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Zayakin IA, Petunin PV, Postnikov PS, Dmitriev AA, Gritsan NP, Dorovatovskii P, Korlyukov A, Fedin MV, Bogomyakov AS, Akyeva AY, Novikov RA, Shangin PG, Syroeshkin MA, Burykina JV, Tretyakov EV. Toward New Horizons in Verdazyl-Nitroxide High-Spin Systems: Thermally Robust Tetraradical with Quintet Ground State. J Am Chem Soc 2024. [PMID: 38709144 DOI: 10.1021/jacs.4c04391] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/07/2024]
Abstract
High-spin organic tetraradicals with significant intramolecular exchange interactions have high potential for advanced technological applications and fundamental research, but examples reported to date exhibit limited stability and processability. In this work, we designed the first tetraradical based on an oxoverdazyl core and nitronyl nitroxide radicals and successfully synthesized it using a palladium-catalyzed cross-coupling reaction of an oxoverdazyl radical bearing three iodo-phenylene moieties with a gold(I) nitronyl nitroxide-2-ide complex in the presence of a recently developed efficient catalytic system. The molecular and crystal structures of the tetraradical were confirmed by single crystal X-ray diffraction analysis. The tetraradical possesses good thermal stability with decomposition onset at ∼125 °C in an inert atmosphere; in a toluene solution upon prolonged heating at 90 °C in air, no decomposition was observed. The resulting unique verdazyl-nitroxide conjugate was thoroughly studied using a range of experimental and theoretical techniques, such as SQUID magnetometry of polycrystalline powders, EPR spectroscopy in various matrices, cyclic voltammetry, and high-level quantum chemical calculations. All collected data confirm the high thermal stability of the resulting tetraradical and quintet multiplicity of its ground state, which makes the synthesis of this important paramagnet a new milestone in the field of creating high-spin systems.
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Affiliation(s)
- Igor A Zayakin
- N.D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky Ave. 47, Moscow 119991, Russian Federation
| | - Pavel V Petunin
- Tomsk Polytechnic University, Tomsk 634050, Russian Federation
| | | | - Alexey A Dmitriev
- V.V. Voevodsky Institute of Chemical Kinetics and Combustion, Siberian Branch of Russian Academy of Sciences, Institutskaya Str. 3, Novosibirsk 630090, Russian Federation
| | - Nina P Gritsan
- V.V. Voevodsky Institute of Chemical Kinetics and Combustion, Siberian Branch of Russian Academy of Sciences, Institutskaya Str. 3, Novosibirsk 630090, Russian Federation
| | | | - Alexander Korlyukov
- A.N. Nesmeyanov Institute of Organoelement Compounds, 28 Vavilov Str., Moscow 119991, Russian Federation
| | - Matvey V Fedin
- International Tomography Center, Siberian Branch of Russian Academy of Sciences, Institutskaya Str. 3a, Novosibirsk 630090, Russian Federation
| | - Artem S Bogomyakov
- International Tomography Center, Siberian Branch of Russian Academy of Sciences, Institutskaya Str. 3a, Novosibirsk 630090, Russian Federation
| | - Anna Ya Akyeva
- N.D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky Ave. 47, Moscow 119991, Russian Federation
| | - Roman A Novikov
- N.D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky Ave. 47, Moscow 119991, Russian Federation
| | - Pavel G Shangin
- N.D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky Ave. 47, Moscow 119991, Russian Federation
| | - Mikhail A Syroeshkin
- N.D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky Ave. 47, Moscow 119991, Russian Federation
| | - Julia V Burykina
- N.D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky Ave. 47, Moscow 119991, Russian Federation
| | - Evgeny V Tretyakov
- N.D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky Ave. 47, Moscow 119991, Russian Federation
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2
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Anisenko A, Galkin S, Mikhaylov AA, Khrenova MG, Agapkina Y, Korolev S, Garkul L, Shirokova V, Ikonnikova VA, Korlyukov A, Dorovatovskii P, Baranov M, Gottikh M. KuINins as a New Class of HIV-1 Inhibitors That Block Post-Integration DNA Repair. Int J Mol Sci 2023; 24:17354. [PMID: 38139188 PMCID: PMC10744174 DOI: 10.3390/ijms242417354] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2023] [Revised: 12/04/2023] [Accepted: 12/04/2023] [Indexed: 12/24/2023] Open
Abstract
Integration of HIV-1 genomic cDNA results in the formation of single-strand breaks in cellular DNA, which must be repaired for efficient viral replication. Post-integration DNA repair mainly depends on the formation of the HIV-1 integrase complex with the Ku70 protein, which promotes DNA-PK assembly at sites of integration and its activation. Here, we have developed a first-class inhibitor of the integrase-Ku70 complex formation that inhibits HIV-1 replication in cell culture by acting at the stage of post-integration DNA repair. This inhibitor, named s17, does not affect the main cellular function of Ku70, namely its participation in the repair of double-strand DNA breaks through the non-homologous end-joining pathway. Using a molecular dynamics approach, we have constructed a model for the interaction of s17 with Ku70. According to this model, the interaction of two phenyl radicals of s17 with the L76 residue of Ku70 is important for this interaction. The requirement of two phenyl radicals in the structure of s17 for its inhibitory properties was confirmed using a set of s17 derivatives. We propose to stimulate compounds that inhibit post-integration repair by disrupting the integrase binding to Ku70 KuINins.
