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Zakharenko AL, Dyrkheeva NS, Luzina OA, Filimonov AS, Mozhaitsev ES, Malakhova AA, Medvedev SP, Zakian SM, Salakhutdinov NF, Lavrik OI. Usnic Acid Derivatives Inhibit DNA Repair Enzymes Tyrosyl-DNA Phosphodiesterases 1 and 2 and Act as Potential Anticancer Agents. Genes (Basel) 2023; 14:1931. [PMID: 37895279 PMCID: PMC10606488 DOI: 10.3390/genes14101931] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2023] [Revised: 09/04/2023] [Accepted: 09/27/2023] [Indexed: 10/29/2023] Open
Abstract
Tyrosyl-DNA phosphodiesterase 1 and 2 (Tdp1 and Tdp2) are DNA repair enzymes that repair DNA damage caused by various agents, including anticancer drugs. Thus, these enzymes resist anticancer therapy and could be the reason for resistance to such widely used drugs such as topotecan and etoposide. In the present work, we found compounds capable of inhibiting both enzymes among derivatives of (-)-usnic acid. Both (+)- and (-)-enantiomers of compounds act equally effectively against Tdp1 with IC50 values in the range of 0.02-0.2 μM; only (-)-enantiomers inhibited Tdp2 with IC50 values in the range of 6-9 μM. Surprisingly, the compounds protect HEK293FT wild type cells from the cytotoxic effect of etoposide (CC50 3.0-3.9 μM in the presence of compounds and 2.4 μM the presence of DMSO) but potentiate it against Tdp2 knockout cells (CC50 1.2-1.6 μM in the presence of compounds against 2.3 μM in the presence of DMSO). We assume that the sensitizing effect of the compounds in the absence of Tdp2 is associated with the effective inhibition of Tdp1, which could take over the functions of Tdp2.
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Affiliation(s)
- Alexandra L. Zakharenko
- Institute of Chemical Biology and Fundamental Medicine, Siberian Branch of the Russian Academy of Sciences, 8 Akademika Lavrentieva Ave., 630090 Novosibirsk, Russia; (N.S.D.); (O.I.L.)
| | - Nadezhda S. Dyrkheeva
- Institute of Chemical Biology and Fundamental Medicine, Siberian Branch of the Russian Academy of Sciences, 8 Akademika Lavrentieva Ave., 630090 Novosibirsk, Russia; (N.S.D.); (O.I.L.)
| | - Olga A. Luzina
- N. N. Vorozhtsov Novosibirsk Institute of Organic Chemistry, Siberian Branch of the Russian Academy of Sciences, 9 Akademika Lavrentieva Ave., 630090 Novosibirsk, Russia; (O.A.L.); (A.S.F.); (E.S.M.); (N.F.S.)
| | - Aleksandr S. Filimonov
- N. N. Vorozhtsov Novosibirsk Institute of Organic Chemistry, Siberian Branch of the Russian Academy of Sciences, 9 Akademika Lavrentieva Ave., 630090 Novosibirsk, Russia; (O.A.L.); (A.S.F.); (E.S.M.); (N.F.S.)
| | - Evgenii S. Mozhaitsev
- N. N. Vorozhtsov Novosibirsk Institute of Organic Chemistry, Siberian Branch of the Russian Academy of Sciences, 9 Akademika Lavrentieva Ave., 630090 Novosibirsk, Russia; (O.A.L.); (A.S.F.); (E.S.M.); (N.F.S.)
| | - Anastasia A. Malakhova
- Federal Research Center Institute of Cytology and Genetics, Siberian Branch of the Russian Academy of Sciences, 10 Akademika Lavrentieva Ave., 630090 Novosibirsk, Russia; (A.A.M.); (S.P.M.); (S.M.Z.)
| | - Sergey P. Medvedev
- Federal Research Center Institute of Cytology and Genetics, Siberian Branch of the Russian Academy of Sciences, 10 Akademika Lavrentieva Ave., 630090 Novosibirsk, Russia; (A.A.M.); (S.P.M.); (S.M.Z.)
| | - Suren M. Zakian
- Federal Research Center Institute of Cytology and Genetics, Siberian Branch of the Russian Academy of Sciences, 10 Akademika Lavrentieva Ave., 630090 Novosibirsk, Russia; (A.A.M.); (S.P.M.); (S.M.Z.)
