1
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Alavandimat NH, Bharamawadeyar S, Marulappa VT, Sureshbabu VV. Convenient Synthesis of Selenomethylene[
ψ
(CH
2
Se)] Unnatural Amino Acids and Dipeptidomimetics. ChemistrySelect 2023. [DOI: 10.1002/slct.202203139] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
| | - Swetha Bharamawadeyar
- Peptide Research Laboratory Department of Studies in Chemistry Jnana Bharathi Bangalore University Bengaluru 560056 India
| | | | - Vommina Venkata Sureshbabu
- Peptide Research Laboratory Department of Studies in Chemistry Jnana Bharathi Bangalore University Bengaluru 560056 India
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2
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Kuznetsov YP, Rasskazova EV, Pitushkin DA, Eshtukov AV, Vasipov VV, Burmistrov VV, Butov GM. Synthesis and Properties of N,N′-Disubstituted Ureas and Their Isosteric Analogs Containing Polycyclic Fragments: XI. 1-[(Adamantan-1 yl)alkyl]-3-arylselenoureas. RUSSIAN JOURNAL OF ORGANIC CHEMISTRY 2021. [DOI: 10.1134/s1070428021070022] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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3
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Abdelraheem EMM, Goodwin I, Shaabani S, de Haan MP, Kurpiewska K, Kalinowska-Tłuścik J, Dömling A. 'Atypical Ugi' tetrazoles. Chem Commun (Camb) 2020; 56:1799-1802. [PMID: 31950120 DOI: 10.1039/c9cc09194g] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Amino acid-derived isocyano amides together with TMSN3, oxocomponents and 1° or 2° amines are common substrates in the Ugi tetrazole reaction. We surprisingly found that combining these substrates gives two different constitutional isomeric Ugi products A and B. A is the expected classical Ugi product whereas B is an isomeric product ('atypical Ugi') of the same molecular weight with the tetrazole heterocycle migrated to a different position. We synthesized, separated and characterized 22 different isomorphic examples of the two constitutional isomers of the Ugi reaction to unambiguously prove the formation of A and B. Mechanistic studies resulted in a proposed mechanism for the concomitant formation of A and B.
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Affiliation(s)
- Eman M M Abdelraheem
- Department of Drug Design, University of Groningen, A. Deusinglaan 1, 9713 AV Groningen, The Netherlands.
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4
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Roopesh Kumar L, Sagar NR, Divya K, Madhu C, Sureshbabu VV. Synthesis of an amino phosphinodiselenoic acid ester and β-amino diselenides employing P 2Se 5. NEW J CHEM 2020. [DOI: 10.1039/d0nj00012d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Protic solvents furnished amino phosphinodiselenoic acid esters, whereas β-amino diselenides were obtained exclusively when reactions performed in polar aprotic solvents.
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Affiliation(s)
- L. Roopesh Kumar
- Peptide Research Laboratory
- Department of Studies in Chemistry
- Bangalore University
- Bangalore-560 056
- India
| | - N. R. Sagar
- Peptide Research Laboratory
- Department of Studies in Chemistry
- Bangalore University
- Bangalore-560 056
- India
| | - K. Divya
- Peptide Research Laboratory
- Department of Studies in Chemistry
- Bangalore University
- Bangalore-560 056
- India
| | - C. Madhu
- Peptide Research Laboratory
- Department of Studies in Chemistry
- Bangalore University
- Bangalore-560 056
- India
| | - Vommina V Sureshbabu
- Peptide Research Laboratory
- Department of Studies in Chemistry
- Bangalore University
- Bangalore-560 056
- India
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5
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Zakrzewski J, Huras B, Kiełczewska A, Krawczyk M, Hupko J, Jaszczuk K. Reactions of Nitroxides, Part 17. Synthesis, Fungistatic and Bacteriostatic Activity of Novel Five- and Six-Membered Nitroxyl Selenoureas and Selenocarbamates. Molecules 2019; 24:E2457. [PMID: 31277425 PMCID: PMC6650962 DOI: 10.3390/molecules24132457] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2019] [Revised: 06/23/2019] [Accepted: 07/02/2019] [Indexed: 11/16/2022] Open
Abstract
The reactions of 3-isoselenocyanato-2,2,5,5-tetramethylpyrrolidine-1-oxyl, 3-isoselenocyanatomethyl-2,2,5,5-tetramethyl-3-pyrrolidine-1-oxyl, and 4-isoselenocyanato-2,2,6,6-tetramethylpiperidine-1-oxyl with selected amines and alcohols give the corresponding novel nitroxyl selenoureas and selenocarbamates, all bearing a nitroxyl moiety. Synthesized selenoureas and selenocarbamates show significant activity against pathogenic fungi and bacteria. In contrast to piperidine nitroxides, pyrrolidine, five-membered nitroxyl selenoureas and selenocarbamates show excellent antifungal and antibacterial activity against pathogenic fungi and bacteria, respectively.
