1
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Subramaniam SV, Singh B, Pradeep N, Peruncheralathan S. PIFA-mediated intramolecular N-arylation of 2-aminoquinoxalines to afford indolo[2,3- b]quinoxaline derivatives. Org Biomol Chem 2024; 22:5803-5808. [PMID: 38946202 DOI: 10.1039/d4ob00812j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/02/2024]
Abstract
We present the PIFA-mediated intramolecular N-arylation of 2-aminoquinoxalines at room temperature for the first time. This method provides a wide range of indolo[2,3-b]quinoxalines in good to excellent yields within a short time. The C-H bond functionalization occurs without the need for an inert atmosphere or additives. Additionally, a double C-H bond functionalization was observed, where the first reaction forms a C-N bond (N-arylation) and the second forms a C-O bond, yielding an acetal-functionalized product. Mechanistic investigations suggest that the C-H bond functionalization proceeds through an ionic mechanism, whereas acetal functionalization follows a radical pathway. This method extends to the derivation of indoloquinoxalines, including the target compound BIQMCz.
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Affiliation(s)
- Subhashini V Subramaniam
- School of Chemical Sciences, National Institute of Science Education and Research (NISER) Bhubaneswar, an OCC of Homi Bhabha National Institute, Khurda - 752050, India.
| | - Badal Singh
- School of Chemical Sciences, National Institute of Science Education and Research (NISER) Bhubaneswar, an OCC of Homi Bhabha National Institute, Khurda - 752050, India.
| | - Natarajan Pradeep
- School of Chemical Sciences, National Institute of Science Education and Research (NISER) Bhubaneswar, an OCC of Homi Bhabha National Institute, Khurda - 752050, India.
| | - Saravanan Peruncheralathan
- School of Chemical Sciences, National Institute of Science Education and Research (NISER) Bhubaneswar, an OCC of Homi Bhabha National Institute, Khurda - 752050, India.
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2
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Mamedov VA, Galimullina VR, Qu ZW, Zhu H, Syakaev VV, Shamsutdinova LR, Sergeev MA, Rizvanov IK, Gubaidullin AT, Sinyashin OG, Grimme S. AlCl 3-Promoted Intramolecular Indolinone-Quinolone Rearrangement of Spiro[indoline-3,2'-quinoxaline]-2,3'-diones: Easy Access to Quinolino[3,4- b]quinoxalin-6-ones. J Org Chem 2023. [PMID: 38151045 DOI: 10.1021/acs.joc.3c01906] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2023]
Abstract
A facile and direct intramolecular indolinone-quinolone rearrangement was developed for the synthesis of quinolino[3,4-b]quinoxalin-6-ones from spiro[indoline-3,2'-quinoxaline]-2,3'-diones, which are readily available with use of isatines, malononitrile, and 1,2-phenylenediamines under quite mild conditions. This efficient approach provides excellent yields and could potentially be used for the construction of a diverse library of quinolino[3,4-b]quinoxalin-6-ones for high-throughput screening in medicinal chemistry. The reaction mechanism is explored by extensive DFT calculations.
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Affiliation(s)
- Vakhid A Mamedov
- A.E. Arbuzov Institute of Organic and Physical Chemistry, RFC Kazan Scientific Center, Russian Academy of Sciences, Arbuzov Street 8, 420088 Kazan, Russian Federation
| | - Venera R Galimullina
- A.E. Arbuzov Institute of Organic and Physical Chemistry, RFC Kazan Scientific Center, Russian Academy of Sciences, Arbuzov Street 8, 420088 Kazan, Russian Federation
| | - Zheng-Wang Qu
- Mulliken Center for Theoretical Chemistry, University of Bonn, Beringstr. 4, 53115 Bonn, Germany
| | - Hui Zhu
- Mulliken Center for Theoretical Chemistry, University of Bonn, Beringstr. 4, 53115 Bonn, Germany
| | - Victor V Syakaev
- A.E. Arbuzov Institute of Organic and Physical Chemistry, RFC Kazan Scientific Center, Russian Academy of Sciences, Arbuzov Street 8, 420088 Kazan, Russian Federation
| | - Leisan R Shamsutdinova
- A.E. Arbuzov Institute of Organic and Physical Chemistry, RFC Kazan Scientific Center, Russian Academy of Sciences, Arbuzov Street 8, 420088 Kazan, Russian Federation
| | - Mikhail A Sergeev
- A.E. Arbuzov Institute of Organic and Physical Chemistry, RFC Kazan Scientific Center, Russian Academy of Sciences, Arbuzov Street 8, 420088 Kazan, Russian Federation
| | - Il'dar Kh Rizvanov
- A.E. Arbuzov Institute of Organic and Physical Chemistry, RFC Kazan Scientific Center, Russian Academy of Sciences, Arbuzov Street 8, 420088 Kazan, Russian Federation
| | - Aidar T Gubaidullin
- A.E. Arbuzov Institute of Organic and Physical Chemistry, RFC Kazan Scientific Center, Russian Academy of Sciences, Arbuzov Street 8, 420088 Kazan, Russian Federation
| | - Oleg G Sinyashin
- A.E. Arbuzov Institute of Organic and Physical Chemistry, RFC Kazan Scientific Center, Russian Academy of Sciences, Arbuzov Street 8, 420088 Kazan, Russian Federation
| | - Stefan Grimme
- Mulliken Center for Theoretical Chemistry, University of Bonn, Beringstr. 4, 53115 Bonn, Germany
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3
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Zhang C, Liu X, Tan L. Interaction of arene ruthenium(II) complexes [(η 6-C 6H 6)Ru(L)Cl]PF 6 (L = o-fpip and p-fpip) with the RNA triplex poly(U)*poly(A)•poly(U). J Inorg Biochem 2022; 232:111813. [PMID: 35405487 DOI: 10.1016/j.jinorgbio.2022.111813] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2022] [Revised: 03/26/2022] [Accepted: 03/31/2022] [Indexed: 11/25/2022]
Abstract
To comprehend the binding properties of η6-arene Ru(II) complexes with poly(U)*poly(A)•poly(U) triplex, two arene Ru(II) complexes with different fluorine substituent positions, [(η6-C6H6)Ru(o-fpip)Cl]PF6 (Ru1,η6-C6H6 = benzene ring, o-fpip = 2-(2'‑fluorine) imidazo [4,5-f] Biver et al. (2008), Gupta et al. (2012) [1, 10] phenanthroline) and [(η6-C6H6)Ru(p-fpip)Cl]PF6 (Ru2,η6-C6H6 = benzene ring, o-fpip = 2-(4'‑fluorine) imidazo [4,5-f] Biver et al. (2008), Gupta et al. (2012) [1, 10] phenanthroline), have been synthesized and characterized in this study. The binding of Ru1 and Ru2 with poly(U)*poly(A)•poly(U) triplex has been investigated by viscosity measurement and spectroscopic methods. Analysis of UV-Vis absorption spectral titrations suggests that Ru1 and Ru2 bind to the triplex through an intercalative mode, but the binding affinity of Ru2 is slightly higher than that of Ru1, which is also verified by viscosity and EB (ethidium bromide) competition measurements. Furthermore, the thermal denaturation experiment shows that Ru1 and Ru2 increase the third-strand stabilization to a similar extent. Interestingly, the two complexes have essentially no effect on the stabilization of the template duplex. Considering the structure of Ru1 and Ru2, conceivably besides the intercalation of ligand, the force stabilizing the triplex should also involve covalent binding and electrostatic interaction. The obtained results will contribute to our understanding of the interaction of arene Ru(II) complexes with the poly(U)*poly(A)•poly(U) triplex.