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Affiliation(s)
- Andrey Anisenko
- Chemistry Department, Lomonosov Moscow State University, 119992 Moscow, Russia; (M.G.K.); (Y.A.); (S.K.)
- Faculty of Bioengineering and Bioinformatics, Lomonosov Moscow State University, 119992 Moscow, Russia; (S.G.); (L.G.)
- Belozersky Institute of Physico-Chemical Biology, Lomonosov Moscow State University, 119992 Moscow, Russia
| | - Simon Galkin
- Faculty of Bioengineering and Bioinformatics, Lomonosov Moscow State University, 119992 Moscow, Russia; (S.G.); (L.G.)
| | - Andrey A. Mikhaylov
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry of the Russian Academy of Sciences, 117997 Moscow, Russia (V.S.); (V.A.I.); (M.B.)
| | - Maria G. Khrenova
- Chemistry Department, Lomonosov Moscow State University, 119992 Moscow, Russia; (M.G.K.); (Y.A.); (S.K.)
- Federal Research Centre of Biotechnology, Russian Academy of Sciences, 119071 Moscow, Russia
| | - Yulia Agapkina
- Chemistry Department, Lomonosov Moscow State University, 119992 Moscow, Russia; (M.G.K.); (Y.A.); (S.K.)
- Belozersky Institute of Physico-Chemical Biology, Lomonosov Moscow State University, 119992 Moscow, Russia
| | - Sergey Korolev
- Chemistry Department, Lomonosov Moscow State University, 119992 Moscow, Russia; (M.G.K.); (Y.A.); (S.K.)
- Belozersky Institute of Physico-Chemical Biology, Lomonosov Moscow State University, 119992 Moscow, Russia
| | - Lidia Garkul
- Faculty of Bioengineering and Bioinformatics, Lomonosov Moscow State University, 119992 Moscow, Russia; (S.G.); (L.G.)
| | - Vasilissa Shirokova
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry of the Russian Academy of Sciences, 117997 Moscow, Russia (V.S.); (V.A.I.); (M.B.)
- Higher Chemical College, D.I. Mendeleev University of Chemical Technology of Russia, 125047 Moscow, Russia
| | - Viktoria A. Ikonnikova
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry of the Russian Academy of Sciences, 117997 Moscow, Russia (V.S.); (V.A.I.); (M.B.)
- Higher Chemical College, D.I. Mendeleev University of Chemical Technology of Russia, 125047 Moscow, Russia
| | - Alexander Korlyukov
- Nesmeyanov Institute of Organoelement Compounds, 119334 Moscow, Russia;
- Institute of Translational Medicine and Institute of Pharmacy and Medicinal Chemistry, Pirogov Russian National Research Medical University, 117997 Moscow, Russia
| | | | - Mikhail Baranov
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry of the Russian Academy of Sciences, 117997 Moscow, Russia (V.S.); (V.A.I.); (M.B.)
- Institute of Translational Medicine and Institute of Pharmacy and Medicinal Chemistry, Pirogov Russian National Research Medical University, 117997 Moscow, Russia
| | - Marina Gottikh
- Faculty of Bioengineering and Bioinformatics, Lomonosov Moscow State University, 119992 Moscow, Russia; (S.G.); (L.G.)