| | - Nariman F. Salakhutdinov
- N. N. Vorozhtsov Novosibirsk Institute of Organic Chemistry, Siberian Branch of the Russian Academy of Sciences, 9 Akademika Lavrentieva Ave., 630090 Novosibirsk, Russia; (O.A.L.); (A.S.F.); (E.S.M.); (N.F.S.)
| | - Olga I. Lavrik
- Institute of Chemical Biology and Fundamental Medicine, Siberian Branch of the Russian Academy of Sciences, 8 Akademika Lavrentieva Ave., 630090 Novosibirsk, Russia; (N.S.D.); (O.I.L.)
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Khudina OG, Burgart YV, Malkova NA, Shchegolkov EV, Krasnykh OP, Triandafilova GA, Malysheva KO, Solodnikov SY, Dubodel ES, Korolkova YV, Kozlov SA, Borisevich SS, Mozhaitsev ES, Saloutin VI. 5-Alkoxy-1-aryl-3-polyfluoroalkylpyrazoles with Antinociceptive Activity: Partial Agonists of TRPV1 Ion Channels. ChemMedChem 2023; 18:e202300063. [PMID: 37006199 DOI: 10.1002/cmdc.202300063] [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: 02/06/2023] [Revised: 03/30/2023] [Accepted: 03/31/2023] [Indexed: 04/04/2023]
Abstract
Chemoselective O-alkylation of 1-aryl-3-polyfluoroalkylpyrazol-5-oles under basic conditions resulted in a series of 5-alkoxypyrazoles (26 derivatives). They showed an acceptable ADME profile (in silico) and can be considered as drug-like. In experiments in vivo (CD-1 mice), it was found that the obtained compounds do not have toxic properties at a dose of more than 150 mg/kg (for most compounds at a dose of >300 mg/kg, and for lead compounds - >600 mg/kg). 22 Compounds from this series demonstrated from moderate to high analgesic effects (28-104 % at 1 h and 37-109 % at 2 h after administration) in vivo in the hot plate test (SD rats, 15 mg/kg, intraperitoneal (ip)). The lead compound was 4-([1-phenyl-3-(trifluoromethyl)pyrazol-5-yl]oxy)butan-1-ol, which not only increased the latent period in the hot plate test by 103 % at both measurement points but also showed a pronounced analgesic effect under conditions of capsaicin-induced nociception (CD-1 mice, 15 mg/kg, ip). According to molecular modeling, all synthesized compounds can interact with the TRPV1 ion channel. This biological target was confirmed in in vitro experiments on Chinese hamster ovary cells expressing rTRPV1. 5-Alkoxypyrazoles were partial agonists of the TRPV1 ion channel in various degree, and the most active was the same pyrazole as in in vivo tests.
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Affiliation(s)
- Olga G Khudina
- Ural Branch of the Russian Academy of Sciences, Postovsky Institute of Organic Synthesis, S. Kovalevskoi St., 22, Ekaterinburg, 620108, Russia
| | - Yanina V Burgart
- Ural Branch of the Russian Academy of Sciences, Postovsky Institute of Organic Synthesis, S. Kovalevskoi St., 22, Ekaterinburg, 620108, Russia
| | - Natalia A Malkova
- Ural Branch of the Russian Academy of Sciences, Postovsky Institute of Organic Synthesis, S. Kovalevskoi St., 22, Ekaterinburg, 620108, Russia
| | - Evgeny V Shchegolkov
- Ural Branch of the Russian Academy of Sciences, Postovsky Institute of Organic Synthesis, S. Kovalevskoi St., 22, Ekaterinburg, 620108, Russia
| | - Olga P Krasnykh
- Scientific and Educational Center for Applied Chemical-Biological Research, Perm National Research Polytechnic University, Komsomolsky Av., 29, Perm, 614990, Russia
| | - Galina A Triandafilova
- Scientific and Educational Center for Applied Chemical-Biological Research, Perm National Research Polytechnic University, Komsomolsky Av., 29, Perm, 614990, Russia
| | - Ksenia O Malysheva
- Scientific and Educational Center for Applied Chemical-Biological Research, Perm National Research Polytechnic University, Komsomolsky Av., 29, Perm, 614990, Russia
| | - Sergey Yu Solodnikov
- Scientific and Educational Center for Applied Chemical-Biological Research, Perm National Research Polytechnic University, Komsomolsky Av., 29, Perm, 614990, Russia