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Affiliation(s)
- Chengqing Zhang
- College of Chemistry, Xiangtan University, Xiangtan 411105, People's Republic of China
| | - Xiaohua Liu
- Academic Affairs Office, Xiangtan University, Xiangtan 411105, People's Republic of China
| | - Lifeng Tan
- Key Lab of Environment-friendly Chemistry and Application in Ministry of Education, Xiangtan University, Xiangtan 411105, People's Republic of China.
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4
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Satyanarayana N, Boddu R, Sathish K, Nagaraju S, K D, Pawar R, Shirisha T, Kashinath D. Synthesis of 2-styryl-quinazoline and 3-styryl-quinoxaline based sulfonate esters via sp3 C-H activation and their evaluation for α-glucosidase inhibition. NEW J CHEM 2022. [DOI: 10.1039/d1nj05644a] [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
Synthesis of 2-styryl-quinazolines and 3-styryl-quinoxaline based sulfonates is reported via sp3 C-H functionalization in the presence of triethylamine (10 mol%). The resulting compounds were tested for the α-glucosidase enzyme inhibition...
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5
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Basu S, Chatterjee S, Bhaumik A, Mukhopadhyay C. Ultrasound‐promoted novel route to triazabenzo[b]cyclopenta[lm]fluorenes: An efficient NiFe
2
O
4
@SiO
2
–SO
3
H nanocatalyst‐assisted green synthesis. Appl Organomet Chem 2021. [DOI: 10.1002/aoc.6426] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
- Soumyadip Basu
- Department of Chemistry University of Calcutta Kolkata India
| | - Sauvik Chatterjee
- Department of Materials Science Indian Association for the Cultivation of Science Kolkata India
| | - Asim Bhaumik
- Department of Materials Science Indian Association for the Cultivation of Science Kolkata India
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6
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Laru S, Bhattacharjee S, Ghosh S, Hajra A. One-Pot Construction of Indolo[2,3- b]quinoxalines through Ruthenium-Catalyzed Ortho C-H Bond Functionalization of 2-Arylquinoxalines with Sulfonyl Azides. Org Lett 2021; 23:7624-7629. [PMID: 34543023 DOI: 10.1021/acs.orglett.1c02837] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The synthesis of N-substituted indolo[2,3-b]quinoxalines has been developed through a Ru(II)-catalyzed ortho C-H functionalization of 2-arylquinoxalines with sulfonyl azides and further oxidation with 2,3-dichloro-5,6-dicyano-1,4-benzoquinone in one pot. This double C-N bond formation strategy provides a new efficient route for the preparation of a series of biologically relevant 6H-indolo[2,3-b]quinoxaline derivatives in up to 94% yield, suggesting a broad substrate scope applicability. The preliminary mechanistic studies reveal that the sequential C-N bond formations proceed through the formation of a five-membered ruthenacyclic intermediate in the first step and a radical mechanism in the second step.
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Affiliation(s)
- Sudip Laru
- Department of Chemistry, Visva-Bharati (A Central University), Santiniketan 731235, India
| | - Suvam Bhattacharjee
- Department of Chemistry, Visva-Bharati (A Central University), Santiniketan 731235, India
| | - Sumit Ghosh
- Department of Chemistry, Visva-Bharati (A Central University), Santiniketan 731235, India
| | - Alakananda Hajra
- Department of Chemistry, Visva-Bharati (A Central University), Santiniketan 731235, India
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7
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Dong Z, Liu X, Tan L. Biophysical insights into the interaction of two enantiomers of Ru(II) complex [Ru(bpy) 2(7-CH 3-dppz)] 2+ with the RNA poly(U-A⁎U) triplex. J Biol Inorg Chem 2020; 25:1085-1095. [PMID: 33040210 DOI: 10.1007/s00775-020-01825-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2020] [Accepted: 09/28/2020] [Indexed: 01/14/2023]
Abstract
To determine the factors affecting the stabilization of RNA triple-stranded structure by chiral Ru(II) polypyridyl complexes, a new pair of enantiomers, ∆-[Ru(bpy)2(7-CH3-dppz)]2+ (∆-1; bpy = 2,2'-bipyridine, 7-CH3-dppz = 7-methyl-dipyrido[3,2-a,2',3'-c]phenazine) and Λ-[Ru(bpy)2(7-CH3-dppz)]2+ (Λ-1), have been synthesized and characterized in this work. Binding properties of the two enantiomers with the RNA poly(U-A⁎U) triplex (where "-" denotes the Watson - Crick base pairing and "⁎" denotes the Hoogsteen base pairing) have been studied by spectroscopy and hydrodynamics methods. Under the conditions used in this study, changes in absorption spectra of the two enantiomers are not very different from each other when bound to the triplex, although the binding affinity of ∆-1 is higher than that of Λ-1. Fluorescence titrations and viscosity experiments give convincing evidence for a true intercalative binding of enantiomers with the triplex. However, melting experiments indicated that the two enantiomers selectively stabilized the triplex. The enantiomer ∆-1 stabilize the template duplex and third-strand of the triplex, while it's more effective for stabilization of the template duplex. In stark contrast to ∆-1, Λ-1 stabilizes the triplex without any effect on the third-strand stabilization, suggesting this one extremely prefers to stabilize the template duplex rather than third-strand. Besides, the triplex stabilization effect of ∆-1 is more marked in comparison with that of Λ-1. The obtained results suggest that substituent effects and chiralities of Ru(II) polypyridyl complexes play important roles in the triplex stabilization. Complexes Λ/Δ-[Ru(bpy)2(7-CH3-dppz)]2+ (Λ/Δ-1; bpy = 2,2'-bipyridine, 7-CH3-dppz = 7-methyl-dipyrido[3,2-a,2',3'-c]phenazine) were prepared as stabilizers for poly(U-A ∗ U) triplex. Results suggest the triplex stabilization depends the chiral structures of Λ/Δ-1, indicating that [Ru(bpy)2(7-CH3-dppz)]2+ is a non-specific intercalator for poly(U-A ∗ U) investigated in this work.
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Affiliation(s)
- Zhan Dong
- College of Chemistry, Xiangtan University, Xiangtan, 411105, People's Republic of China
| | - Xiaohua Liu
- Academic Affairs Office, Xiangtan University, Xiangtan, 411105, People's Republic of China
| | - Lifeng Tan
- Key Lab of Environment-Friendly Chemistry and Application in Ministry of Education, Xiangtan University, Xiangtan, 411105, People's Republic of China. .,Key Laboratory for Green Organic Synthesis and Application of Hunan Province, Xiangtan University, Xiangtan, 411105, People's Republic of China.