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Affiliation(s)
- Jerzy Zakrzewski
- Łukasiewicz Research Network-Institute of Industrial Organic Chemistry, Annopol 6, 03-236 Warsaw, Poland.
| | - Bogumiła Huras
- Łukasiewicz Research Network-Institute of Industrial Organic Chemistry, Annopol 6, 03-236 Warsaw, Poland
| | - Anna Kiełczewska
- Łukasiewicz Research Network-Institute of Industrial Organic Chemistry, Annopol 6, 03-236 Warsaw, Poland
| | - Maria Krawczyk
- Łukasiewicz Research Network-Institute of Industrial Organic Chemistry, Annopol 6, 03-236 Warsaw, Poland
| | - Jarosław Hupko
- Łukasiewicz Research Network-Institute of Industrial Organic Chemistry, Annopol 6, 03-236 Warsaw, Poland
| | - Katarzyna Jaszczuk
- Łukasiewicz Research Network-Institute of Industrial Organic Chemistry, Annopol 6, 03-236 Warsaw, Poland
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6
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Vyhivskyi O, Dlin EA, Finko AV, Stepanova SP, Ivanenkov YA, Skvortsov DA, Mironov AV, Zyk NV, Majouga AG, Beloglazkina EK. Copper-Promoted C-Se Cross-Coupling of 2-Selenohydantoins with Arylboronic Acids in an Open Flask. ACS COMBINATORIAL SCIENCE 2019; 21:456-464. [PMID: 31009196 DOI: 10.1021/acscombsci.9b00021] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
The modification of Chan-Lam-Evans cross-coupling reaction for the selective Se-arylation of 2-selenohydantoins under base-free mild conditions via aryl boronic acids is described herein. This approach was used to synthesize novel 5-arylidene-3-substituted-2-(arylselanyl)-imidazoline-4-ones with high yields. The anticancer activity of the final compounds was evaluated in vitro against different cancer cells, and thus, the possibility of 5-arylidene-3-substituted-2-(arylselanyl)-imidazoline-4-ones successful application as cytotoxic agents was demonstrated.
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Affiliation(s)
- Oleksandr Vyhivskyi
- Moscow State University, Chemistry Department, Leninskie Gory, Building 1/3, GSP-1, Moscow 119991, Russia
| | - Egor A. Dlin
- Moscow State University, Chemistry Department, Leninskie Gory, Building 1/3, GSP-1, Moscow 119991, Russia
| | - Alexander V. Finko
- Moscow State University, Chemistry Department, Leninskie Gory, Building 1/3, GSP-1, Moscow 119991, Russia
| | - Saiyyna P. Stepanova
- Moscow State University, Chemistry Department, Leninskie Gory, Building 1/3, GSP-1, Moscow 119991, Russia
| | - Yan A. Ivanenkov
- Moscow State University, Chemistry Department, Leninskie Gory, Building 1/3, GSP-1, Moscow 119991, Russia
- National University of Science and Technology (MISiS), Leninskii pr., 4, Moscow 119049, Russia
- Moscow Institute of Physics and Technology (MIPT), Dolgoprudny, Institutsky per. 9, Moscow 141701, Russia
| | - Dmitry A. Skvortsov
- Moscow State University, Chemistry Department, Leninskie Gory, Building 1/3, GSP-1, Moscow 119991, Russia
| | - Andrei V. Mironov
- Moscow State University, Chemistry Department, Leninskie Gory, Building 1/3, GSP-1, Moscow 119991, Russia
| | - Nikolay V. Zyk
- Moscow State University, Chemistry Department, Leninskie Gory, Building 1/3, GSP-1, Moscow 119991, Russia
| | - Alexander G. Majouga
- Moscow State University, Chemistry Department, Leninskie Gory, Building 1/3, GSP-1, Moscow 119991, Russia
- National University of Science and Technology (MISiS), Leninskii pr., 4, Moscow 119049, Russia
- D. Mendeleev University of Chemical Technology of Russia, Miusskaya pl. 9, 125047 Moscow, Russia
| | - Elena K. Beloglazkina
- Moscow State University, Chemistry Department, Leninskie Gory, Building 1/3, GSP-1, Moscow 119991, Russia
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7