| | - Elisaveta S Dubodel
- The Russian Academy of Sciences, Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Miklukho-Maklaya St., 16/10, Moscow, 117997, Russia
| | - Yuliya V Korolkova
- The Russian Academy of Sciences, Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Miklukho-Maklaya St., 16/10, Moscow, 117997, Russia
| | - Sergey A Kozlov
- The Russian Academy of Sciences, Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Miklukho-Maklaya St., 16/10, Moscow, 117997, Russia
| | - Sophia S Borisevich
- The Russian Academy of Sciences, Ufa Institute of Chemistry, Octyabrya Av., 71, Ufa, 450078, Russia
| | - Evgenii S Mozhaitsev
- Siberian Branch of the Russian Academy of Sciences, N. N. Vorozhtsov Novosibirsk Institute of Organic Chemistry, Lavrentiev Av., 9, Novosibirsk, 630090, Russia
| | - Victor I Saloutin
- Ural Branch of the Russian Academy of Sciences, Postovsky Institute of Organic Synthesis, S. Kovalevskoi St., 22, Ekaterinburg, 620108, Russia
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Mozhaitsev ES, Suslov EV, Rastrepaeva DA, Yarovaya OI, Borisevich SS, Khamitov EM, Kolybalov DS, Arkhipov SG, Bormotov NI, Shishkina LN, Serova OA, Brunilin RV, Vernigora AA, Nawrozkij MB, Agafonov AP, Maksyutov RA, Volcho KP, Salakhutdinov NF. Structure-Based Design, Synthesis, and Biological Evaluation of the Cage-Amide Derived Orthopox Virus Replication Inhibitors. Viruses 2022; 15:29. [PMID: 36680072 PMCID: PMC9865139 DOI: 10.3390/v15010029] [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] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2022] [Accepted: 12/19/2022] [Indexed: 12/24/2022] Open
Abstract
Despite the fact that the variola virus is considered eradicated, the search for new small molecules with activity against orthopoxviruses remains an important task, especially in the context of recent outbreaks of monkeypox. As a result of this work, a number of amides of benzoic acids containing an adamantane fragment were obtained. Most of the compounds demonstrated activity against vaccinia virus, with a selectivity index SI = 18,214 for the leader compound 18a. The obtained derivatives also demonstrated activity against murine pox (250 ≤ SI ≤ 6071) and cowpox (125 ≤ SI ≤ 3036). A correlation was obtained between the IC50 meanings and the binding energy to the assumed biological target, the p37 viral protein with R2 = 0.60.
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Affiliation(s)
- Evgenii S. Mozhaitsev
- Department of Medicinal Chemistry, N.N. Vorozhtsov Novosibirsk Institute of Organic Chemistry SB RAS, Lavrentyev Ave. 9, 630090 Novosibirsk, Russia
| | - Evgeniy V. Suslov
- Department of Medicinal Chemistry, N.N. Vorozhtsov Novosibirsk Institute of Organic Chemistry SB RAS, Lavrentyev Ave. 9, 630090 Novosibirsk, Russia
| | - Daria A. Rastrepaeva
- Department of Medicinal Chemistry, N.N. Vorozhtsov Novosibirsk Institute of Organic Chemistry SB RAS, Lavrentyev Ave. 9, 630090 Novosibirsk, Russia
| | - Olga I. Yarovaya
- Department of Medicinal Chemistry, N.N. Vorozhtsov Novosibirsk Institute of Organic Chemistry SB RAS, Lavrentyev Ave. 9, 630090 Novosibirsk, Russia
| | - Sophia S. Borisevich
- Laboratory of Chemical Physics, Laboratory of Physical and Chemical Methods of Analysis, Ufa Institute of Chemistry Ufa Federal Research Center, 71 Pr. Oktyabrya, 450078 Ufa, Russia
| | - Edward M. Khamitov
- Laboratory of Chemical Physics, Laboratory of Physical and Chemical Methods of Analysis, Ufa Institute of Chemistry Ufa Federal Research Center, 71 Pr. Oktyabrya, 450078 Ufa, Russia
| | - Dmitry S. Kolybalov
- Synchrotron Radiation Facility SKIF, G.K. Boreskov Institute of Catalysis SB RAS, 630559 Koltsovo, Russia
