tsuchiya , Hiratsuka 259-1293 , Japan
| | - Keisuke Inoue
- Department of Chemistry, Faculty of Science , Kanagawa University , 2946 Tsuchiya , Hiratsuka 259-1293 , Japan
| | - Koichi Mizuno
- Department of Chemistry, Faculty of Science , Kanagawa University , 2946 Tsuchiya , Hiratsuka 259-1293 , Japan
| | - Shiho Arai
- Department of Chemistry, Faculty of Science , Kanagawa University , 2946 Tsuchiya , Hiratsuka 259-1293 , Japan
| | - Koushi Uehara
- Department of Chemistry, Faculty of Science , Kanagawa University , 2946 Tsuchiya , Hiratsuka 259-1293 , Japan
| | - Asumi Kikuchi
- Department of Chemistry, Faculty of Science , Kanagawa University , 2946 Tsuchiya , Hiratsuka 259-1293 , Japan
| | - Yin-Nan Yan
- Department of Chemistry, Faculty of Science , Kanagawa University , 2946 Tsuchiya , Hiratsuka 259-1293 , Japan
| | - Katsunori Yamanishi
- Department of Chemistry, Faculty of Science , Kanagawa University , 2946 Tsuchiya , Hiratsuka 259-1293 , Japan
| | - Yusuke Kataoka
- Department of Material Science, Interdisciplinary Graduate School of Science and Engineering , Shimane University , 1060 Nishikawatsu , Matsue 690-8504 , Japan
| | - Mai Kato
- Department of Chemistry , Tokyo Institute of Technology , 2-12-1 Ohokayama, Meguro-ku , Tokyo 152-8551 , Japan
| | - Akio Kawai
- Department of Chemistry, Faculty of Science , Kanagawa University , 2946 Tsuchiya , Hiratsuka 259-1293 , Japan.,Department of Chemistry , Tokyo Institute of Technology , 2-12-1 Ohokayama, Meguro-ku , Tokyo 152-8551 , Japan
| | - Tatsuya Kawamoto
- Department of Chemistry, Faculty of Science , Kanagawa University , 2946 Tsuchiya , Hiratsuka 259-1293 , Japan
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5
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Öztürk E, Eserci H, Okutan E. Perylenebisimide-fullerene dyads as heavy atom free triplet photosensitizers with unique singlet oxygen generation efficiencies. J Photochem Photobiol A Chem 2019. [DOI: 10.1016/j.jphotochem.2019.112022] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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6
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Wei Y, Zheng M, Zhou Q, Zhou X, Liu S. Application of a bodipy-C 70 dyad in triplet-triplet annihilation upconversion of perylene as a metal-free photosensitizer. Org Biomol Chem 2019; 16:5598-5608. [PMID: 30027981 DOI: 10.1039/c8ob01410h] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A bodipy-C70 dyad was synthesized and applied in triplet-triplet annihilation (TTA) upconversion of perylene as a novel metal-free organic photosensitizer. The photophysical processes were investigated by the methods of steady-state UV-Vis absorption and fluorescence spectroscopy, nanosecond time-resolved transient absorption spectroscopy, cyclic voltammetry, and density functional theory calculations. The bodipy-C70 dyad showed an increased molar extinction coefficient up to 82 300 mol-1 cm-1 at 518 nm compared with the C70 monomer. With photo-excitation of the bodipy moiety at 532 nm, the intramolecular singlet-singlet energy transfer between bodipy and C70 units was efficient with a quantum yield of nearly 100%, and the lowest triplet state of the dyad was subsequently populated via ISC of the C70 moiety, with a lifetime of ca. 80 μs in toluene. Electrochemical investigation suggested that the intramolecular electron transfer of the excited dyad was thermodynamically prohibited in toluene due to the positive ΔGCS for charge-separation. With the presence of perylene in solution as the triplet energy acceptor and emitter, the TTA upconverted fluorescence was observed with a maximum quantum yield of 10.3%. The overall upconversion capability of 4417 M-1 cm-1 exceeded that of C70 approximately two-fold. Moreover, the bodipy-C70 dyad also exhibited an enhanced optical stability under intense irradiation. All data indicated that the dyad was another ideal photosensitizer for TTA upconversion of perylene in the fullerene derivative family.
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Affiliation(s)
- Yaxiong Wei
- Hefei National Laboratory for Physical Sciences at the Microscale, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), Department of Chemical Physics, University of Science and Technology of China, Hefei, Anhui 230026, China.