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8
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Jiang L, Liu X, Tan L. Synthesis and characterization of chiral Ru(II) polypyridyl complexes and their binding and stabilizing effects toward triple-helical RNA. J Inorg Biochem 2020; 213:111263. [PMID: 33011626 DOI: 10.1016/j.jinorgbio.2020.111263] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2020] [Revised: 09/10/2020] [Accepted: 09/21/2020] [Indexed: 01/11/2023]
Abstract
Two novel chiral Ru(II) complexes, Λ- and Δ-[Ru(bpy)2(7-CF3-dppz)]2+ (Λ-1 and Δ-1; bpy = 2,2'-bipyridine, 7-CF3-dppz = 7-trifluoromethyl-dipyrido[3,2-a:2',3'-c]phenazine), were synthesized and characterized in this work. The binding and stabilizing effects of Λ-1 and Δ-1 toward the RNA poly(U)•poly(A)*poly(U) triplex were studied by various biophysical techniques. Absorption spectra and fluorescence quenching indicates that the binding affinity of Δ-1 is slightly higher than that Λ-1. Both enantiomers induce significant positive viscosity changes that are indicative of intercalative binding, whereas changes in the relative viscosities of the triplex are found to be more pronounced with Δ-1. Melting experiments indicate that the triplex stabilization effects of both enantiomers are significantly different from each other. With Λ-1, the stabilization of the Watson-Crick base-paired duplex (the template duplex) of the triplex shows a moderate increase, whereas the stabilization of the Hoogsteen base-paired strand (third-strand) exhibits slight decrease under the same conditions, suggesting Λ-1 prefers to stabilize the template duplex rather than third-strand. In stark contrast to Λ-1, Δ-1 can not only strongly stabilize the template duplex, but also moderately increase the third-strand stabilization, even so, which imply that Δ-1 also prefer to stabilize the template duplex instead of the third-strand. These suggest that the [Ru(bpy)2(7-CF3-dppz)]2+ is similar as a non-specific metallointercalator the triplex studied in this work. Combined with our recent research, the obtained results further indicate that Δ- enantiomers rather than Λ-ones of Ru(II) polypyridyl complexes usually exhibit stronger binding and stabilizing effects toward the triplex.
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Affiliation(s)
- Lijuan Jiang
- College of Chemistry, Xiangtan University, Xiangtan 411105, People's Republic of China
| | - Xiaohua Liu
- Academic Affairs Office, Xiangtan University, Xiangtan 411105, People's Republic of China
| | - Lifeng Tan
- Key Lab of Environment-friendly Chemistry and Application in Ministry of Education, Xiangtan University, Xiangtan 411105, People's Republic of China; Key Laboratory for Green Organic Synthesis and Application of Hunan Province, Xiangtan University, Xiangtan 411105, People's Republic of China.
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9
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Gomaa MAM, El-Katatny MH, Ali HA. Synthesis and characterization of N′-(11 H-indeno[1,2- b]quinoxalin-11-ylidene)benzohydrazonamides as potential antimicrobial agents. SYNTHETIC COMMUN 2020. [DOI: 10.1080/00397911.2020.1786122] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Mohsen A.-M. Gomaa
- Faculty of Science, Department of Chemistry, Minia University, El-Minia, Egypt
| | | | - Huda A. Ali
- Faculty of Science, Department of Chemistry, Minia University, El-Minia, Egypt
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10
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A green solid acid catalyst 12-tungstophosphoric acid H3[PW12O40] supported on g-C3N4 for synthesis of quinoxalines. RESEARCH ON CHEMICAL INTERMEDIATES 2020. [DOI: 10.1007/s11164-020-04200-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
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11
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Hojati SF, Amiri A, Fardi E. The application of copolymer‐coated graphene oxide‐Fe
3
O
4
in the highly efficient synthesis of 2′‐aminospiro[indeno[1,2‐
b
]quinoxaline‐11,4′‐[4'H] pyran]‐3′‐carbonitrile and 2′‐aminospiro[indeno‐2,4′‐[4'H]pyran]‐3′‐carbonitrile. Appl Organomet Chem 2020. [DOI: 10.1002/aoc.5604] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
| | - Amirhassan Amiri
- Department of ChemistryHakim Sabzevari University Sabzevar 96179‐76487 Iran
| | - Elham Fardi
- Department of ChemistryHakim Sabzevari University Sabzevar 96179‐76487 Iran
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12
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Ren W, Zhao Q, Yu M, Guo L, Chang H, Jiang X, Luo Y, Huang W, He G. Design and synthesis of novel spirooxindole–indenoquinoxaline derivatives as novel tryptophanyl-tRNA synthetase inhibitors. Mol Divers 2019; 24:1043-1063. [DOI: 10.1007/s11030-019-10011-2] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2019] [Accepted: 10/29/2019] [Indexed: 12/11/2022]
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13
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Mahadik SS, Chacko S, Kamble RM. 2,3‐Di(thiophen‐2‐yl)quinoxaline Amine Derivatives: Yellow‐Blue Fluorescent Materials for Applications in Organic Electronics. ChemistrySelect 2019. [DOI: 10.1002/slct.201902109] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Suraj S. Mahadik
- Department of ChemistryUniversity of Mumbai, Santacruz (E) Mumbai 400 098 India
| | - Sajeev Chacko
- Department of PhysicsUniversity of Mumbai, Santacruz (E) Mumbai 400 098 India
| | - Rajesh M. Kamble
- Department of ChemistryUniversity of Mumbai, Santacruz (E) Mumbai 400 098 India
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14
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Cheng MSQ, Su MXX, Wang MXN, Sun MZY, Ou TM. Probes and drugs that interfere with protein translation via targeting to the RNAs or RNA-protein interactions. Methods 2019; 167:124-133. [PMID: 31185274 DOI: 10.1016/j.ymeth.2019.06.004] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2018] [Revised: 04/08/2019] [Accepted: 06/05/2019] [Indexed: 11/18/2022] Open
Abstract
Protein synthesis is critical to cell survival and translation regulation is essential to post-transcriptional gene expression regulation. Disorders of this process, particularly through RNA-binding proteins, is associated with the development and progression of a number of diseases, including cancers. However, the molecular mechanisms underlying the initiation of protein synthesis are intricate, making it difficult to find a drug that interferes with this process. Chemical probes are useful in elucidating the structures of RNA-protein complex and molecular mechanism of biological events. Moreover, some of these chemical probes show certain therapeutic benefits and can be further developed as leading compounds. Here, we will briefly review the general process and mechanism of protein synthesis, and emphasis on chemical probes in examples of probing the RNA structural changes and RNA-protein interactions. Moreover, the therapeutic potential of these probes is also discussed to give a comprehensive understanding.