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Vishwanatha TM, Kurpiewska K, Kalinowska-Tłuścik J, Dömling A. Cysteine Isocyanide in Multicomponent Reaction: Synthesis of Peptido-Mimetic 1,3-Azoles. J Org Chem 2017; 82:9585-9594. [PMID: 28817272 PMCID: PMC5603900 DOI: 10.1021/acs.joc.7b01615] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
![]()
An alternative approach toward the
simple and robust synthesis
of highly substituted peptidic thiazole derivatives using Ugi-multicomponent
reaction (U-MCR) is described. Thus, we introduced the enantiopure
(R)-2-methyl-2-isocyano-3-(tritylthio)propanoate
as a novel class of isocyanide in MCR. This bifunctional isocyanide
was found to undergo mild cyclodehydration to afford thiazole containing
peptidomimetics in a short synthetic sequence. Several examples of
bis-heterocyclic rings were also synthesized through the proper choice
of the aldehyde component in the U-4CR. The method opens a wide range
of applications toward the synthesis of nonribosomal natural products
and other bioactive compounds.
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Affiliation(s)
- Thimmalapura M Vishwanatha
- University of Groningen , Department of Drug Design, A. Deusinglaan 1, 9713 AV Groningen, The Netherlands
| | - Katarzyna Kurpiewska
- Jagiellonian University , Department of Crystal Chemistry and Crystal Physics, Ingardena 3, 30-060 Krakow, Poland
| | - Justyna Kalinowska-Tłuścik
- Jagiellonian University , Department of Crystal Chemistry and Crystal Physics, Ingardena 3, 30-060 Krakow, Poland
| | - Alexander Dömling
- University of Groningen , Department of Drug Design, A. Deusinglaan 1, 9713 AV Groningen, The Netherlands
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8
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Vishwanatha TM, Bergamaschi E, Dömling A. Sulfur-Switch Ugi Reaction for Macrocyclic Disulfide-Bridged Peptidomimetics. Org Lett 2017; 19:3195-3198. [PMID: 28581763 PMCID: PMC5477004 DOI: 10.1021/acs.orglett.7b01324] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
![]()
A general
strategy is introduced for the efficient synthetic access
of disulfide linked artificial macrocycles via a Ugi four-component
reaction (U4CR) followed by oxidative cyclization. The double-mercapto
input is proposed for use in the Ugi reaction, thereby yielding all
six topologically possible combinations. The protocol is convergent
and short and enables the production of novel disulfide peptidomimetics
in a highly general fashion.
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Affiliation(s)
- Thimmalapura M Vishwanatha
- Department of Drug Design, University of Groningen , A. Deusinglaan 1, 9713 AV Groningen, The Netherlands
| | - Enrico Bergamaschi
- Department of Drug Design, University of Groningen , A. Deusinglaan 1, 9713 AV Groningen, The Netherlands
| | - Alexander Dömling
- Department of Drug Design, University of Groningen , A. Deusinglaan 1, 9713 AV Groningen, The Netherlands
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9
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Joy S, Sureshbabu VV, Periyasamy G. Density functional theoretical studies on photoswitching and charge migration dynamics of thio and selenoureidopeptides. J PHYS ORG CHEM 2017. [DOI: 10.1002/poc.3693] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Sherin Joy
- Department of Chemistry; Bangalore University; Bangalore Karnataka India
| | | | - Ganga Periyasamy
- Department of Chemistry; Bangalore University; Bangalore Karnataka India
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10
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Prabhu G, Santhosh L, Nagendra G, Panduranga V, Sureshbabu VV. Molecular-Iodine-Mediated, Efficient One-Pot Synthesis of 2-Iminohydantoins and 2-Amino-1H-imidazol-4(5H)-ones by Cyclodeselenization of Selenourea-Tethered Amides/Peptides. ChemistrySelect 2017. [DOI: 10.1002/slct.201601858] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Girish Prabhu
