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Mamedov VA, Galimullina VR, Kadyrova SF, Rizvanov IK, Latypov SK. A concise synthesis of indolin-2-ones via direct acid-catalyzed intramolecular Friedel-Crafts alkylation of 3-chloro-N-(substituted)-2-oxo-N,3-diarylpropanamides. Tetrahedron Lett 2022. [DOI: 10.1016/j.tetlet.2022.153797] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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2
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Chugunova E, Gazizov A, Islamov D, Burilov A, Tulesinova A, Kharlamov S, Syakaev V, Babaev V, Akylbekov N, Appazov N, Usachev K, Zhapparbergenov R. The Reactivity of Azidonitrobenzofuroxans towards 1,3-Dicarbonyl Compounds: Unexpected Formation of Amino Derivative via the Regitz Diazo Transfer and Tautomerism Study. Int J Mol Sci 2021; 22:ijms22179646. [PMID: 34502553 PMCID: PMC8431794 DOI: 10.3390/ijms22179646] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2021] [Revised: 08/31/2021] [Accepted: 09/03/2021] [Indexed: 12/13/2022] Open
Abstract
Herein, we report on the reaction of nitro-substituted azidobenzofuroxans with 1,3-dicarbonyl compounds in basic media. The known reactions of benzofuroxans and azidofuroxans with 1,3-dicarbonyl compounds in the presence of bases are the 1,3-dipolar cycloaddition and the Beirut reaction. In contrast with this, azidonitrobenzofuroxan reacts with 1,3-carbonyl compounds through Regitz diazo transfer, which is the first example of this type of reaction for furoxan derivatives. This difference is seemingly due to the strong electron-withdrawing effect of the superelectrophilic azidonitrobenzofuroxan, which serves as the azido transfer agent rather than 1,3-dipole in this case.
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Affiliation(s)
- Elena Chugunova
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center, Russian Academy of Sciences, 420088 Kazan, Russia; (D.I.); (A.B.); (S.K.); (V.S.); (V.B.)
- Laboratory of Plant Infectious Diseases, FRC Kazan Scientific Center of Russian Academy of Sciences, 420111 Kazan, Russia
- Correspondence: (E.C.); (A.G.); (N.A.); Tel.: +7-843-272-7324 (E.C. & A.G.); +7-724-223-1041 (N.A.)
| | - Almir Gazizov
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center, Russian Academy of Sciences, 420088 Kazan, Russia; (D.I.); (A.B.); (S.K.); (V.S.); (V.B.)
- Laboratory of Plant Infectious Diseases, FRC Kazan Scientific Center of Russian Academy of Sciences, 420111 Kazan, Russia
- Correspondence: (E.C.); (A.G.); (N.A.); Tel.: +7-843-272-7324 (E.C. & A.G.); +7-724-223-1041 (N.A.)
| | - Daut Islamov
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center, Russian Academy of Sciences, 420088 Kazan, Russia; (D.I.); (A.B.); (S.K.); (V.S.); (V.B.)
| | - Alexander Burilov
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center, Russian Academy of Sciences, 420088 Kazan, Russia; (D.I.); (A.B.); (S.K.); (V.S.); (V.B.)
- Laboratory of Plant Infectious Diseases, FRC Kazan Scientific Center of Russian Academy of Sciences, 420111 Kazan, Russia
| | - Alena Tulesinova
- Institute of Chemical Engineering and Technology, The Kazan National Research Technological University, 420015 Kazan, Russia;
| | - Sergey Kharlamov
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center, Russian Academy of Sciences, 420088 Kazan, Russia; (D.I.); (A.B.); (S.K.); (V.S.); (V.B.)
| | - Victor Syakaev
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center, Russian Academy of Sciences, 420088 Kazan, Russia; (D.I.); (A.B.); (S.K.); (V.S.); (V.B.)
| | - Vasily Babaev
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center, Russian Academy of Sciences, 420088 Kazan, Russia; (D.I.); (A.B.); (S.K.); (V.S.); (V.B.)
| | - Nurgali Akylbekov
- Laboratory of Engineering Profile “Physical and Chemical Methods of Analysis”, Korkyt Ata Kyzylorda University, Aitekebie Str. 29A, Kyzylorda 120014, Kazakhstan; (N.A.); (R.Z.)
| | - Nurbol Appazov
- Laboratory of Engineering Profile “Physical and Chemical Methods of Analysis”, Korkyt Ata Kyzylorda University, Aitekebie Str. 29A, Kyzylorda 120014, Kazakhstan; (N.A.); (R.Z.)