- Scientific Educational Center “Institute of Chemical Technology”, Novosibirsk State University, 630090 Novosibirsk, Russia
| | - Sergey G. Arkhipov
- Synchrotron Radiation Facility SKIF, G.K. Boreskov Institute of Catalysis SB RAS, 630559 Koltsovo, Russia
- Scientific Educational Center “Institute of Chemical Technology”, Novosibirsk State University, 630090 Novosibirsk, Russia
| | - Nikolai I. Bormotov
- State Research Center of Virology and Biotechnology VECTOR, Rospotrebnadzor, 630559 Koltsovo, Russia
| | - Larisa N. Shishkina
- State Research Center of Virology and Biotechnology VECTOR, Rospotrebnadzor, 630559 Koltsovo, Russia
| | - Olga A. Serova
- State Research Center of Virology and Biotechnology VECTOR, Rospotrebnadzor, 630559 Koltsovo, Russia
| | - Roman V. Brunilin
- Department of Analytical, Physical Chemistry and Polymer Chemistry and Physics, Department of Organic Chemistry, Volgograd State Technical University Lenina, Avenue 28, 400005 Volgograd, Russia
| | - Andrey A. Vernigora
- Department of Analytical, Physical Chemistry and Polymer Chemistry and Physics, Department of Organic Chemistry, Volgograd State Technical University Lenina, Avenue 28, 400005 Volgograd, Russia
| | - Maxim B. Nawrozkij
- Center of Translational Medicine, Sirius University of Science and Technology, Olympic Avenue 1, Krasnodar Krai, 354340 Sirius, Russia
| | - Alexander P. Agafonov
- State Research Center of Virology and Biotechnology VECTOR, Rospotrebnadzor, 630559 Koltsovo, Russia
| | - Rinat A. Maksyutov
- State Research Center of Virology and Biotechnology VECTOR, Rospotrebnadzor, 630559 Koltsovo, Russia
| | - Konstantin P. Volcho
- Department of Medicinal Chemistry, N.N. Vorozhtsov Novosibirsk Institute of Organic Chemistry SB RAS, Lavrentyev Ave. 9, 630090 Novosibirsk, Russia
| | - Nariman F. Salakhutdinov
- Department of Medicinal Chemistry, N.N. Vorozhtsov Novosibirsk Institute of Organic Chemistry SB RAS, Lavrentyev Ave. 9, 630090 Novosibirsk, Russia
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Reshetnikov DV, Ivanov ID, Baev DS, Rybalova TV, Mozhaitsev ES, Patrushev SS, Vavilin VA, Tolstikova TG, Shults EE. Design, Synthesis and Assay of Novel Methylxanthine-Alkynylmethylamine Derivatives as Acetylcholinesterase Inhibitors. Molecules 2022; 27:molecules27248787. [PMID: 36557921 PMCID: PMC9788520 DOI: 10.3390/molecules27248787] [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] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/02/2022] [Revised: 12/01/2022] [Accepted: 12/07/2022] [Indexed: 12/14/2022]
Abstract
Xanthine derivatives have been a great area of interest for the development of potent bioactive agents. Thirty-eight methylxanthine derivatives as acetylcholinesterase inhibitors (AChE) were designed and synthesized. Suzuki-Miyaura cross-coupling reactions of 8-chlorocaffeine with aryl(hetaryl)boronic acids, the CuAAC reaction of 8-ethynylcaffeine with several azides, and the copper(I) catalyzed one-pot three-component reaction (A3-coupling) of 8-ethynylcaffeine, 1-(prop-2-ynyl)-, or 7-(prop-2-ynyl)-dimethylxanthines with formaldehyde and secondary amines were the main approaches for the synthesis of substituted methylxanthine derivatives (yield 53-96%). The bioactivity of all new compounds was evaluated by Ellman's method, and the results showed that most of the synthesized compounds displayed good and moderate acetylcholinesterase (AChE) inhibitory activities in vitro. The structure-activity relationships were also discussed. The data revealed that compounds 53, 59, 65, 66, and 69 exhibited the most potent inhibitory activity against AChE with IC50 of 0.25, 0.552, 0.089, 0.746, and 0.121 μM, respectively. The binding conformation and simultaneous interaction modes were further clarified by molecular docking studies.