- Belozersky Institute of Physico-Chemical Biology, Lomonosov Moscow State University, 119992 Moscow, Russia
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3
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Buikin P, Vologzhanina A, Novikov R, Dorovatovskii P, Korlyukov A. Abiraterone Acetate Complexes with Biometals: Synthesis, Characterization in Solid and Solution, and the Nature of Chemical Bonding. Pharmaceutics 2023; 15:2180. [PMID: 37765151 PMCID: PMC10535913 DOI: 10.3390/pharmaceutics15092180] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2023] [Revised: 08/15/2023] [Accepted: 08/21/2023] [Indexed: 09/29/2023] Open
Abstract
Abiraterone acetate (AbirAc) is the most used steroidal therapeutic agent for treatment of prostate cancer. The mainly hydrophobic molecular surface of AbirAc results in its poor solubility and plays an important role for retention of abiraterone in the cavity of the receptor formed by peptide chains and heme fragments. In order to evaluate the hydrolytic stability of AbirAc, to modify its solubility by formation of new solid forms and to model bonding of this medication with the heme, a series of d-metal complexes with AbirAc was obtained. AbirAc remains stable in water, acetonitrile, tetrahydrofuran, and ethanol, and readily interacts with dications as a terminal ligand to create discrete complexes, including [FePC(AbirAc)2] and [ZnTPP(AbirAc)] (H2PC = phthalocyanine and H2TPP = 5,10,15,20-tetraphenylporphyrine) models for ligand-receptor bonding. In reactions with silver(I) nitrate, AbirAc acts as a bridge ligand. Energies of chemical bonding between AbirAc and these cations vary from 97 to 235 kJ mol-1 and exceed those between metal atoms and water molecules. This can be indicative of the ability of abiraterone to replace solvent molecules in the coordination sphere of biometals in living cells, although the model [ZnTPP] complex remains stable in CDCl3, CD2Cl2, and 1,1,2,2-tetrachloroethane-d2 solvents and decomposes in polar dimethylsulfoxide-d6 and methanol-d4 solvents, as follows from the 1H DOSY spectra. Dynamics of its behavior in 1,1,2,2-tetrachloroethane-d2 were studied by ROESY and NMR spectra.
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Affiliation(s)
- Petr Buikin
- A. N. Nesmeyanov Institute of Organoelement Compounds, RAS, 119334 Moscow, Russia;
- N. S. Kurnakov Institute of General and Inorganic Chemistry, RAS, 119991 Moscow, Russia
| | - Anna Vologzhanina
- A. N. Nesmeyanov Institute of Organoelement Compounds, RAS, 119334 Moscow, Russia;
| | - Roman Novikov
- N. D. Zelinsky Institute of Organic Chemistry, RAS, 119991 Moscow, Russia;
| | | | - Alexander Korlyukov
- A. N. Nesmeyanov Institute of Organoelement Compounds, RAS, 119334 Moscow, Russia;
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Kayukova L, Vologzhanina A, Dorovatovskii P, Yergaliyeva E, Uzakova A, Duisenali A. N-N(+) Bond-Forming Intramolecular Cyclization of O-Tosyloxy β-Aminopropioamidoximes and Ion Exchange Reaction for the Synthesis of 2-Aminospiropyrazolilammonium Chlorides and Hexafluorophosphates. Int J Mol Sci 2023; 24:11315. [PMID: 37511075 PMCID: PMC10379084 DOI: 10.3390/ijms241411315] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Revised: 06/20/2023] [Accepted: 06/22/2023] [Indexed: 07/30/2023] Open
Abstract
Our research area is related to the spiropyrazolinium-containingcompounds, which are insufficiently studied compared with pyrazoline-containing compounds. Nitrogen-containing azoniaspiromolecules have also been well studied. In drug design and other areas, they are a priori important structures, since rigid spirocyclic scaffolds with the reduced conformational entropy are able to organize a closely spaced area. Azoniaspirostructures are currently of wide practical interest as ionic liquids, current sources (membranes), structure-directing agents in organocatalysis, and in the synthesis of ordered ceramics. Our goal was the synthesis of 2-aminospiropyrazolilammonium chlorides and hexafluorophosphates. Our methodology is based on the tosylation of β-aminopropioamidoximes with six-membered N-heterocycles (piperidine, morpholine, thiomorpholine, and phenylpiperazine) at the β-position. 2-Aminospiropyrazolilammonium chlorides and hexafluorophosphates were obtained by the reaction of double ion substitution in the reaction of toluenesulfonates of 2-aminospiropyrazolinium compounds with an ethereal solution of HCl in ethanol and with ammonium hexafluorophosphate in ethanol in quantitative yields of 55-97%. The physicochemical characteristics of the synthesized compounds and their IR and NMR spectra are presented. The obtained salts were additionally characterized by the single-crystal XRD analysis. The presence of both axial and equatorial conformations of spirocations in solids was confirmed. 2-Aminospiropyrazolilammonium chlorides and hexafluorophosphates have weak in vitro antimicrobial activity on Gram-positive and Gram-negative bacterial lines.