- I. Zhakhaev Kazakh Scientific Research Institute of Rice Growing, AbayAvenue 25B, Kyzylorda 120008, Kazakhstan
- Correspondence: (E.C.); (A.G.); (N.A.); Tel.: +7-843-272-7324 (E.C. & A.G.); +7-724-223-1041 (N.A.)
| | - Konstantin Usachev
- Kazan Institute of Biochemistry and Biophysics, FRC Kazan Scientific Center of Russian Academy of Sciences, 420111 Kazan, Russia;
| | - Rakhmetulla Zhapparbergenov
- Laboratory of Engineering Profile “Physical and Chemical Methods of Analysis”, Korkyt Ata Kyzylorda University, Aitekebie Str. 29A, Kyzylorda 120014, Kazakhstan; (N.A.); (R.Z.)
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3
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Krivdin LB. Recent advances in computational 31 P NMR: Part 1. Chemical shifts. MAGNETIC RESONANCE IN CHEMISTRY : MRC 2020; 58:478-499. [PMID: 31703153 DOI: 10.1002/mrc.4965] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/18/2019] [Revised: 10/19/2019] [Accepted: 10/23/2019] [Indexed: 06/10/2023]
Abstract
This is the first part of two closely related reviews dealing with the computation of phosphorus-31 nuclear magnetic resonance chemical shifts in a wide series of organophosphorus compounds including complexes, clusters, and bioorganic phosphorus compounds. In particular, the analysis of the accuracy factors, such as substitution effects, solvent effects, vibrational corrections, and relativistic effects, is presented. This review is dedicated to the Full Member of the Russian Academy of Sciences Professor Boris A. Trofimov in view of his invaluable contribution to the field of synthesis, nuclear magnetic resonance, and computation studies of organophosphorus compounds.
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Affiliation(s)
- Leonid B Krivdin
- A. E. Favorsky Irkutsk Institute of Chemistry, Siberian Branch of the Russian Academy of Sciences, Irkutsk, Russia
- Angarsk State Technical University, Irkutsk Region, Russia
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4
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Latypov SK, Kondrashova SA, Polyancev FM, Sinyashin OG. Quantum Chemical Calculations of 31P NMR Chemical Shifts in Nickel Complexes: Scope and Limitations. Organometallics 2020. [DOI: 10.1021/acs.organomet.0c00127] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Shamil K. Latypov
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center of RAS, Arbuzov str. 8, Kazan, Tatarstan, Russian Federation 420083
| | - Svetlana A. Kondrashova
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center of RAS, Arbuzov str. 8, Kazan, Tatarstan, Russian Federation 420083
| | - Fedor M. Polyancev
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center of RAS, Arbuzov str. 8, Kazan, Tatarstan, Russian Federation 420083
| | - Oleg G. Sinyashin
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center of RAS, Arbuzov str. 8, Kazan, Tatarstan, Russian Federation 420083
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5
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3‐(α‐Chlorobenzyl)quinoxalin‐2(1
H
)‐ones as Versatile Reagents for the Synthesis of 3‐Benzylquinoxalin‐2(1
H
)‐ones and Thiazolo[3,4‐
a
]quinoxalin‐4(5
H
)‐ones. J Heterocycl Chem 2019. [DOI: 10.1002/jhet.3616] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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6
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Jovené C, Jacquet M, Chugunova EA, Kharlamov SV, Goumont R. Synthesis and 1-oxide/3-oxide interconversion of 4-substituted benzodifuroxans: a thorough NMR and theoretical study of the structure of 4-fluoro- and 4-chloro-benzodifuroxan. Tetrahedron 2016. [DOI: 10.1016/j.tet.2016.03.021] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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7
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Murav’ev AA, Galieva FB, Strel’nik AG, Nugmanov RI, Grüner M, Solov’eva SE, Latypov SK, Antipin IS, Konovalov AI. Synthesis and structure of lower rim-substituted alkynyl derivatives of thiacalix[4]arene. RUSSIAN JOURNAL OF ORGANIC CHEMISTRY 2015. [DOI: 10.1134/s1070428015090213] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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8
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Romanova IP, Yusupova GG, Latypov SK, Strelnik AG, Rizvanov IK, Bogdanov AV, Mironov VF, Sinyashin OG. Features of the synthesis of isatins and isoindigo derivatives bearing long-chain haloalkyl substituents. MONATSHEFTE FUR CHEMIE 2015. [DOI: 10.1007/s00706-014-1356-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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9
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Latypov SK, Polyancev FM, Yakhvarov DG, Sinyashin OG. Quantum chemical calculations of31P NMR chemical shifts: scopes and limitations. Phys Chem Chem Phys 2015; 17:6976-87. [DOI: 10.1039/c5cp00240k] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
High level of theory is not necessarily needed to obtain rather accurate predictions of31P chemical shifts by GIAO method. For example, the PBE1PBE/6-311G(2d,2p)//PBE1PBE/6-31+G(d) combination allowed to obtain good results for variety of middle-size organophosphorus compounds (M= 200–700 Da).