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Affiliation(s)
- Miss Sui-Qi Cheng
- Sun Yat-Sen University, School of Pharmaceutical Sciences, Guangzhou, Guangdong 510006, China
| | - Miss Xiao-Xuan Su
- Sun Yat-Sen University, School of Pharmaceutical Sciences, Guangzhou, Guangdong 510006, China.
| | - Miss Xiao-Na Wang
- Sun Yat-Sen University, School of Pharmaceutical Sciences, Guangzhou, Guangdong 510006, China
| | - Miss Zhi-Yin Sun
- Sun Yat-Sen University, School of Pharmaceutical Sciences, Guangzhou, Guangdong 510006, China
| | - Tian-Miao Ou
- Sun Yat-Sen University, School of Pharmaceutical Sciences, 132 Waihuan East Road, Guangzhou University City, Guangzhou, Guangdong, China.
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15
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Ma S, Wang F, Feng Y, Liu X, Tan L. Binding properties of ruthenium(II) complexes [Ru(phen)2(dicnq)]2+ and [Ru(bpy)2(dicnq)]2+ with the RNA triplex poly(U)·poly(A)*poly(U). Polyhedron 2019. [DOI: 10.1016/j.poly.2019.01.062] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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16
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Azizian J, Karimi AR, Dastkhan R, Mohammadi AA, Mohammadizadeh MR. One-pot highly diastereoselective synthesis of some novel spiro pyrrolizidines via 1,3-dipolar cycloaddition reaction of azomethine ylide. JOURNAL OF CHEMICAL RESEARCH 2019. [DOI: 10.3184/0308234041639872] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Indenoquinoxaline-11-one derivatives react with proline and N-aryl maleimides via decarboxylative azomethine ylide formation and subsequent 1,3-dipolar cycloaddition involving an exo- transition state to give new heterocyclic adducts in 71–94% yields.
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Affiliation(s)
- Javad Azizian
- Department of Chemistry, Faculty of Science, Shahid Beheshti University, PO Box 19395-4716, Tehran, Iran
| | - Ali Reza Karimi
- Department of Chemistry, Faculty of Science, Shahid Beheshti University, PO Box 19395-4716, Tehran, Iran
| | - R. Dastkhan
- Department of Chemistry, Faculty of Science, Shahid Beheshti University, PO Box 19395-4716, Tehran, Iran
| | - Ali A. Mohammadi
- Department of Chemistry, Faculty of Science, Shahid Beheshti University, PO Box 19395-4716, Tehran, Iran
| | - Mohammad R. Mohammadizadeh
- Department of Chemistry, Faculty of Science, Shahid Beheshti University, PO Box 19395-4716, Tehran, Iran
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17
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Singh PS, Chacko S, Kamble RM. The design and synthesis of 2,3-diphenylquinoxaline amine derivatives as yellow-blue emissive materials for optoelectrochemical study. NEW J CHEM 2019. [DOI: 10.1039/c9nj00248k] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Yellow-blue emitting, donor–acceptor–donor (D–A–D) based bipolar quinoxaline–amine derivatives were designed and synthesized for their optoelectronic applications.
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Affiliation(s)
- Pooja S. Singh
- Department of Chemistry
- University of Mumbai
- Santacruz (E)
- Mumbai 400 098
- India
| | - Sajeev Chacko
- Department of Physics
- University of Mumbai
- Santacruz (E)
- Mumbai 400 098
- India
| | - Rajesh M. Kamble
- Department of Chemistry
- University of Mumbai
- Santacruz (E)
- Mumbai 400 098
- India
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18
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Guan XY, Tang M, Liu ZQ, Hu W. A highly diastereoselective [5+1] annulation to 2,2,3-trisubstituted tetrahydroquinoxalines via intramolecular Mannich-type trapping of ammonium ylides. Chem Commun (Camb) 2019; 55:9809-9812. [DOI: 10.1039/c9cc04890a] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A highly diastereoselective [5+1] annulation to 2,2,3-trisubstituted tetrahydroquinoxalines was developed by us.
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Affiliation(s)
- Xiao-Yu Guan
- Key Laboratory of Applied Chemistry of Chongqing Municipality
- College of Chemistry and Chemical Engineering
- Southwest University
- Chongqing 400715
- China
| | - Min Tang
- College of Chemistry and Pharmaceutical Engineering
- ChongQing Industry Polytechnic College
- Chongqing, 401120
- China
| | - Zhang-Qin Liu
- Key Laboratory of Applied Chemistry of Chongqing Municipality
- College of Chemistry and Chemical Engineering
- Southwest University
- Chongqing 400715
- China
| | - WenHao Hu
- School of Pharmaceutical Sciences
- Sun Yat-sen University
- Guangzhou 510006
- China
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19
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Muthuselvi C, Athimoolam S, Srinivasan N, Ravikumar B, Pandiarajan S, Krishnakumar RV. Ethyl 6′-cyano-7′-phenyl-1′,6′,7′,7a'-tetrahydro-3′ H-spiro[indeno[1,2- b]quinoxaline-11,5′-pyrrolo[1,2- c]thiazole-6′-carboxylate. IUCRDATA 2018. [DOI: 10.1107/s2414314618012865] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
Abstract
In the title compound, C22H22ClN4O2S, the angle between the mean planes of the indene ring and the quinoxaline ring system is 3.93 (11)°. The five-membered indene and thiazole rings both adopt envelope conformations while the pyrrole ring adopts a twisted conformation. The two acceptor O atoms form a chelated three-centred hydrogen bond with a phenyl C atom.
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20
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Binding properties of chiral ruthenium(II) complexes Λ- and Δ-[Ru(bpy) 2dppz-11-CO 2Me] 2+ toward the triplex RNA poly(U)•poly(A)*poly(U). J Inorg Biochem 2018; 186:51-59. [PMID: 29852349 DOI: 10.1016/j.jinorgbio.2018.05.013] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2018] [Revised: 05/20/2018] [Accepted: 05/22/2018] [Indexed: 12/29/2022]
Abstract
Two chiral ruthenium(II) complexes containing ligand dppz-CO2Me (dppz-11-CO2Me = dipyrido[3,2-a,2',3'-c]phenazine-11-carboxylic acid methyl ester), Δ-[Ru(bpy)2dppz-11-CO2Me]2+ (bpy = 2,2'-bipyridine; Δ-1) and Λ-[Ru(bpy)2dppz-11-CO2Me]2+ (Λ-1), were synthesized and characterized. The binding of the two enantiomers with the triplex RNA poly(U)•poly(A)*poly(U) was carried out by various biophysical techniques. Analysis of the absorption and fluorescence features indicates that the binding strengths of the two enantiomers toward the triplex RNA differ only slightly from each other. The total increase in viscosity and shape of the curves for the triplex RNA with Λ-1 is similar to that with Δ-1, suggesting the binding modes of two enantiomers with the triplex RNA are intercalation. Thermal melting measurements indicate that the stabilization effects clearly depended on the concentrations of Λ-1 and Δ-1. However, the third-strand stabilizing effect of Δ-1 dramatically differs from that of Λ-1 when they interact with the chiral environment of the RNA triple at pH = 7.0 and [Na+] = 35 mM. Combined with the CD (CD = circular dichroism) variations of the triplex RNA with either Λ-1 or Δ-1, the reason for their different triplex stabilization effects may originate from the two enantiomers through different orientations intercalating into nucleobases of the triplex. In addition, effects of higher ionic strengths on the triplex stabilization in the absence and presence of the two enantiomers have also been studied. The results presented here may be useful for understanding the binding properties of the triplex RNA with small molecule, particularly chiral ruthenium(II) complexes.