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Affiliation(s)
- Lyudmila Kayukova
- JSC A. B. Bekturov Institute of Chemical Sciences, 106 Shokan Ualikhanov St., Almaty 050010, Kazakhstan
| | - Anna Vologzhanina
- A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 28 Vavilova St., B-334, Moscow 119334, Russia
| | | | - Elmira Yergaliyeva
- JSC A. B. Bekturov Institute of Chemical Sciences, 106 Shokan Ualikhanov St., Almaty 050010, Kazakhstan
| | - Asem Uzakova
- JSC A. B. Bekturov Institute of Chemical Sciences, 106 Shokan Ualikhanov St., Almaty 050010, Kazakhstan
| | - Aidana Duisenali
- JSC A. B. Bekturov Institute of Chemical Sciences, 106 Shokan Ualikhanov St., Almaty 050010, Kazakhstan
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Bulygina LA, Khrushcheva NS, Nelyubina YV, Dorovatovskii P, Strelkova TV, Alexeev MS, Mandegani Z, Nabavizadeh SM, Kuznetsov NY. Bilateral metalloheterocyclic systems based on palladacycle and piperidine-2,4-dione pharmacophores. Org Biomol Chem 2023; 21:2337-2354. [PMID: 36825470 DOI: 10.1039/d3ob00022b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/18/2023]
Abstract
The design of molecules with effective anticancer properties constructed from both dually active metal complex and organic fragments is a novel trend in medicinal chemistry. This concept suggests the impact of a drug on several biological targets or the synergistic action of both fragments as a single unit. We propose that the combination of a Pd-metallocomplex fragment and an organic unit can be an interesting model for anticancer drug discovery. The first phase in the development of such suggested molecules is the synthesis of bilateral metallosystems containing bioactive 6-substituted piperidin-2-one and a palladated N-phenylpyrazolic fragment. Both fragments were incorporated into one molecule through the fused pyrazole-piperidine-2-one unit followed by pyrazol-directed cyclopalladation of the phenyl-group with Pd(OAc)2. An effect of acceleration of the rate of the palladation by NH-lactam was observed. The synthesized hybrid palladacycles have been characterized and tested for their cytotoxic activity on three cancerous cell lines as PPh3 complexes, revealing structures with potential for further development and structural optimization.
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Affiliation(s)
- Ludmila A Bulygina
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Vavilov st. 28, 119991 Moscow, Russian Federation.
| | - Natalya S Khrushcheva
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Vavilov st. 28, 119991 Moscow, Russian Federation.
| | - Yulia V Nelyubina
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Vavilov st. 28, 119991 Moscow, Russian Federation.
| | - Pavel Dorovatovskii
- National Research Centre "Kurchatov Institute", 123182, Akademika Kurchatova pl., 1, Moscow, Russian Federation
| | - Tatiana V Strelkova
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Vavilov st. 28, 119991 Moscow, Russian Federation.
| | - Michael S Alexeev
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Vavilov st. 28, 119991 Moscow, Russian Federation. .,A.V. Topchiev Institute of Petrochemical Synthesis, Leninsky Prospect 29, 119991, Moscow, Russian Federation
| | - Zeinab Mandegani
- Professor Rashidi Laboratory of Organometallic Chemistry, Department of Chemistry, College of Sciences, Shiraz University, Shiraz 71467-13565, Iran
| | - S Masoud Nabavizadeh
- Professor Rashidi Laboratory of Organometallic Chemistry, Department of Chemistry, College of Sciences, Shiraz University, Shiraz 71467-13565, Iran
| | - Nikolai Yu Kuznetsov
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Vavilov st. 28, 119991 Moscow, Russian Federation. .,A.V. Topchiev Institute of Petrochemical Synthesis, Leninsky Prospect 29, 119991, Moscow, Russian Federation
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6
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Tretyakov E, Fedyushin P, Bakuleva N, Korlyukov A, Dorovatovskii P, Gritsan N, Dmitriev A, Akyeva A, Syroeshkin M, Stass D, Zykin M, Efimov N, Luneau D. Series of Fluorinated Benzimidazole-Substituted Nitronyl Nitroxides: Synthesis, Structure, Acidity, Redox Properties, and Magnetostructural Correlations. J Org Chem 2022. [PMID: 36198196 DOI: 10.1021/acs.joc.2c01793] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A special series of nitronyl nitroxides was synthesized: 2-(benzimidazol-2'-yl)-4,4,5,5-tetramethyl-4,5-dihydro-1H-imidazole-3-oxide-1-oxyls mono-, di-, tri-, or tetrafluorinated on the benzene ring. The structure of all paramagnets was unambiguously confirmed by single-crystal X-ray diffraction. It was found that in crystals, the radicals are assembled into chains due to intermolecular H-bonds between the benzimidazole moiety (H-bond donor) and the nitronyl nitroxide group or benzimidazole ring (H-bond acceptor). The magnetic properties of nitronyl nitroxides depend on the type of binding of radicals by H-bonds. The magnetic motif of 4-fluoro-, 5-fluoro-, 4,6-difluoro-, 4,5,6-trifluoro-, 4,5,7-trifluoro-, and 4,5,6,7-tetrafluoro-derivatives, as well as the nonfluorinated compound, consists of ferromagnetic chains (J/kB ≈ 20-40 K) formed by the McConnell type I mechanism. In the 5,6-difluoro- and 4,5-difluoro-derivatives, the distances between the paramagnetic centers are large, as a result of which the exchange interactions are weak. According to cyclic voltammetry, paramagnets are oxidized reversibly, while their reduction is a quasi-reversible electron transfer (EC mechanism); experimental redox potentials of radicals correlate well with the calculated values. Quantum chemical assessment of the acidity of benzimidazolyl-substituted nitronyl nitroxides revealed that the introduction of fluorine atoms into the benzene ring enhances the acidity of the paramagnets by more than 5 orders of magnitude.