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Affiliation(s)
- Shamil K. Latypov
- A.E. Arbuzov Institute of Organic and Physical Chemistry
- Kazan Scientific Center
- Russian Academy of Sciences
- Kazan
- Russian Federation
| | - Fedor M. Polyancev
- A.E. Arbuzov Institute of Organic and Physical Chemistry
- Kazan Scientific Center
- Russian Academy of Sciences
- Kazan
- Russian Federation
| | - Dmitry G. Yakhvarov
- A.E. Arbuzov Institute of Organic and Physical Chemistry
- Kazan Scientific Center
- Russian Academy of Sciences
- Kazan
- Russian Federation
| | - Oleg G. Sinyashin
- A.E. Arbuzov Institute of Organic and Physical Chemistry
- Kazan Scientific Center
- Russian Academy of Sciences
- Kazan
- Russian Federation
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10
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Friedländer reaction/quinoxalinone–benzimidazole rearrangement sequence: expeditious entry to diverse quinoline derivatives with the benzimidazole moieties. Tetrahedron 2014. [DOI: 10.1016/j.tet.2014.06.007] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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11
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Moore KW, Li R, Pelczer I, Rabitz H. NMR landscapes for chemical shift prediction. J Phys Chem A 2012; 116:9142-57. [PMID: 22900681 DOI: 10.1021/jp306353b] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The ability to reliably predict NMR chemical shifts plays an important role in elucidating the structure of organic molecules. Additionally, an intriguing question is how the multitude of variable factors (structural, electronic, and environmental) correlate with the actual electromagnetic shielding effect that determines the chemical shift value. This work presents NMRscape as a new tool for understanding these correlations by constructing the landscape that describes the relationship between the chemical shift value and the moieties bonded to a molecular scaffold. The scaffold may be as small as a single atom probed by NMR or a larger molecular framework containing the probed atom. NMRscape operates with only a list of the chemical moieties bonded to the scaffold, without utilizing any potentially biasing chemometric descriptors. The corresponding chemical shift landscape is constructed based on fundamental physical principles, which makes NMRscape a credible chemical shift prediction and analysis tool. As an illustration, we demonstrate that NMRscape can predict (13)C chemical shifts with an accuracy exceeding the substituent chemical shift (SCS) increment, hierarchical organization of spherical environments (HOSE), and neural networks (NN), methods for three distinct families of molecules sharing a common scaffold structure with moieties placed at two variable sites. The constructed NMR landscapes confirmed known empirical rules relating chemical shift values to the variation of chemical moieties on a scaffold, as well as uncovered hitherto hidden relationships. The practical importance of NMRscape is discussed.
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Affiliation(s)
- Katharine W Moore
- Department of Chemistry, Princeton University , Princeton, New Jersey 08544, United States
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12
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Khalilov LM, Tulyabaev AR, Tuktarov AR. Homo- and methano[60]fullerenes with chiral attached moieties--1H and 13C NMR chemical shift assignments and diastereotopicity effects. MAGNETIC RESONANCE IN CHEMISTRY : MRC 2011; 49:768-774. [PMID: 22102505 DOI: 10.1002/mrc.2809] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/27/2011] [Revised: 07/13/2011] [Accepted: 07/19/2011] [Indexed: 05/31/2023]
Abstract
(1)H and (13)C NMR chemical shift predictions of homo- and methano[60]fullerenes containing chiral centers in attached fragment were made using the two-dimensional NMR technique (HH COSY, (1)H-(13)C HSQC and HMBC) and the quantum chemistry GIAO calculation method in the PBE/3ζ approach. The influence of a chiral substituent on the (13)C chemical shifts of diastereotopic fullerene carbons was estimated by comparing the calculated and experimental (13)C NMR spectra. The resonances of the fullerene carbons in α-, β- and δ-positions relative to the position of the substituent exhibit the greatest diastereotopic splitting.