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21
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Saidykhan A, Nazir Y, Martin WH, Gallagher RT, Bowen RD. Accelerated generation of (protonated) imines and quinoxalines by formation of C=N bonds in the microdroplets of a nebuliser. EUROPEAN JOURNAL OF MASS SPECTROMETRY (CHICHESTER, ENGLAND) 2018; 24:3-11. [PMID: 29119838 DOI: 10.1177/1469066717737314] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Ions corresponding to protonated imines appear in the positive ion electrospray mass spectra of mixtures of the parent aromatic aldehyde and arylamine. The formation of these imine products occurs readily in the electrospray source nebuliser, even without the application of a spray potential. This accelerated formation of C=N bonds in the nebuliser has been extended to encompass the preparation of quinoxalines from a range of substituted phenylenediamines and benzils. The condensation may be induced either under conventional positive ion electrospray conditions (to give the protonated quinoxalines) or when the nebuliser is disconnected from the mass spectrometer (to give the neutral quinoxaline). Ions corresponding to intermediate adducts formed by condensation of the phenylenediamine component with the protonated benzil are observed in many cases when the condensation occurs in the mass spectrometer. This finding supports an interpretation based on nucleophilic addition in droplets generated by the nebuliser.
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Affiliation(s)
- Amie Saidykhan
- 1 School of Chemistry and Biosciences, Faculty of Life Sciences, University of Bradford, Bradford, UK
| | - Yasser Nazir
- 1 School of Chemistry and Biosciences, Faculty of Life Sciences, University of Bradford, Bradford, UK
| | - William Hc Martin
- 1 School of Chemistry and Biosciences, Faculty of Life Sciences, University of Bradford, Bradford, UK
| | | | - Richard D Bowen
- 1 School of Chemistry and Biosciences, Faculty of Life Sciences, University of Bradford, Bradford, UK
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22
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Zarei M, Sepehrmansourie H, Zolfigol MA, Karamian R, Farida SHM. Novel nano-size and crab-like biological-based glycoluril with sulfonic acid tags as a reusable catalyst: its application to the synthesis of new mono- and bis-spiropyrans and theirin vitrobiological studies. NEW J CHEM 2018. [DOI: 10.1039/c8nj02470g] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Herein novel crab-like biological-based glycoluril with sulfonic acid tags was prepared in nano-size form and fully characterizedviaseveral techniques.
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Affiliation(s)
- Mahmoud Zarei
- Department of Organic Chemistry
- Faculty of Chemistry
- Bu-Ali Sina University
- Hamedan 6517838683
- Iran
| | - Hassan Sepehrmansourie
- Department of Organic Chemistry
- Faculty of Chemistry
- Bu-Ali Sina University
- Hamedan 6517838683
- Iran
| | - Mohammad Ali Zolfigol
- Department of Organic Chemistry
- Faculty of Chemistry
- Bu-Ali Sina University
- Hamedan 6517838683
- Iran
| | - Roya Karamian
- Department of Biology
- Faculty of Science
- Bu-Ali Sina University
- Hamedan
- Iran
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23
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Metal-free regioselective construction of diazabenzo[e]acephenanthrylene-1,2-dicarboxylates via a phosphine-mediated cycloadditon. Tetrahedron 2017. [DOI: 10.1016/j.tet.2017.06.010] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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24
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Bhutia ZT, Prasannakumar G, Das A, Biswas M, Chatterjee A, Banerjee M. A Facile, Catalyst-Free Mechano-Synthesis of Quinoxalines and their In-Vitro Antibacterial Activity Study. ChemistrySelect 2017. [DOI: 10.1002/slct.201601672] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Zigmee T. Bhutia
- Department of Chemistry, BITS; Pilani-K. K. Birla; Goa Campus; Goa - 403726 India
| | | | - Avijit Das
- Department of Biological Sciences, BITS; Pilani-K. K. Birla; Goa Campus; Goa - 403 726 India
| | - Malabika Biswas
- Department of Biological Sciences, BITS; Pilani-K. K. Birla; Goa Campus; Goa - 403 726 India
| | - Amrita Chatterjee
- Department of Chemistry, BITS; Pilani-K. K. Birla; Goa Campus; Goa - 403726 India
| | - Mainak Banerjee
- Department of Chemistry, BITS; Pilani-K. K. Birla; Goa Campus; Goa - 403726 India
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25
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Poddar R, Jain A, Kidwai M. Bis[(l)prolinate-N,O]Zn: A water-soluble and recycle catalyst for various organic transformations. J Adv Res 2017; 8:245-270. [PMID: 28289549 PMCID: PMC5338870 DOI: 10.1016/j.jare.2016.12.005] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2016] [Revised: 11/28/2016] [Accepted: 12/20/2016] [Indexed: 11/17/2022] Open
Abstract
Under the green chemistry perspective, bis[(l)prolinate-N,O]Zn (also called zinc-proline or Zn[(l)-pro]2) has proven its competence as a promising alternative in a plethora of applications such as catalyst or promoter. Owing to its biodegradable and non-toxic nature of bis[(l)prolinate-N,O]Zn, it is being actively investigated as a water soluble green catalyst for synthetic chemistry. Bis[(l)prolinate-N,O]Zn are readily utilized under mild conditions and have high selectivity and reactivity with broad range of substrate acceptance to make it better reaction medium for a wide variety of organic transformations. This Review summarizes the till date literature on its synthesis, characterization, and its catalytic role in various organic reactions.
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Affiliation(s)
- Roona Poddar
- Department of Chemistry, University of Delhi, Delhi 110007, India
| | - Arti Jain
- Department of Chemistry, Daulat Ram College, University of Delhi, Delhi 110007, India
| | - Mazaahir Kidwai
- Department of Chemistry, University of Delhi, Delhi 110007, India
- Corresponding author. Fax: +91 1127666235.
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26
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Akondi AM, Mekala S, Kantam ML, Trivedi R, Raju Chowhan L, Das A. An expedient microwave assisted regio- and stereoselective synthesis of spiroquinoxaline pyrrolizine derivatives and their AChE inhibitory activity. NEW J CHEM 2017. [DOI: 10.1039/c6nj02869a] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
We report here an efficient protocol for the one-pot facile synthesis of spiro[indeno[1,2-b]quinoxaline-11,3′-pyrrolizine]heterocyclic scaffolds and their AChE inhibitory studies.