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7
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Yokoi K, Hisamatsu Y, Naito K, Aoki S. Design, Synthesis, and Anticancer Activities of Cyclometalated Tris(2-phenylpyridine)iridium(III) Complexes with Cationic Peptides at the 4′-Position of the 2-Phenylpyridine Ligand. Eur J Inorg Chem 2017. [DOI: 10.1002/ejic.201700846] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- Kenta Yokoi
- Faculty of Pharmaceutical Sciences; Tokyo University of Science; 2641Yamazaki 278-8510 Noda Chiba Japan
| | - Yosuke Hisamatsu
- Faculty of Pharmaceutical Sciences; Tokyo University of Science; 2641Yamazaki 278-8510 Noda Chiba Japan
| | - Kana Naito
- Faculty of Pharmaceutical Sciences; Tokyo University of Science; 2641Yamazaki 278-8510 Noda Chiba Japan
| | - Shin Aoki
- Faculty of Pharmaceutical Sciences; Tokyo University of Science; 2641Yamazaki 278-8510 Noda Chiba Japan
- Division of Medical-Science-Engineering Cooperation; Research Institute for Science and Technology; Tokyo University of Science; 2641Yamazaki 278-8510 Noda Chiba Japan
- Imaging Frontier Center; Research Institute for Science and Technology; Tokyo University of Science; 2641Yamazaki 278-8510 Noda Chiba Japan
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8
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Hisamatsu Y, Kumar S, Aoki S. Design and Synthesis of Tris-Heteroleptic Cyclometalated Iridium(III) Complexes Consisting of Three Different Nonsymmetric Ligands Based on Ligand-Selective Electrophilic Reactions via Interligand HOMO Hopping Phenomena. Inorg Chem 2016; 56:886-899. [DOI: 10.1021/acs.inorgchem.6b02519] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Yosuke Hisamatsu
- Faculty
of Pharmaceutical Sciences, ‡Division of Medical Science-Engineering
Cooperation, Research Institute for Science and Technology, and §Imaging Frontier
Center, Research Institute for Science and Technology, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510, Japan
| | - Sarvendra Kumar
- Faculty
of Pharmaceutical Sciences, ‡Division of Medical Science-Engineering
Cooperation, Research Institute for Science and Technology, and §Imaging Frontier
Center, Research Institute for Science and Technology, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510, Japan
| | - Shin Aoki
- Faculty
of Pharmaceutical Sciences, ‡Division of Medical Science-Engineering
Cooperation, Research Institute for Science and Technology, and §Imaging Frontier
Center, Research Institute for Science and Technology, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510, Japan
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9
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Hisamatsu Y, Suzuki N, Masum AA, Shibuya A, Abe R, Sato A, Tanuma SI, Aoki S. Cationic Amphiphilic Tris-Cyclometalated Iridium(III) Complexes Induce Cancer Cell Death via Interaction with Ca2+-Calmodulin Complex. Bioconjug Chem 2016; 28:507-523. [DOI: 10.1021/acs.bioconjchem.6b00627] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Yosuke Hisamatsu
- Faculty of Pharmaceutical Sciences, ‡Research Institute for Biomedical Sciences, §Division of Medical-Science-Engineering
Cooperation and ∥Imaging Frontier Center, Research Institute for Science
and Technology, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510, Japan
| | - Nozomi Suzuki
- Faculty of Pharmaceutical Sciences, ‡Research Institute for Biomedical Sciences, §Division of Medical-Science-Engineering
Cooperation and ∥Imaging Frontier Center, Research Institute for Science
and Technology, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510, Japan
| | - Abdullah-Al Masum
- Faculty of Pharmaceutical Sciences, ‡Research Institute for Biomedical Sciences, §Division of Medical-Science-Engineering
Cooperation and ∥Imaging Frontier Center, Research Institute for Science
and Technology, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510, Japan
| | - Ai Shibuya
- Faculty of Pharmaceutical Sciences, ‡Research Institute for Biomedical Sciences, §Division of Medical-Science-Engineering
Cooperation and ∥Imaging Frontier Center, Research Institute for Science
and Technology, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510, Japan
| | - Ryo Abe
- Faculty of Pharmaceutical Sciences, ‡Research Institute for Biomedical Sciences, §Division of Medical-Science-Engineering
Cooperation and ∥Imaging Frontier Center, Research Institute for Science
and Technology, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510, Japan
| | - Akira Sato
- Faculty of Pharmaceutical Sciences, ‡Research Institute for Biomedical Sciences, §Division of Medical-Science-Engineering
Cooperation and ∥Imaging Frontier Center, Research Institute for Science
and Technology, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510, Japan
| | - Sei-ichi Tanuma
- Faculty of Pharmaceutical Sciences, ‡Research Institute for Biomedical Sciences, §Division of Medical-Science-Engineering
Cooperation and ∥Imaging Frontier Center, Research Institute for Science
and Technology, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510, Japan
| | - Shin Aoki
- Faculty of Pharmaceutical Sciences, ‡Research Institute for Biomedical Sciences, §Division of Medical-Science-Engineering
Cooperation and ∥Imaging Frontier Center, Research Institute for Science
and Technology, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510, Japan
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