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Affiliation(s)
- Leonard M Khalilov
- Institute of Petrochemistry and Catalysis, Russian Academy of Sciences, Ufa, Russia.
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13
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Semenov VE, Krylova ES, Galyametdinova IV, Chernova AV, Kharlamov SV, Latypov SK, Reznik VS. Synthesis and reactivity of acyclic and macrocyclic uracils bridged with five-membered heterocycles. Tetrahedron 2011. [DOI: 10.1016/j.tet.2011.07.034] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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14
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Mamedov VA, Zhukova NA, Beschastnova TN, Gubaidullin AT, Balandina AA, Latypov SK. A reaction for the synthesis of benzimidazoles and 1H-imidazo[4,5-b]pyridines via a novel rearrangement of quinoxalinones and their aza-analogues when exposed to 1,2-arylenediamines. Tetrahedron 2010. [DOI: 10.1016/j.tet.2010.10.026] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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15
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Study of the protonation (methylation) position and tautomeric structure of thiopyrimidine derivatives by 2D 1H—15H NMR HSQC/HMBC. Experimental approach and theoretical modeling. Russ Chem Bull 2010. [DOI: 10.1007/s11172-009-0008-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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16
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Fused polycyclic nitrogen-containing heterocycles 21. Condensation of 4-hydroxy-3,5-diphenyl-2-phenyliminothiazolidine with 5-fluoro-4-morpholino- and 4-(4-methylpiperazino)-1,2-phenylenediamines. Russ Chem Bull 2010. [DOI: 10.1007/s11172-009-0030-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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17
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Elyashberg M, Blinov K, Smurnyy Y, Churanova T, Williams A. Empirical and DFT GIAO quantum-mechanical methods of (13)C chemical shifts prediction: competitors or collaborators? MAGNETIC RESONANCE IN CHEMISTRY : MRC 2010; 48:219-229. [PMID: 20108257 DOI: 10.1002/mrc.2571] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
The accuracy of (13)C chemical shift prediction by both DFT GIAO quantum-mechanical (QM) and empirical methods was compared using 205 structures for which experimental and QM-calculated chemical shifts were published in the literature. For these structures, (13)C chemical shifts were calculated using HOSE code and neural network (NN) algorithms developed within our laboratory. In total, 2531 chemical shifts were analyzed and statistically processed. It has been shown that, in general, QM methods are capable of providing similar but inferior accuracy to the empirical approaches, but quite frequently they give larger mean average error values. For the structural set examined in this work, the following mean absolute errors (MAEs) were found: MAE(HOSE) = 1.58 ppm, MAE(NN) = 1.91 ppm and MAE(QM) = 3.29 ppm. A strategy of combined application of both the empirical and DFT GIAO approaches is suggested. The strategy could provide a synergistic effect if the advantages intrinsic to each method are exploited.
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Affiliation(s)
- Mikhail Elyashberg
- Advanced Chemistry Development, Moscow Department, 6 Akademik Bakulev St, 117513 Moscow, Russian Federation
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18
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Mamedov VA, Kalinin AA, Balandina AA, Rizvanov IK, Latypov SK. An efficient method for the synthesis of imidazo[1,5-a]quinoxalines from 3-acylquinoxalinones and benzylamines via a novel imidazoannulation. Tetrahedron 2009. [DOI: 10.1016/j.tet.2009.08.081] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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19
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Elyashberg ME, Blinov KA, Williams AJ. The application of empirical methods of (13)C NMR chemical shift prediction as a filter for determining possible relative stereochemistry. MAGNETIC RESONANCE IN CHEMISTRY : MRC 2009; 47:333-341. [PMID: 19206140 DOI: 10.1002/mrc.2396] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
The reliable determination of stereocenters contained within chemical structures usually requires utilization of NMR data, chemical derivatization, molecular modeling, quantum-mechanical (QM) calculations and, if available, X-ray analysis. In this article, we show that the number of stereoisomers which need to be thoroughly verified, can be significantly reduced by the application of NMR chemical shift calculation to the full stereoisomer set of possibilities using a fragmental approach based on HOSE codes. The applicability of this suggested method is illustrated using experimental data published for a series of complex chemical structures.