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Affiliation(s)
- Danila V. Reshetnikov
- N.N. Vorozhtsov Novosibirsk Institute of Organic Chemistry, Siberian Branch of the Russian Academy of Sciences, Lavrentyev Ave, 9, 630090 Novosibirsk, Russia
| | - Igor D. Ivanov
- The Federal Research Center Institute of Molecular Biology and Biophysics, Timakov Str., 2/12, 630117 Novosibirsk, Russia
| | - Dmitry S. Baev
- N.N. Vorozhtsov Novosibirsk Institute of Organic Chemistry, Siberian Branch of the Russian Academy of Sciences, Lavrentyev Ave, 9, 630090 Novosibirsk, Russia
| | - Tatyana V. Rybalova
- N.N. Vorozhtsov Novosibirsk Institute of Organic Chemistry, Siberian Branch of the Russian Academy of Sciences, Lavrentyev Ave, 9, 630090 Novosibirsk, Russia
| | - Evgenii S. Mozhaitsev
- N.N. Vorozhtsov Novosibirsk Institute of Organic Chemistry, Siberian Branch of the Russian Academy of Sciences, Lavrentyev Ave, 9, 630090 Novosibirsk, Russia
| | - Sergey S. Patrushev
- N.N. Vorozhtsov Novosibirsk Institute of Organic Chemistry, Siberian Branch of the Russian Academy of Sciences, Lavrentyev Ave, 9, 630090 Novosibirsk, Russia
- Novosibirsk State University, Pirogova Str., 1, 630090 Novosibirsk, Russia
| | - Valentin A. Vavilin
- The Federal Research Center Institute of Molecular Biology and Biophysics, Timakov Str., 2/12, 630117 Novosibirsk, Russia
- Novosibirsk State University, Pirogova Str., 1, 630090 Novosibirsk, Russia
| | - Tatyana G. Tolstikova
- N.N. Vorozhtsov Novosibirsk Institute of Organic Chemistry, Siberian Branch of the Russian Academy of Sciences, Lavrentyev Ave, 9, 630090 Novosibirsk, Russia
- Novosibirsk State University, Pirogova Str., 1, 630090 Novosibirsk, Russia
| | - Elvira E. Shults
- N.N. Vorozhtsov Novosibirsk Institute of Organic Chemistry, Siberian Branch of the Russian Academy of Sciences, Lavrentyev Ave, 9, 630090 Novosibirsk, Russia
- Correspondence: ; Tel.: +7-(383)-3308533
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Mozhaitsev ES, Zakharenko AL, Suslov EV, Korchagina DV, Zakharova OD, Vasil'eva IA, Chepanova AA, Black E, Patel J, Chand R, Reynisson J, Leung IKH, Volcho KP, Salakhutdinov NF, Lavrik OI. Novel Inhibitors of DNA Repair Enzyme TDP1 Combining Monoterpenoid and Adamantane Fragments. Anticancer Agents Med Chem 2020; 19:463-472. [PMID: 30523770 DOI: 10.2174/1871520619666181207094243] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [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: 06/26/2018] [Revised: 11/06/2018] [Accepted: 11/20/2018] [Indexed: 01/30/2023]
Abstract
BACKGROUND AND OBJECTIVE The DNA repair enzyme tyrosyl-DNA-phosphodiesterase 1 (TDP1) is a current inhibition target to improve the efficacy of cancer chemotherapy. Previous studies showed that compounds combining adamantane and monoterpenoid fragments are active against TDP1 enzyme. This investigation is focused on the synthesis of monoterpenoid derived esters of 1-adamantane carboxylic acid as TDP1 inhibitors. METHODS New esters were synthesized by the interaction between 1-adamantane carboxylic acid chloride and monoterpenoid alcohols. The esters were tested against TDP1 and its binding to the enzyme was modeling. RESULTS 13 Novel ester-based TDP1 inhibitors were synthesized with yields of 21-94%; of these, nine esters had not been previously described. A number of the esters were found to inhibit TDP1, with IC50 values ranging from 0.86-4.08 µM. Molecular modelling against the TDP1 crystal structure showed a good fit of the active esters in the catalytic pocket, explaining their potency. A non-toxic dose of ester, containing a 3,7- dimethyloctanol fragment, was found to enhance the cytotoxic effect of topotecan, a clinically used anti-cancer drug, against the human lung adenocarcinoma cell line A549. CONCLUSION The esters synthesized were found to be active against TDP1 in the lower micromolar concentration range, with these findings being corroborated by molecular modeling. Simultaneous action of the ester synthesized from 3,7-dimethyloctanol-1 and topotecan revealed a synergistic effect.