- Department of Studies in Chemistry; Central College Campus; Bangalore University, Dr. B. R. Ambedkar Veedhi; Bangalore 560001 India
| | - L. Santhosh
- Department of Studies in Chemistry; Central College Campus; Bangalore University, Dr. B. R. Ambedkar Veedhi; Bangalore 560001 India
| | - G. Nagendra
- Department of Studies in Chemistry; Central College Campus; Bangalore University, Dr. B. R. Ambedkar Veedhi; Bangalore 560001 India
| | - Veladi Panduranga
- Department of Studies in Chemistry; Central College Campus; Bangalore University, Dr. B. R. Ambedkar Veedhi; Bangalore 560001 India
| | - Vommina V. Sureshbabu
- Department of Studies in Chemistry; Central College Campus; Bangalore University, Dr. B. R. Ambedkar Veedhi; Bangalore 560001 India
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11
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Santhosh L, Srinivasulu C, Durgamma S, Prabhu G, Sureshbabu VV. Facile one-pot synthesis of 2-amino-1,3,4-oxadiazole tethered peptidomimetics by molecular-iodine-mediated cyclodeselenization. NEW J CHEM 2017. [DOI: 10.1039/c7nj02278f] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Mild and highly efficient I2 and Et3N aided cyclodeselenization of in situ generated selenosemicarbazide is described to obtain 2-amino-1,3,4-oxadiazole peptidomimetics.
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Affiliation(s)
- L. Santhosh
- Peptide Research Laboratory
- Department of Studies in Chemistry
- Central College Campus
- Dr B. R. AmbedkarVeedhi
- Bangalore University
| | - C. Srinivasulu
- Peptide Research Laboratory
- Department of Studies in Chemistry
- Central College Campus
- Dr B. R. AmbedkarVeedhi
- Bangalore University
| | - S. Durgamma
- Peptide Research Laboratory
- Department of Studies in Chemistry
- Central College Campus
- Dr B. R. AmbedkarVeedhi
- Bangalore University
| | - Girish Prabhu
- Peptide Research Laboratory
- Department of Studies in Chemistry
- Central College Campus
- Dr B. R. AmbedkarVeedhi
- Bangalore University
| | - Vommina V. Sureshbabu
- Peptide Research Laboratory
- Department of Studies in Chemistry
- Central College Campus
- Dr B. R. AmbedkarVeedhi
- Bangalore University
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12
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Fukuda T, Wagatsuma H, Kominami Y, Nogata Y, Yoshimura E, Chiba K, Kitano Y. Anti-barnacle Activity of Isocyanides Derived from Amino Acids. Chem Biodivers 2016; 13:1502-1510. [PMID: 27449975 DOI: 10.1002/cbdv.201600063] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2016] [Accepted: 06/10/2016] [Indexed: 01/23/2023]
Abstract
Creation of new potent antifouling active compounds is important for the development of environmentally friendly antifouling agents. Fifteen isocyanide congeners derived from proteinogenic amino acids were synthesized, and the antifouling activity and toxicity of these compounds against cypris larvae of the barnacle Balanus amphitrite were investigated. All synthesized amino acid-isocyanides exhibited potent anti-barnacle activity with EC50 values of 0.07 - 10.34 μg/ml after 120 h exposure without significant toxicity. In addition, seven compounds showed more than 95% settlement inhibition of the cypris larvae at 10 μg/ml after 120 h exposure without any mortality observed. Considering their structure, these amino acid-isocyanides would eventually be biodegraded to their original nontoxic amino acids. These should be useful for further research focused on the development of environmentally friendly antifoulants.