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Affiliation(s)
- Mikhail E Elyashberg
- Advanced Chemistry Development, Moscow Department, 6 Akademik Bakulev Street, Moscow 117513, Russian Federation
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20
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Semenov VE, Lodochnikova OA, Gubaidullin AT, Kataeva ON, Chernova AV, Efremov YY, Kharlamov SV, Latypov SK, Reznik VS. α,ω-Bis(3,6-dimethyl-2,4-dioxo-1,2,3,4-tetrahydropyrimidin-1-yl)alkanes and products of their cyclization, pyrimidinophanes: intra- and intermolecular interaction in crystals and in solutions. Russ Chem Bull 2009. [DOI: 10.1007/s11172-008-0019-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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21
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Structural studies of 4,5,6,7-tetrabromobenzimidazole derivatives by means of solid-state 13C, 15N NMR spectroscopy and DFT calculations. J Mol Struct 2009. [DOI: 10.1016/j.molstruc.2008.08.001] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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22
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23
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Gazizov MB, Khairullin RA, Alekhina AI, Litvinov IA, Krivolapov DB, Latypov SK, Balandina AA, Musin RZ, Sinyashin OG. New products of the reaction of aldimines with dialkylphosphites. MENDELEEV COMMUNICATIONS 2008. [DOI: 10.1016/j.mencom.2008.09.012] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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24
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Latypov S, Balandina A, Boccalini M, Matteucci A, Usachev K, Chimichi S. Structure Determination of Regioisomeric Fused Heterocycles by the Combined Use of 2D NMR Experiments and GIAO DFT13C Chemical Shifts. European J Org Chem 2008. [DOI: 10.1002/ejoc.200800550] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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25
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Mamedov VA, Murtazina AM, Sysoeva LP, Mironova EV, Latypov SK, Balandina AA, Kadyrova SF, Gubaidullin AT, Litvinov IA. Condensation of diethyl 2,4,6-Trioxoheptanedioate with 2-(Aryliminomethyl)phenols. A new synthesis of chromeno[4,3-b]pyridines. RUSSIAN JOURNAL OF ORGANIC CHEMISTRY 2008. [DOI: 10.1134/s1070428008060225] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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26
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Kozlov AV, Semenov VE, Mikhailov AS, Aganov AV, Smith MB, Reznik VS, Latypov SK. Preferential Protonation and Methylation Site of Thiopyrimidine Derivatives in Solution: NMR Data. J Phys Chem B 2008; 112:3259-67. [DOI: 10.1021/jp710952r] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Artem V. Kozlov
- Institute of Organic and Physical Chemistry, Arbuzov Str. 8, Kazan, 420088, Russian Federation, Kazan State University, Kazan, 420008, Russian Federation, and University of Connecticut, 55 North Eagleville Road, 4-60, Storrs, Connecticut 06269-3060
| | - Vyacheslav E. Semenov
- Institute of Organic and Physical Chemistry, Arbuzov Str. 8, Kazan, 420088, Russian Federation, Kazan State University, Kazan, 420008, Russian Federation, and University of Connecticut, 55 North Eagleville Road, 4-60, Storrs, Connecticut 06269-3060
| | - Anatoliy S. Mikhailov
- Institute of Organic and Physical Chemistry, Arbuzov Str. 8, Kazan, 420088, Russian Federation, Kazan State University, Kazan, 420008, Russian Federation, and University of Connecticut, 55 North Eagleville Road, 4-60, Storrs, Connecticut 06269-3060
| | - Albert V. Aganov
- Institute of Organic and Physical Chemistry, Arbuzov Str. 8, Kazan, 420088, Russian Federation, Kazan State University, Kazan, 420008, Russian Federation, and University of Connecticut, 55 North Eagleville Road, 4-60, Storrs, Connecticut 06269-3060
| | - Michael B. Smith
- Institute of Organic and Physical Chemistry, Arbuzov Str. 8, Kazan, 420088, Russian Federation, Kazan State University, Kazan, 420008, Russian Federation, and University of Connecticut, 55 North Eagleville Road, 4-60, Storrs, Connecticut 06269-3060
| | - Vladimir S. Reznik
- Institute of Organic and Physical Chemistry, Arbuzov Str. 8, Kazan, 420088, Russian Federation, Kazan State University, Kazan, 420008, Russian Federation, and University of Connecticut, 55 North Eagleville Road, 4-60, Storrs, Connecticut 06269-3060
| | - Shamil K. Latypov
- Institute of Organic and Physical Chemistry, Arbuzov Str. 8, Kazan, 420088, Russian Federation, Kazan State University, Kazan, 420008, Russian Federation, and University of Connecticut, 55 North Eagleville Road, 4-60, Storrs, Connecticut 06269-3060