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Affiliation(s)
- Evgeny Tretyakov
- N. D. Zelinsky Institute of Organic Chemistry, Leninsky Prospect 47, Moscow119991, Russia
| | - Pavel Fedyushin
- N. D. Zelinsky Institute of Organic Chemistry, Leninsky Prospect 47, Moscow119991, Russia
| | - Nadejda Bakuleva
- N. D. Zelinsky Institute of Organic Chemistry, Leninsky Prospect 47, Moscow119991, Russia
| | - Alexander Korlyukov
- A. N. Nesmeyanov Institute of Organoelement Compounds, 28 Vavilov Street, Moscow119991, Russia
| | | | - Nina Gritsan
- V. V. Voevodsky Institute of Chemical Kinetics and Combustion, 3 Institutskaya Str., Novosibirsk630090, Russia
| | - Alexey Dmitriev
- V. V. Voevodsky Institute of Chemical Kinetics and Combustion, 3 Institutskaya Str., Novosibirsk630090, Russia
| | - Anna Akyeva
- N. D. Zelinsky Institute of Organic Chemistry, Leninsky Prospect 47, Moscow119991, Russia
| | - Mikhail Syroeshkin
- N. D. Zelinsky Institute of Organic Chemistry, Leninsky Prospect 47, Moscow119991, Russia
| | - Dmitri Stass
- V. V. Voevodsky Institute of Chemical Kinetics and Combustion, 3 Institutskaya Str., Novosibirsk630090, Russia
| | - Mikhail Zykin
- N. S. Kurnakov Institute of General and Inorganic Chemistry, Leninsky Prospect 31, Moscow119991, Russia
| | - Nikolay Efimov
- N. S. Kurnakov Institute of General and Inorganic Chemistry, Leninsky Prospect 31, Moscow119991, Russia
| | - Dominique Luneau
- Laboratoire des Multimatériaux et Interfaces (UMR 5615), Université Claude Bernard Lyon-1, Campus de La Doua, Villeurbanne Cedex69622, France
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7
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Cheplakova AM, Samsonenko DG, Lazarenko V, Dorovatovskii P, Zubavichus Y, Khrustalev VN, Rakhmanova MI, Fedin VP. Synthesis, supramolecular isomerism, and photoluminescence of scandium(III) complexes with tetrafluoroterephthalate ligand. CrystEngComm 2022. [DOI: 10.1039/d1ce01689j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Here we present a new family of seven Sc(III) complexes with tetrafluoroterephthalate ligand (tFBDC2−), having non-polymeric and polymeric 2D and 3D structures. These complexes are characterized by SC XRD, PXRD,...
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8
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Svetogorov R, Dorovatovskii P, Lazarenko V. High-resolution synchrotron powder diffraction with the use of a scanning 2D detector. Acta Crystallogr A Found Adv 2021. [DOI: 10.1107/s0108767321085251] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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9
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Vasil’kov A, Rubina M, Naumkin A, Buzin M, Dorovatovskii P, Peters G, Zubavichus Y. Cellulose-Based Hydrogels and Aerogels Embedded with Silver Nanoparticles: Preparation and Characterization. Gels 2021; 7:82. [PMID: 34287283 PMCID: PMC8293180 DOI: 10.3390/gels7030082] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2021] [Revised: 06/28/2021] [Accepted: 06/29/2021] [Indexed: 12/15/2022] Open
Abstract
The paper presents the preparation and characterization of novel composite materials based on microcrystalline cellulose (MCC) with silver nanoparticles (Ag NPs) in powder and gel forms. We use a promising synthetic conception to form the novel composite biomaterials. At first MCC was modified with colloidal solution of Ag NPs in isopropyl alcohol prepared via metal vapor synthesis. Then Ag-containing MCC powder was used as precursor for further preparation of the gels. The hydrogels were prepared by dissolving pristine MCC and MCC-based composite at low temperatures in aqueous alkali solution and gelation at elevated temperature. To prepare aerogels the drying in supercritical carbon dioxide was implemented. The as-prepared cellulose composites were characterized in terms of morphology, structure, and phase composition. Since many functional properties, including biological activity, in metal-composites are determined by the nature of the metal-to-polymer matrix interaction, the electronic state of the metal was carefully studied. The studied cellulose-based materials containing biologically active Ag NPs may be of interest for use as wound healing or water-purification materials.