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Affiliation(s)
- Adinarayana Murthy Akondi
- Inorganic and Physical Chemistry Division
- CSIR-Indian Institute of Chemical Technology
- Hyderabad 500007
- India
| | - Sowmya Mekala
- Centre for Chemical Biology
- CSIR-Indian Institute of Chemical Technology
- Hyderabad 500007
- India
- Academy of Scientific and Innovative Research (AcSIR)
| | - Mannepalli Lakshmi Kantam
- Inorganic and Physical Chemistry Division
- CSIR-Indian Institute of Chemical Technology
- Hyderabad 500007
- India
- Institute of Chemical Technology
| | - Rajiv Trivedi
- Inorganic and Physical Chemistry Division
- CSIR-Indian Institute of Chemical Technology
- Hyderabad 500007
- India
| | - L. Raju Chowhan
- School of Chemical Sciences
- Central University Gujarat
- Gandhinagar
- India
| | - Amitava Das
- Centre for Chemical Biology
- CSIR-Indian Institute of Chemical Technology
- Hyderabad 500007
- India
- Academy of Scientific and Innovative Research (AcSIR)
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27
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Gu Z, Li Y, Ma S, Li S, Zhou G, Ding S, Zhang J, Wang S, Zhou C. Synthesis, cytotoxic evaluation and DNA binding study of 9-fluoro-6H-indolo[2,3-b]quinoxaline derivatives. RSC Adv 2017. [DOI: 10.1039/c7ra08138c] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023] Open
Abstract
New quaternary ammonium salts of 9-fluoro-6H-indolo[2,3-b] derivatives were synthesized. These compounds possessed enhanced DNA binding ability and improved antitumor activity.
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Affiliation(s)
- Zhenyu Gu
- Key Laboratory of Chemical Biology of Hebei Province
- Key Laboratory of Medicinal Chemistry and Molecular Diagnosis
- Ministry of Education
- College of Chemistry & Environmental Science
- Hebei University
| | - Yanci Li
- Key Laboratory of Chemical Biology of Hebei Province
- Key Laboratory of Medicinal Chemistry and Molecular Diagnosis
- Ministry of Education
- College of Chemistry & Environmental Science
- Hebei University
| | - Songliang Ma
- Key Laboratory of Chemical Biology of Hebei Province
- Key Laboratory of Medicinal Chemistry and Molecular Diagnosis
- Ministry of Education
- College of Chemistry & Environmental Science
- Hebei University
| | - Shenghui Li
- Key Laboratory of Chemical Biology of Hebei Province
- Key Laboratory of Medicinal Chemistry and Molecular Diagnosis
- Ministry of Education
- College of Chemistry & Environmental Science
- Hebei University
| | - Guoqiang Zhou
- Key Laboratory of Chemical Biology of Hebei Province
- Key Laboratory of Medicinal Chemistry and Molecular Diagnosis
- Ministry of Education
- College of Chemistry & Environmental Science
- Hebei University
| | - Shan Ding
- Key Laboratory of Chemical Biology of Hebei Province
- Key Laboratory of Medicinal Chemistry and Molecular Diagnosis
- Ministry of Education
- College of Chemistry & Environmental Science
- Hebei University
| | - Jinchao Zhang
- Key Laboratory of Chemical Biology of Hebei Province
- Key Laboratory of Medicinal Chemistry and Molecular Diagnosis
- Ministry of Education
- College of Chemistry & Environmental Science
- Hebei University
| | - Shuxiang Wang
- Key Laboratory of Chemical Biology of Hebei Province
- Key Laboratory of Medicinal Chemistry and Molecular Diagnosis
- Ministry of Education
- College of Chemistry & Environmental Science
- Hebei University
| | - Chuanqi Zhou
- Key Laboratory of Chemical Biology of Hebei Province
- Key Laboratory of Medicinal Chemistry and Molecular Diagnosis
- Ministry of Education
- College of Chemistry & Environmental Science
- Hebei University
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28
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Ranjan N, Arya DP. Linker dependent intercalation of bisbenzimidazole-aminosugars in an RNA duplex; selectivity in RNA vs. DNA binding. Bioorg Med Chem Lett 2016; 26:5989-5994. [PMID: 27884695 PMCID: PMC6201841 DOI: 10.1016/j.bmcl.2016.10.076] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2016] [Revised: 10/24/2016] [Accepted: 10/25/2016] [Indexed: 01/08/2023]
Abstract
Neomycin and Hoechst 33258 are two well-known nucleic acid binders that interact with RNA and DNA duplexes with high affinities respectively. In this manuscript, we report that covalent attachment of bisbenzimidazole unit derived from Hoechst 33258 to neomycin leads to intercalative binding of the bisbenzimidazole unit (oriented at 64-74° with respected to the RNA helical axis) in a linker length dependent manner. The dual binding and intercalation of conjugates were supported by thermal denaturation, CD, LD and UV-Vis absorption experiments. These studies highlight the importance of linker length in dual recognition by conjugates, for effective RNA recognition, which can lead to novel ways of recognizing RNA structures. Additionally, the ligand library screens also identify DNA and RNA selective compounds, with compound 9, containing a long linker, showing a 20.3°C change in RNA duplex Tm with only a 13.0°C change in Tm for the corresponding DNA duplex. Significantly, the shorter linker in compound 3 shows almost the reverse trend, a 23.8°C change in DNA Tm, with only a 9.1°C change in Tm for the corresponding RNA duplex.
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Affiliation(s)
- Nihar Ranjan
- Laboratory of Bioorganic and Medicinal Chemistry, Department of Chemistry, Clemson University, Clemson, SC 29634, United States
| | - Dev P Arya
- Laboratory of Bioorganic and Medicinal Chemistry, Department of Chemistry, Clemson University, Clemson, SC 29634, United States.
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29
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Moosavi-Zare AR, Zolfigol MA, Noroozizadeh E, Zarei M, Karamian R, Asadbegy M. Synthesis and characterization of acetic acid functionalized poly (4-vinylpyridinium) salt as new catalyst for the synthesis of spiropyran derivatives and their biological activity. ACTA ACUST UNITED AC 2016. [DOI: 10.1016/j.molcata.2016.10.011] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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30
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Chandralekha K, Sureshbabu AR, Gavaskar D, Lakshmi S. Crystal structure of methyl 3'-benzamido-4'-(4-meth-oxy-phen-yl)-1'-methyl-spiro-[indeno-[1,2- b]quinoxaline-11,2'-pyrrolidine]-3'-carboxyl-ate. Acta Crystallogr E Crystallogr Commun 2016; 72:1257-1259. [PMID: 27920911 PMCID: PMC5120701 DOI: 10.1107/s2056989016012469] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2016] [Accepted: 08/02/2016] [Indexed: 11/18/2022]
Abstract
In the title compound, C35H30N4O3, the spiro C atom connects the five-membered pyrrolidine ring and the indeno-quinoxaline ring system. The pyrrolidine ring adopts a twist conformation. An intra-molecular N-H⋯N inter-action between the amino group and the pyrazine ring is observed. In the crystal, mol-ecules are linked by a pairs of C-H⋯O hydrogen bonds, forming inversion dimers.