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Affiliation(s)
- Evgenii S Mozhaitsev
- N.N. Vorozhtsov Novosibirsk Institute of Organic Chemistry, Siberian Branch of Russian Academy of Sciences, 9, Lavrentiev Ave., Novosibirsk, 630090, Russian Federation
| | - Alexandra L Zakharenko
- Institute of Chemical Biology and Fundamental Medicine, Siberian Branch of Russian Academy of Sciences, 8, Lavrentiev Ave., Novosibirsk, 630090, Russian Federation
| | - Evgeniy V Suslov
- N.N. Vorozhtsov Novosibirsk Institute of Organic Chemistry, Siberian Branch of Russian Academy of Sciences, 9, Lavrentiev Ave., Novosibirsk, 630090, Russian Federation
| | - Dina V Korchagina
- N.N. Vorozhtsov Novosibirsk Institute of Organic Chemistry, Siberian Branch of Russian Academy of Sciences, 9, Lavrentiev Ave., Novosibirsk, 630090, Russian Federation
| | - Olga D Zakharova
- Institute of Chemical Biology and Fundamental Medicine, Siberian Branch of Russian Academy of Sciences, 8, Lavrentiev Ave., Novosibirsk, 630090, Russian Federation
| | - Inna A Vasil'eva
- Institute of Chemical Biology and Fundamental Medicine, Siberian Branch of Russian Academy of Sciences, 8, Lavrentiev Ave., Novosibirsk, 630090, Russian Federation
| | - Arina A Chepanova
- Institute of Chemical Biology and Fundamental Medicine, Siberian Branch of Russian Academy of Sciences, 8, Lavrentiev Ave., Novosibirsk, 630090, Russian Federation
| | - Ellena Black
- School of Chemical Sciences, The University of Auckland, Private Bag 92019, Victoria Street West, Auckland 1142, New Zealand
| | - Jinal Patel
- School of Chemical Sciences, The University of Auckland, Private Bag 92019, Victoria Street West, Auckland 1142, New Zealand
| | - Raina Chand
- School of Chemical Sciences, The University of Auckland, Private Bag 92019, Victoria Street West, Auckland 1142, New Zealand
| | - Jóhannes Reynisson
- School of Chemical Sciences, The University of Auckland, Private Bag 92019, Victoria Street West, Auckland 1142, New Zealand
| | - Ivanhoe K H Leung
- School of Chemical Sciences, The University of Auckland, Private Bag 92019, Victoria Street West, Auckland 1142, New Zealand
| | - Konstantin P Volcho
- N.N. Vorozhtsov Novosibirsk Institute of Organic Chemistry, Siberian Branch of Russian Academy of Sciences, 9, Lavrentiev Ave., Novosibirsk, 630090, Russian Federation.,Novosibirsk State University, 2, Pirogova Str., Novosibirsk, 630090, Russian Federation
| | - Nariman F Salakhutdinov
- N.N. Vorozhtsov Novosibirsk Institute of Organic Chemistry, Siberian Branch of Russian Academy of Sciences, 9, Lavrentiev Ave., Novosibirsk, 630090, Russian Federation.,Novosibirsk State University, 2, Pirogova Str., Novosibirsk, 630090, Russian Federation
| | - Olga I Lavrik
- Institute of Chemical Biology and Fundamental Medicine, Siberian Branch of Russian Academy of Sciences, 8, Lavrentiev Ave., Novosibirsk, 630090, Russian Federation.,Novosibirsk State University, 2, Pirogova Str., Novosibirsk, 630090, Russian Federation
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