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Affiliation(s)
- Alexander Vasil’kov
- A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 28 ul. Vavilova, 119991 Moscow, Russia; (A.V.); (A.N.); (M.B.)
| | - Margarita Rubina
- A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 28 ul. Vavilova, 119991 Moscow, Russia; (A.V.); (A.N.); (M.B.)
| | - Alexander Naumkin
- A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 28 ul. Vavilova, 119991 Moscow, Russia; (A.V.); (A.N.); (M.B.)
| | - Mikhail Buzin
- A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 28 ul. Vavilova, 119991 Moscow, Russia; (A.V.); (A.N.); (M.B.)
| | - Pavel Dorovatovskii
- National Research Centre “Kurchatov Institute”, 1 pl. Akademika Kurchatova, 123182 Moscow, Russia; (P.D.); (G.P.)
| | - Georgy Peters
- National Research Centre “Kurchatov Institute”, 1 pl. Akademika Kurchatova, 123182 Moscow, Russia; (P.D.); (G.P.)
| | - Yan Zubavichus
- Federal Research Center Boreskov Institute of Catalysis, Lavrentiev Ave. 5, 630090 Novosibirsk, Russia;
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10
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Aldoshin S, Ivakhnenko E, Shilov G, Tkachev V, Utenyshev A, Palii A, Dorovatovskii P, Kovalenko A, Morgunov R, Metelitsa A, Minkin V. Synthesis, crystal molecular structure, and magnetic characteristics of coordination polymers formed by Co(ii) diketonates with pentaheterocyclic triphenodioxazines. NEW J CHEM 2021. [DOI: 10.1039/d0nj05279e] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Heteropentacyclic triphenodioxazines are shown to be efficient bridging ligands in the synthesis of 1D coordination polymers, whose structure and stability depend on the electron accepting properties of the substituents in the diketonate moieties.
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Affiliation(s)
- Sergey Aldoshin
- Institute of Problems of Chemical Physics
- Russian Academy of Sciences
- 142432 Chernogolovka
- Russia
| | - Eugeny Ivakhnenko
- Institute of Physical and Organic Chemistry
- Southern Federal University
- 344090 Rostov on Don
- Russia
| | - Gennadii Shilov
- Institute of Problems of Chemical Physics
- Russian Academy of Sciences
- 142432 Chernogolovka
- Russia
| | - Valerii Tkachev
- Institute of Problems of Chemical Physics
- Russian Academy of Sciences
- 142432 Chernogolovka
- Russia
| | - Andrei Utenyshev
- Institute of Problems of Chemical Physics
- Russian Academy of Sciences
- 142432 Chernogolovka
- Russia
| | - Andreii Palii
- Institute of Problems of Chemical Physics
- Russian Academy of Sciences
- 142432 Chernogolovka
- Russia
| | | | - Anastasiia Kovalenko
- Institute of Physical and Organic Chemistry
- Southern Federal University
- 344090 Rostov on Don
- Russia
| | - Roman Morgunov
- Institute of Problems of Chemical Physics
- Russian Academy of Sciences
- 142432 Chernogolovka
- Russia
| | - Anatoly Metelitsa
- Institute of Physical and Organic Chemistry
- Southern Federal University
- 344090 Rostov on Don
- Russia
| | - Vladimir Minkin
- Institute of Physical and Organic Chemistry
- Southern Federal University
- 344090 Rostov on Don
- Russia
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11
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Nikovskiy I, Polezhaev A, Novikov V, Aleshin D, Pavlov A, Saffiulina E, Aysin R, Dorovatovskii P, Nodaraki L, Tuna F, Nelyubina Y. Cover Feature: Towards the Molecular Design of Spin‐Crossover Complexes of 2,6‐Bis(pyrazol‐3‐yl)pyridines (Chem. Eur. J. 25/2020). Chemistry 2020. [DOI: 10.1002/chem.202000466] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Igor Nikovskiy
- A.N. Nesmeyanov Institute of Organoelement CompoundsRussian Academy of Sciences Vavilova Str., 28 119991 Moscow Russia
| | - Alexander Polezhaev
- A.N. Nesmeyanov Institute of Organoelement CompoundsRussian Academy of Sciences Vavilova Str., 28 119991 Moscow Russia
- Bauman Moscow State Technical University 2nd Baumanskaya Str. 5 105005 Moscow Russia
| | - Valentin Novikov
- A.N. Nesmeyanov Institute of Organoelement CompoundsRussian Academy of Sciences Vavilova Str., 28 119991 Moscow Russia
- Moscow Institute of Physics and Technology Institutskiy per., 9, Dolgoprudny 141700 Moscow Region Russia
| | - Dmitry Aleshin
- A.N. Nesmeyanov Institute of Organoelement CompoundsRussian Academy of Sciences Vavilova Str., 28 119991 Moscow Russia
- Mendeleev University of Chemical Technology of Russia Miusskaya pl., 9 125047 Moscow Russia
| | - Alexander Pavlov
- A.N. Nesmeyanov Institute of Organoelement CompoundsRussian Academy of Sciences Vavilova Str., 28 119991 Moscow Russia