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Affiliation(s)
- Takuya Fukuda
- Laboratory of Bio-organic Chemistry, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu-shi, Tokyo, 183-8509, Japan
| | - Hideki Wagatsuma
- Laboratory of Bio-organic Chemistry, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu-shi, Tokyo, 183-8509, Japan
| | - Yoshifumi Kominami
- Laboratory of Bio-organic Chemistry, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu-shi, Tokyo, 183-8509, Japan
| | - Yasuyuki Nogata
- Environmental Science Research Laboratory, Central Research Institute of Electric Power Industry, 1646 Abiko, Abiko-shi, Chiba, 270-1194, Japan
| | | | - Kazuhiro Chiba
- Laboratory of Bio-organic Chemistry, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu-shi, Tokyo, 183-8509, Japan
| | - Yoshikazu Kitano
- Laboratory of Bio-organic Chemistry, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu-shi, Tokyo, 183-8509, Japan
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13
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Ivanenkov YA, Veselov MS, Rezekin IG, Skvortsov DA, Sandulenko YB, Polyakova MV, Bezrukov DS, Vasilevsky SV, Kukushkin ME, Moiseeva AA, Finko AV, Koteliansky VE, Klyachko NL, Filatova LA, Beloglazkina EK, Zyk NV, Majouga AG. Synthesis, isomerization and biological activity of novel 2-selenohydantoin derivatives. Bioorg Med Chem 2016; 24:802-11. [PMID: 26780833 DOI: 10.1016/j.bmc.2015.12.050] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2015] [Revised: 12/25/2015] [Accepted: 12/31/2015] [Indexed: 11/16/2022]
Abstract
A set of novel selenohydantoins were synthesized via a convenient and versatile approach involving the reaction of isoselenocyanates with various amines. We also revealed an unexpected Z→E isomerization of pyridin-2-yl-substituted selenohydantoins in the presence of Cu(2+) cations. The detailed mechanism of this transformation was suggested on the basis of quantum-chemical calculations, and the key role of Cu(2+) was elucidated. The obtained compounds were subsequently evaluated against a panel of different cancer cell lines. As a result, several molecules were identified as promising micromolar hits with good selectivity index. Instead of analogous thiohydantoins, which have been synthesized previously, selenohydantoins demonstrated a relatively high antioxidant activity comparable (or greater) to the reference molecule, Ebselen, a clinically approved drug candidate. The most active compounds have been selected for further biological trials.
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Affiliation(s)
- Yan A Ivanenkov
- Moscow State University, Chemistry Dept., 119991 Moscow, Leninskie Gory, Building 1/3, GSP-1, Russian Federation; National University of Science and Technology MISiS, Moscow 119049, Russian Federation; Moscow Institute of Physics and Technology (MIPT), Dolgoprudny, InstitutskiPereulok 9, Moskovskaya Oblast, Russian Federation.
| | - Mark S Veselov
- Moscow Institute of Physics and Technology (MIPT), Dolgoprudny, InstitutskiPereulok 9, Moskovskaya Oblast, Russian Federation.
| | - Igor G Rezekin
- Moscow Institute of Physics and Technology (MIPT), Dolgoprudny, InstitutskiPereulok 9, Moskovskaya Oblast, Russian Federation
| | - Dmitriy A Skvortsov
- Moscow State University, Chemistry Dept., 119991 Moscow, Leninskie Gory, Building 1/3, GSP-1, Russian Federation
| | - Yuri B Sandulenko
- Moscow Institute of Physics and Technology (MIPT), Dolgoprudny, InstitutskiPereulok 9, Moskovskaya Oblast, Russian Federation
| | - Marina V Polyakova
- Moscow Institute of Physics and Technology (MIPT), Dolgoprudny, InstitutskiPereulok 9, Moskovskaya Oblast, Russian Federation
| | - Dmitry S Bezrukov
- Moscow State University, Chemistry Dept., 119991 Moscow, Leninskie Gory, Building 1/3, GSP-1, Russian Federation
| | - Sergey V Vasilevsky
- Moscow State University, Chemistry Dept., 119991 Moscow, Leninskie Gory, Building 1/3, GSP-1, Russian Federation
| | - Maxim E Kukushkin
- Moscow State University, Chemistry Dept., 119991 Moscow, Leninskie Gory, Building 1/3, GSP-1, Russian Federation
| | - Anna A Moiseeva
- Moscow State University, Chemistry Dept., 119991 Moscow, Leninskie Gory, Building 1/3, GSP-1, Russian Federation
| | - Alexander V Finko
- Moscow State University, Chemistry Dept., 119991 Moscow, Leninskie Gory, Building 1/3, GSP-1, Russian Federation
| | - Victor E Koteliansky
- Moscow State University, Chemistry Dept., 119991 Moscow, Leninskie Gory, Building 1/3, GSP-1, Russian Federation
| | - Natalia L Klyachko
- Moscow State University, Chemistry Dept., 119991 Moscow, Leninskie Gory, Building 1/3, GSP-1, Russian Federation; National University of Science and Technology MISiS, Moscow 119049, Russian Federation
| | - Lubov A Filatova
- Moscow State University, Chemistry Dept., 119991 Moscow, Leninskie Gory, Building 1/3, GSP-1, Russian Federation
| | - Elena K Beloglazkina
- Moscow State University, Chemistry Dept., 119991 Moscow, Leninskie Gory, Building 1/3, GSP-1, Russian Federation; National University of Science and Technology MISiS, Moscow 119049, Russian Federation
| | - Nikolay V Zyk
- Moscow State University, Chemistry Dept., 119991 Moscow, Leninskie Gory, Building 1/3, GSP-1, Russian Federation
| | - Alexander G Majouga
- Moscow State University, Chemistry Dept., 119991 Moscow, Leninskie Gory, Building 1/3, GSP-1, Russian Federation; National University of Science and Technology MISiS, Moscow 119049, Russian Federation.