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Affiliation(s)
- Kuppan Chandralekha
- Research Department of Physics, S. D. N. B. Vaishnav College for Women, Chromepet, Chennai 600 004, India
| | | | - Deivasigamani Gavaskar
- Department of Organic Chemistry, University of Madras, Guindy Campus, Chennai 600 025, India
| | - Srinivasakannan Lakshmi
- Research Department of Physics, S. D. N. B. Vaishnav College for Women, Chromepet, Chennai 600 004, India
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31
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Gavaskar D, Babu ARS, Raghunathan R, Dharani M, Balasubramanian S. An expedient sequential one-pot four component synthesis of novel steroidal spiro-pyrrolidine heterocycles in ionic liquid. Steroids 2016; 109:1-6. [PMID: 26930574 DOI: 10.1016/j.steroids.2016.02.010] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/14/2015] [Revised: 02/04/2016] [Accepted: 02/12/2016] [Indexed: 01/02/2023]
Abstract
A facile one-pot synthesis of novel steroidal dispiro-indenoquinoxaline pyrrolidines via multicomponent-[3+2]-cycloaddition of azomethine ylides in ionic liquid is described. The structure of cycloadduct is confirmed by IR, (1)H NMR, (13)C NMR, high resolution mass spectroscopy and elemental analysis.
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Affiliation(s)
- D Gavaskar
- Department of Organic Chemistry, University of Madras, Guindy Campus, Chennai, India
| | - A R Suresh Babu
- Institute of Molecular and Cellular Biology (IBMC), University of Strasbourg, Strasbourg, France
| | - R Raghunathan
- Department of Organic Chemistry, University of Madras, Guindy Campus, Chennai, India.
| | - M Dharani
- Department of Inorganic Chemistry, University of Madras, Guindy Campus, Chennai, India
| | - S Balasubramanian
- Department of Inorganic Chemistry, University of Madras, Guindy Campus, Chennai, India
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32
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TAMAMI B, SARDARIAN A, ATAOLLAHI E. Synthesis and application of polyvinylimidazole-based Br{\o}nsted acidic ionic liquid grafted silica as an efficient heterogeneous catalyst in the preparation of quinoxaline derivatives. Turk J Chem 2016. [DOI: 10.3906/kim-1504-40] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
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33
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Efficient synthesis of 2-arylindoles, 2-arylimidazo[1,2-a]pyridines and 2-arylquinoxalines, and their bis-derivatives using [Hmim]OTf ionic liquid supported on nano-silica as a reusable catalyst. JOURNAL OF THE IRANIAN CHEMICAL SOCIETY 2015. [DOI: 10.1007/s13738-015-0603-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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34
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35
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Hamzehloueian M, Sarrafi Y, Aghaei Z. An experimental and theoretical study on the regioselective synthesis of a new class of spiropyrrolothiazoles with quinoxaline motifs via a 1,3-dipolar cycloaddition reaction. An evaluation of DFT methods. RSC Adv 2015. [DOI: 10.1039/c5ra14071d] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Evaluation of B3LYP/6-31G(d,p), wB97xD/6-31G(d,p) and M06-2X/6-31G(d,p) methods revealed the importance of π/π interactions in regio- and stereoselectivity of cycloaddition reactions.
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Affiliation(s)
| | - Yaghoub Sarrafi
- Department of Organic Chemistry
- Faculty of Chemistry
- University of Mazandaran
- 47416 Babolsar
- Iran
| | - Zahra Aghaei
- Department of Organic Chemistry
- Faculty of Chemistry
- University of Mazandaran
- 47416 Babolsar
- Iran
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36
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Qu J, Wu P, Tang D, Meng X, Chen Y, Guo S, Chen B. I2-Catalyzed diamination of acetyl-compounds for the synthesis of multi-substituted imidazoles. NEW J CHEM 2015. [DOI: 10.1039/c5nj00910c] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We have successfully developed the I2-catalysed synthesis of substituted imidazole derivatives from amidines and ketones in good to excellent yields and 100% regioselectivity.
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Affiliation(s)
- Jinpeng Qu
- State Key Laboratory of Applied Organic Chemistry
- Lanzhou University
- Lanzhou
- P. R. China
- Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province
| | - Ping Wu
- State Key Laboratory of Applied Organic Chemistry
- Lanzhou University
- Lanzhou
- P. R. China
- Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province
| | - Dong Tang
- State Key Laboratory of Applied Organic Chemistry
- Lanzhou University
- Lanzhou
- P. R. China
- Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province
| | - Xu Meng
- State Key Laboratory of Oxo Synthesis and Selective Oxidation
- Lanzhou Institute of Chemical Physics
- Chinese Academy of Sciences
- Lanzhou
- P. R. China
| | - Yongxin Chen
- Key Laboratory of Petroleum Resources Research
- Institute of Geology and Geophysics
- Lanzhou 730000
- China
| | - Shuaibo Guo
- State Key Laboratory of Applied Organic Chemistry
- Lanzhou University
- Lanzhou
- P. R. China
- Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province
| | - Baohua Chen
- State Key Laboratory of Applied Organic Chemistry
- Lanzhou University
- Lanzhou
- P. R. China
- Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province
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37
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Gavaskar D, Suresh Babu A, Raghunathan R, Dharani M, Balasubramanian S. Ionic liquid accelerated multicomponent sequential assembly of ferrocene grafted spiro-heterocycles. J Organomet Chem 2014. [DOI: 10.1016/j.jorganchem.2014.06.015] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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38
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Saleh N, Khowdiary M, Badawi AF. Synthesis and Antitumor and Surface Activity of Novel Tetrachloro Metallate Complexes of Sulfaquinoxaline with Co(II), Cu(II), or Sn(II) Chlorides. TENSIDE SURFACT DET 2014. [DOI: 10.3139/113.110313] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
AbstractNew sulfonamide tetrachloro metallate complexes that might possess strong carbonic anhydrase (CA) inhibitory properties were synthesized by the reaction of 4-amino-N-(quinoxalin-2-yl) benzene sulfonamide (sulfaquinoxaline) hydrochloride with different metal chlorides, i.e. CoCl2, CuCl2 or SnCl2. The produced metal complexes of the sulfonamide derivative, containing divalent cations, were characterized by standard procedures. These metal complexes might possess topical antiglaucoma properties which might make them more effective as pharmacological agents. The synthesized complexes exhibited significant cytotoxic activity against colon HCT-116 human cell line. Surface properties of these surfactants were investigated. The surface properties studies included critical micelle concentration (CMC), maximum surface excess (Γmax), minimum surface area (Amin). Free energy of micellization (ΔG°mic) and adsorption (ΔG°ads) were calculated.