- Moscow Institute of Physics and Technology Institutskiy per., 9, Dolgoprudny 141700 Moscow Region Russia
| | - Elnara Saffiulina
- A.N. Nesmeyanov Institute of Organoelement CompoundsRussian Academy of Sciences Vavilova Str., 28 119991 Moscow Russia
- Mendeleev University of Chemical Technology of Russia Miusskaya pl., 9 125047 Moscow Russia
| | - Rinat Aysin
- A.N. Nesmeyanov Institute of Organoelement CompoundsRussian Academy of Sciences Vavilova Str., 28 119991 Moscow Russia
- Moscow Institute of Physics and Technology Institutskiy per., 9, Dolgoprudny 141700 Moscow Region Russia
| | - Pavel Dorovatovskii
- National Research Centre “Kurchatov Institute” Akademika Kurchatova pl., 1 123182 Moscow Russia
| | - Lydia Nodaraki
- University of Manchester Oxford Rd. Manchester M13 9PL UK
| | - Floriana Tuna
- University of Manchester Oxford Rd. Manchester M13 9PL UK
| | - Yulia Nelyubina
- A.N. Nesmeyanov Institute of Organoelement CompoundsRussian Academy of Sciences Vavilova Str., 28 119991 Moscow Russia
- Bauman Moscow State Technical University 2nd Baumanskaya Str. 5 105005 Moscow Russia
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12
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Nikovskiy I, Polezhaev A, Novikov V, Aleshin D, Pavlov A, Saffiulina E, Aysin R, Dorovatovskii P, Nodaraki L, Tuna F, Nelyubina Y. Towards the Molecular Design of Spin-Crossover Complexes of 2,6-Bis(pyrazol-3-yl)pyridines. Chemistry 2020; 26:5629-5638. [PMID: 31967374 DOI: 10.1002/chem.202000047] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2020] [Indexed: 01/27/2023]
Abstract
The molecular design of spin-crossover complexes relies on controlling the spin state of a transition metal ion by proper chemical modifications of the ligands. Herein, the first N,N'-disubstituted 2,6-bis(pyrazol-3-yl)pyridines (3-bpp) are reported that, against the common wisdom, induce a spin-crossover in otherwise high-spin iron(II) complexes by increasing the steric demand of a bulky substituent, an ortho-functionalized phenyl group. As N,N'-disubstituted 3-bpp complexes have no pendant NH groups that make their spin state extremely sensitive to the environment, the proposed ligand design, which may be applicable to isomeric 1-bpp or other families of popular bi-, tri- and higher denticity ligands, opens the way for their molecular design as spin-crossover compounds for future breakthrough applications.
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Affiliation(s)
- Igor Nikovskiy
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Vavilova Str., 28, 119991, Moscow, Russia
| | - Alexander Polezhaev
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Vavilova Str., 28, 119991, Moscow, Russia.,Bauman Moscow State Technical University, 2nd Baumanskaya Str. 5, 105005, Moscow, Russia
| | - Valentin Novikov
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Vavilova Str., 28, 119991, Moscow, Russia.,Moscow Institute of Physics and Technology, Institutskiy per., 9, Dolgoprudny, 141700, Moscow Region, Russia
| | - Dmitry Aleshin
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Vavilova Str., 28, 119991, Moscow, Russia.,Mendeleev University of Chemical Technology of Russia, Miusskaya pl., 9, 125047, Moscow, Russia
| | - Alexander Pavlov
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Vavilova Str., 28, 119991, Moscow, Russia.,Moscow Institute of Physics and Technology, Institutskiy per., 9, Dolgoprudny, 141700, Moscow Region, Russia
| | - Elnara Saffiulina
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Vavilova Str., 28, 119991, Moscow, Russia.,Mendeleev University of Chemical Technology of Russia, Miusskaya pl., 9, 125047, Moscow, Russia
| | - Rinat Aysin
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Vavilova Str., 28, 119991, Moscow, Russia.,Moscow Institute of Physics and Technology, Institutskiy per., 9, Dolgoprudny, 141700, Moscow Region, Russia
| | - Pavel Dorovatovskii
- National Research Centre "Kurchatov Institute", Akademika Kurchatova pl., 1, 123182, Moscow, Russia
| | - Lydia Nodaraki
- University of Manchester, Oxford Rd., Manchester, M13 9PL, UK
| | - Floriana Tuna
- University of Manchester, Oxford Rd., Manchester, M13 9PL, UK
| | - Yulia Nelyubina
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Vavilova Str., 28, 119991, Moscow, Russia.,Bauman Moscow State Technical University, 2nd Baumanskaya Str. 5, 105005, Moscow, Russia
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13