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14
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Zhu J, Lippa GM, Gulick AM, Tipton PA. Examining Reaction Specificity in PvcB, a Source of Diversity in Isonitrile-Containing Natural Products. Biochemistry 2015; 54:2659-69. [PMID: 25866990 DOI: 10.1021/acs.biochem.5b00255] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Many bacteria produce isonitrile-containing natural products that are derived from aromatic amino acids. The synthetic clusters that control biosynthesis most commonly encode two enzymes, designated PvcA and PvcB, as well as additional enzymes that direct synthesis of the natural product. The PvcA enzyme installs the isonitrile moiety at the amino group of either tyrosine or tryptophan, as dictated by the particular pathway. The common pathway intermediate produced by PvcA is directed toward different ultimate products by PvcB, a member of the family of Fe(2+), α-ketoglutarate-dependent oxygenases. To continue our investigation of the structural and functional properties of the isonitrile biosynthetic pathways, we present here a study of the PvcB homologues from three organisms. Two pathways, derived from Pseudomonas aeruginosa and Xenorhabdus nematophila, produce known products. A third PvcB homologue from Erwinia amylovora is part of an uncharacterized pathway. Our results demonstrate the diversity of reactions catalyzed. Although all PvcB enzymes catalyze the hydroxylation of the tyrosine isonitrile substrate, the elimination of the hydroxyl in Pseudomonas and Erwinia is driven by deprotonation at Cα, resulting in the initial production of an unsaturated tyrosine isonitrile product that then cyclizes to a coumarin derivative. PvcB from Xenorhabdus, in contrast, catalyzes the same oxygenation, but loss of the hydroxyl group is accompanied by decarboxylation of the intermediate. Steady-state kinetic analysis of the three reactions and a docking model for the binding of the tyrosine isonitrile substrate in the PvcB active site highlight subtle differences between the PvcB homologues.
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Affiliation(s)
- Jing Zhu
- †Department of Biochemistry, University of Missouri, Columbia, Missouri 65211, United States
| | - Geoffrey M Lippa
- ‡Hauptman-Woodward Medical Research Foundation, Buffalo, New York 14203, United States
| | - Andrew M Gulick
- ‡Hauptman-Woodward Medical Research Foundation, Buffalo, New York 14203, United States.,§Department of Structural Biology, University at Buffalo, Buffalo, New York 14203, United States
| | - Peter A Tipton
- †Department of Biochemistry, University of Missouri, Columbia, Missouri 65211, United States
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15
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One-pot synthesis of orthogonally protected dipeptide selenazoles employing Nα-amino selenocarboxamides and α-bromomethyl ketones. Tetrahedron Lett 2014. [DOI: 10.1016/j.tetlet.2014.10.085] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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16
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Merino-Montiel P, Maza S, Martos S, López Ó, Maya I, Fernández-Bolaños JG. Synthesis and antioxidant activity of O-alkyl selenocarbamates, selenoureas and selenohydantoins. Eur J Pharm Sci 2012; 48:582-92. [PMID: 23287366 DOI: 10.1016/j.ejps.2012.12.016] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2012] [Revised: 12/19/2012] [Accepted: 12/20/2012] [Indexed: 11/24/2022]
Abstract