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Affiliation(s)
- Nashwa Saleh
- 1Department of Chemistry, Faculty of Science (Girl's), Al-Azhar University, Nasr City, Cairo, Egypt
| | - Manal Khowdiary
- 2Applied Surfactant Laboratory, Egyptian Petroleum, Research Institute, Nasr City, Cairo, Egypt
| | - Abdel Fattah Badawi
- 2Applied Surfactant Laboratory, Egyptian Petroleum, Research Institute, Nasr City, Cairo, Egypt
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39
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Moemeni M, Arvinnezhad H, Samadi S, Salahi F, Jadidi K, Notash B. Highly Regioselective and Diastereoselective, One-Pot, Four-Component Synthesis of Novel Spiroindenoquinoxalineindolizidine Derivatives. J Heterocycl Chem 2014. [DOI: 10.1002/jhet.2121] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- Mehdi Moemeni
- Department of Chemistry, Faculty of Sciences; Shahid Beheshti University; G. C., P.O. Box 1983963113 Tehran Iran
| | - Hamid Arvinnezhad
- Department of Chemistry, Faculty of Sciences; Shahid Beheshti University; G. C., P.O. Box 1983963113 Tehran Iran
| | - Saadi Samadi
- Department of Chemistry, Faculty of Sciences; Shahid Beheshti University; G. C., P.O. Box 1983963113 Tehran Iran
| | - Farbod Salahi
- Department of Chemistry, Faculty of Sciences; Shahid Beheshti University; G. C., P.O. Box 1983963113 Tehran Iran
| | - Khosrow Jadidi
- Department of Chemistry, Faculty of Sciences; Shahid Beheshti University; G. C., P.O. Box 1983963113 Tehran Iran
| | - Behrouz Notash
- Department of Chemistry, Faculty of Sciences; Shahid Beheshti University; G. C., P.O. Box 1983963113 Tehran Iran
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Lanka S, Thennarasu S, Perumal PT. Regioselective synthesis of novel dispiropyrrolidine and dispiropyrrolizidine oxindole derivatives via azomethine ylide specific [3+2]-cycloaddition. RSC Adv 2014. [DOI: 10.1039/c3ra44953j] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
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Khazaei A, Massoudi A, Chegeni M. Synthesis of Bisindolylindeno[1,2-b]quinoxaline and Bisindolylindeno[3,4-b]pyrazine with Poly(N,N′-dibromo-N-ethylnaphthyl-2,7-disulfonamide). SYNTHETIC COMMUN 2013. [DOI: 10.1080/00397911.2013.829237] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Ardeshir Khazaei
- a Faculty of Chemistry , Bu-Ali Sina University , Hamedan , Iran
| | - Abdolhossien Massoudi
- b Department of Chemistry, Faculty of Science , Payame Noor University (PNU) , Tehran , Iran
| | - Mahdieh Chegeni
- b Department of Chemistry, Faculty of Science , Payame Noor University (PNU) , Tehran , Iran
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Amanpour T, Bazgir A, Ardekani AM, Ghahremanzadeh R. Pseudo five-component synthesis of 5-phenyldihydrospiro[diindenopyridine-indenoquinoxaline]dione derivatives via a one-pot condensation reaction. MONATSHEFTE FUR CHEMIE 2013. [DOI: 10.1007/s00706-013-1118-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Suresh Babu A, Gavaskar D, Raghunathan R. An expedient ultrasonic assisted one-pot four component synthesis of novel ferrocene grafted pyrrolidine heterocycles via [3 + 2]-cycloaddition of azomethine ylides. J Organomet Chem 2013. [DOI: 10.1016/j.jorganchem.2013.08.014] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Bardajee GR, Mizani F, Rostami I, Mohamadi A. FeCl3Mediated Simple, Green, and Efficient Method for the One-Pot Synthesis of Pyrazine-based Polycyclic Aromatic Compounds under Mild Conditions. Polycycl Aromat Compd 2013. [DOI: 10.1080/10406638.2013.791995] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Liu X, Wang D, Chen Y, Tang D, Chen B. Iron(III)-Catalyzed Synthesis of 1,2,4-Trisubstituted Imidazoles through the Reactions of Amidines and Aldehydes in Air. Adv Synth Catal 2013. [DOI: 10.1002/adsc.201300590] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Biver T. Stabilisation of non-canonical structures of nucleic acids by metal ions and small molecules. Coord Chem Rev 2013. [DOI: 10.1016/j.ccr.2013.04.016] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Osman AMA, Pedersen EB, Bergman J. Synthesis of a new intercalating nucleic acid 6H-INDOLO[2,3-b] quinoxaline oligonucleotides to improve thermal stability of Hoogsteen-type triplexes. NUCLEOSIDES NUCLEOTIDES & NUCLEIC ACIDS 2013; 32:98-108. [PMID: 23448144 DOI: 10.1080/15257770.2013.765013] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
A new intercalating nucleic acid monomer X was obtained in high yield starting from alkylation of 4-iodophenol with (S)-(+)-2-(2,2-dimethyl-1,3-dioxolan-4-yl)ethanol under Mitsunobu conditions followed by hydrolysis with 80% aqueous acetic acid to give a diol which was coupled under Sonogashira conditions with trimethylsilylacetylene (TMSA) to achieve the TMS protected (S)-4-(4-((trimethylsilyl)ethynyl)phenoxy)butane-1,2-diol. Tetrabutylammonium flouride was used to remove the silyl protecting group to obtain (S)-4-(4-ethynylphenoxy)butane-1,2-diol which was coupled under Sonogashira conditions with 2-(9-bromo-6H-indolo[2,3-b]quinoxalin-6-yl)-N,N-dimethylethanamine to achieve (S)-4-(4-((6-(2-(dimethylamino)ethyl)-6H-indolo[2,3-b]quinoxalin-9-yl)ethynyl)phenoxy)butane-1,2-diol. This compound was tritylated with 4,4'-dimethoxytrityl chloride followed by treatment with 2-cyanoethyltetraisopropylphosphordiamidite in the presence of N,N'-diisopropyl ammonium tetrazolide to afford the corresponding phosphoramidite. This phosphoramidite was used to insert the monomer X into an oligonucleotide which was used for thermal denaturation studies of a corresponding parallel triplex.
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Affiliation(s)
- Amany M A Osman
- Department of Physics, Nucleic Acid Center, University of Southern Denmark, Odense, Denmark
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Hasaninejad A, Golzar N, Zare A. One-Pot, Four-Component Synthesis of Novel Spiro[indeno[2,1-b]quinoxaline-11,4′-pyran]-2′-amines. J Heterocycl Chem 2013. [DOI: 10.1002/jhet.1604] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Alireza Hasaninejad
- Department of Chemistry, Faculty of Sciences; Persian Gulf University; Bushehr; 75169; Iran
| | - Nooshin Golzar
- Department of Chemistry, Faculty of Sciences; Persian Gulf University; Bushehr; 75169; Iran
| | - Abdolkarim Zare
- Department of Chemistry; Payame Noor University; PO Box 19395-3697; Tehran; Bushehr; 1698; Iran
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Cycloadditions and condensations as essential tools in spiropyrazoline synthesis. Eur J Med Chem 2013; 63:347-77. [DOI: 10.1016/j.ejmech.2013.01.059] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2012] [Revised: 01/12/2013] [Accepted: 01/15/2013] [Indexed: 11/17/2022]
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Eftekhari-Sis B, Zirak M, Akbari A. Arylglyoxals in Synthesis of Heterocyclic Compounds. Chem Rev 2013; 113:2958-3043. [DOI: 10.1021/cr300176g] [Citation(s) in RCA: 228] [Impact Index Per Article: 20.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Bagher Eftekhari-Sis
- Department of Chemistry, Faculty
of Science, University of Maragheh, Golshahr,
P.O. Box. 55181-83111, Maragheh, Iran
| | - Maryam Zirak
- Department of Chemistry, Payame Noor University, P.O. Box 19395-3697, Tehran,
Iran
| | - Ali Akbari
- Department of Chemistry, Faculty
of Science, University of Maragheh, Golshahr,
P.O. Box. 55181-83111, Maragheh, Iran
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