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Myasnikova L, Baidakova M, Drobot’ko V, Ivanchev S, Ivan’kova E, Radovanova E, Yagovkina M, Marikhin V, Zubavichus Y, Dorovatovskii P. The Crystalline Structure of Nascent Ultra High Molecular Weight Single Particles and Its Change on Heating, as Revealed by in-situ Synchrotron Studies. J MACROMOL SCI B 2019. [DOI: 10.1080/00222348.2019.1654692] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Liubov Myasnikova
- Department of Solid State Physics, Ioffe Institute of Russian Academy of Sciences, St.Petersburg, Russia
| | - Marina Baidakova
- Department of Solid State Physics, Ioffe Institute of Russian Academy of Sciences, St.Petersburg, Russia
| | - Valerii Drobot’ko
- Department of Phase Transformations, A. A.Galkin Physical-Technical Institute, Donetsk, Ukraine
| | - Sergei Ivanchev
- Department of Mechanics of Polymer and Composites, Institute of Macromolecular Compounds, Russian Academy of Sciences, St.Petersburg, Russia
- Department of Medical Physics, Peter the Great St.Petersburg Polytechnic University, St. Petersburg, Russia
| | - Elena Ivan’kova
- Department of Mechanics of Polymer and Composites, Institute of Macromolecular Compounds, Russian Academy of Sciences, St.Petersburg, Russia
- Department of Medical Physics, Peter the Great St.Petersburg Polytechnic University, St. Petersburg, Russia
| | - Elena Radovanova
- Department of Solid State Physics, Ioffe Institute of Russian Academy of Sciences, St.Petersburg, Russia
| | - Maria Yagovkina
- Department of Solid State Physics, Ioffe Institute of Russian Academy of Sciences, St.Petersburg, Russia
| | - Vyacheslav Marikhin
- Department of Solid State Physics, Ioffe Institute of Russian Academy of Sciences, St.Petersburg, Russia
| | - Yan Zubavichus
- Department of Synchrotron and Neutron Investigations, National Research Center «Kurchatov Institute», Moscow, Russia
- Department of Perspective Synchrotron Techniques, Boreskov Institute of Catalysis SB RAS, Novosibirsk, Russia
| | - Pavel Dorovatovskii
- Department of Synchrotron and Neutron Investigations, National Research Center «Kurchatov Institute», Moscow, Russia
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14
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Zaytsev V, Revutskaya E, Nikanorova T, Nikitina E, Dorovatovskii P, Khrustalev V, Yagafarov N, Zubkov F, Varlamov A. An Intramolecular Diels–Alder Furan (IMDAF) Approach towards the Synthesis of Isoindolo[2,1-a]quinazolines and Isoindolo[1,2-b]quinazolines. SYNTHESIS-STUTTGART 2017. [DOI: 10.1055/s-0036-1588812] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
An efficient approach to bridged pentacyclic nitrogen heterocycles via the tandem acylation/intramolecular Diels–Alder furan (IMDAF) reaction of 2-furylquinazolinones is described. Reactions of α,β-unsaturated acid anhydrides with 2-furyl-2,3-dihydroquinazolin-4-ones give 6b,9-epoxyisoindolo[2,1-a]quinazolines in average yields. In this case, the exo-IMDAF reactions proceed with excellent diastereoselectivity giving five stereogenic centers and three new rings in one synthetic step. Isomeric 2,4a-epoxyisoindolo[1,2-b]quinazolines are obtained by one-pot, three-component condensation reactions of allylamine, isatoic anhydride and furaldehydes involving the same IMDAF reaction as the key step. Some useful transformations including halogenation, hydrogenation, Prilezhaev epoxidation, and esterification of the synthesized epoxyisoindoloquinazolines are also demonstrated.
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Affiliation(s)
| | | | | | | | | | - Victor Khrustalev
- Inorganic Chemistry Department, RUDN University
- Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences
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15
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Sulyanov S, Dorovatovskii P, Boysen H. A simple approach to determine the polarization coefficient at synchrotron radiation stations. J Appl Crystallogr 2014. [DOI: 10.1107/s1600576714013909] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
A simple procedure for the measurement of the degree of linear polarization at a synchrotron radiation station is described. The diffraction pattern from a glass plate set perpendicular to the incident beam is registered using a two-dimensional area detector. The intensity variation along the azimuth angle ρ at a constant diffraction angle is fitted to the theoretical cos2ρ dependence. The results of measurements performed at a synchrotron radiation station with a CCD detector on the beam from a bending magnet are presented.
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