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27
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Mamedov VA, Kalinin AA, Yanilkin VV, Nastapova NV, Morozov VI, Balandina AA, Gubaidullin AT, Isaikina OG, Chernova AV, Latypov SK, Litvinov IA. Synthesis, structure, and electrochemical properties of 12,42-dioxo-21,31-diphenyl-7,10,13-trioxa-1,4(3,1)-diquinoxalina-2(2,3),3(3,2)-diindolizinacyclopentadecaphane. Russ Chem Bull 2007. [DOI: 10.1007/s11172-007-0322-7] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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28
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Semenov VE, Galiullina LF, Lodochnikova OA, Kataeva ON, Gubaidullin AT, Chernova AV, Efremov YY, Latypov SK, Reznik VS. Triuracils – 1,3-Bis[ω-(N-methyluracil-1-yl)alkyl]thymines and Their 5,5′-Cyclic Counterparts. European J Org Chem 2007. [DOI: 10.1002/ejoc.200700162] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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Figadère B, Hui X, Schmidt F, Akram Fakhfakh M, Franck X. Novel Highly Regioselective Syntheses of Unsymmetrical 2,3-Disubstituted Quinoxalines. HETEROCYCLES 2007. [DOI: 10.3987/com-06-s(k)19] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Radhakrishnan T, Sreekumari Nair P, Kolawole GA, Revaprasadu N, Hawkes GE, Motevalli M, Bento ES, O'Brien P. Reaction of o-phenylenediamine with diacetyl monoxime: characterisation of the product by solid-state 13C and 15N MAS NMR. MAGNETIC RESONANCE IN CHEMISTRY : MRC 2007; 45:59-64. [PMID: 17103484 DOI: 10.1002/mrc.1923] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
2,3-dimethylquinoxaline (DMQ) and dimethylglyoxime (DMGH2) form a 1:1 hydrogen-bonded complex in the solid state, which is completely dissociated in methanol solution. There are small differences in solid-state 13C shifts between the separated components DMQ and DMGH2 and the complex. The changes in 15N solid-state chemical shifts are more significant: the hydrogen bond imparting a low frequency shift of ca 19 ppm. The effect of direct protonation on the DMQ solid-state 15N shifts was measured, and the experimental 15N data correlated with those from GIAO molecular orbital (MO) calculations.
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Affiliation(s)
- T Radhakrishnan
- Department of Chemistry, University of Zululand, Private Bag X1001, Kwadlangezwa 3886, Kwa Zulu Natal, Republic of South Africa
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Balandina AA, Mamedov VA, Khafizova EA, Latypov SK. Combined application of 2D NMR correlation methods and ab initio chemical shift calculations to the structure determination of new heterocyclic compounds. Russ Chem Bull 2006. [DOI: 10.1007/s11172-006-0580-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Balandina A, Saifina D, Mamedov V, Latypov S. Application of theoretically computed chemical shifts to structure determination of novel heterocyclic compounds. J Mol Struct 2006. [DOI: 10.1016/j.molstruc.2006.01.008] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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34
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Abdrakhmanova LM, Mironov VF, Baronova TA, Dimukhametov MN, Krivolapov DB, Litvinov IA, Balandina AA, Latypov SK, Konovalov AI. A new approach to the synthesis of phosphoranes based on the reaction of benzo[d]-1,3,2-dioxaphospholes having a β- or γ-carbonyl group in exocyclic substituent with hexafluoroacetone. MENDELEEV COMMUNICATIONS 2006. [DOI: 10.1070/mc2006v016n06abeh002414] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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35
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Hui X, Desrivot J, Bories C, Loiseau PM, Franck X, Hocquemiller R, Figadère B. Synthesis and antiprotozoal activity of some new synthetic substituted quinoxalines. Bioorg Med Chem Lett 2005; 16:815-20. [PMID: 16309903 DOI: 10.1016/j.bmcl.2005.11.025] [Citation(s) in RCA: 148] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2005] [Revised: 11/07/2005] [Accepted: 11/07/2005] [Indexed: 11/28/2022]
Abstract
A series of 29 new quinoxalines was synthesized and evaluated in vitro against several parasites (Leishmania donovani, Trypanosoma brucei brucei, and Trichomonas vaginalis). Several of them displayed interesting activities, and particularly four quinoxaline amides showed in vitro antileishmanial properties (IC50 less than 20 microM).
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Affiliation(s)
- Xu Hui
- Laboratoire de Pharmacognosie et Groupe Chimiothérapie Antiparasitaire (associé au CNRS-BioCIS) Faculté de Pharmacie, Université de Paris-Sud, rue J.B. Clément, 92296 Châtenay-Malabry, France
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