The preparation of three different families of lipophilic organoselenium compounds (aryl- and sugar-derived selenoureas, O-alkyl selenocarbamates and selenohydantoins) has been carried out in order to evaluate their in vitro antioxidant profile, analyzing the influence of the selenium-containing functional group, and the substituents on the activity. Title compounds have therefore been studied for the first time as free radical, hydrogen peroxide, alkyl peroxides and nitric oxide scavengers using colorimetric methods; furthermore, their glutathione peroxidase-like activity has also been analyzed by NMR spectroscopy. Free radical scavenging activity has been evaluated using the DPPH method; the strongest free radical scavengers were found to be both, aryl- and sugar-derived selenoureas, with EC₅₀ values ranging 19-46 μM. Concerning anti-H₂O₂ activity, measured by the horseradish peroxidase-mediated oxidation of phenol red, the best results were achieved for aryl selenohydantoins, showing a 61-76% inhibition at 0.5 mM concentration. Organoselenium compounds were also found to be capable of inhibiting the chain reaction involving lipid peroxidation (ferric thiocyanate method); thus, when tested at 0.74 mM, sugar selenocarbamates exhibited 49-71% inhibition of alkyl peroxides-mediated degradation of linoleic acid. Nitric oxide scavenging was studied by transforming sodium nitroprusside into nitrite ion, which in turn was transformed into an easily UV-detectable azocompound; aryl selenocarbamates exhibited 64-80% inhibition at 0.71 mM concentration. It has also been demonstrated that selenoxo compounds can behave as excellent glutathione peroxidase mimics; thus a 0.05 molar equiv. of the title compounds catalyzed efficiently the H₂O₂-mediated oxidation of dithiothreitol into the corresponding cyclic disulfide, mimicking removal of H₂O₂ exerted by glutathione peroxidase; t(1/2) values were found to be quite low for aryl- and sugar-derived selenoureas (2.0-12.7 min).
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Affiliation(s)
- Penélope Merino-Montiel
- Departamento de Química Orgánica, Facultad de Química, Universidad de Sevilla, Apartado 1203, E-41071 Seville, Spain
| | - Susana Maza
- Departamento de Química Orgánica, Facultad de Química, Universidad de Sevilla, Apartado 1203, E-41071 Seville, Spain
| | - Sergio Martos
- Departamento de Química Orgánica, Facultad de Química, Universidad de Sevilla, Apartado 1203, E-41071 Seville, Spain
| | - Óscar López
- Departamento de Química Orgánica, Facultad de Química, Universidad de Sevilla, Apartado 1203, E-41071 Seville, Spain.
| | - Inés Maya
- Departamento de Química Orgánica, Facultad de Química, Universidad de Sevilla, Apartado 1203, E-41071 Seville, Spain
| | - José G Fernández-Bolaños
- Departamento de Química Orgánica, Facultad de Química, Universidad de Sevilla, Apartado 1203, E-41071 Seville, Spain.
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17
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Vishwanatha TM, Narendra N, Chattopadhyay B, Mukherjee M, Sureshbabu VV. Synthesis of Selenoxo Peptides and Oligoselenoxo Peptides Employing LiAlHSeH. J Org Chem 2012; 77:2689-702. [DOI: 10.1021/jo2024703] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- T. M. Vishwanatha
- Peptide Research Laboratory,
Department of Studies in Chemistry, Central College Campus, Bangalore University, Dr. B. R. Ambedkar Veedhi, Bangalore
560001, India
| | - N. Narendra
- Peptide Research Laboratory,
Department of Studies in Chemistry, Central College Campus, Bangalore University, Dr. B. R. Ambedkar Veedhi, Bangalore
560001, India
| | - Basab Chattopadhyay
- Department
of Solid State Physics, Indian Association for the Cultivation of Science,
Jadavpur, Kolkata 700032, India
| | - Monika Mukherjee
- Department
of Solid State Physics, Indian Association for the Cultivation of Science,
Jadavpur, Kolkata 700032, India
| | - Vommina V. Sureshbabu
- Peptide Research Laboratory,
Department of Studies in Chemistry, Central College Campus, Bangalore University, Dr. B. R. Ambedkar Veedhi, Bangalore
560001, India
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18
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Narendra N, Vishwanatha T, Nagendra G, Sureshbabu VV. Chiral Nβ-Fmoc-amino alkyl isonitriles in Ugi-4CR: an assembly of novel 1,1′-iminodicarboxylated peptidomimetics. Tetrahedron 2012. [DOI: 10.1016/j.tet.2011.12.037] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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