1
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Chniti S, Pongrácz P, Kollár L, Bényei A, Dörnyei Á, Takács A. Synthesis of Chroman-2,4-diones via Ring-Opening/Ring-Closing Reaction Involving Palladium-Catalyzed Intramolecular Aryloxycarbonylation. J Org Chem 2024; 89:1175-1183. [PMID: 38193890 PMCID: PMC10804402 DOI: 10.1021/acs.joc.3c02337] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2023] [Revised: 12/06/2023] [Accepted: 12/21/2023] [Indexed: 01/10/2024]
Abstract
Palladium-catalyzed aminocarbonylation of 3-iodochromone was studied in the presence of primary and secondary amines using atmospheric pressure of carbon monoxide as a carbonyl source. This procedure successfully provided a library of chromone-3-carboxamides and 3-substituted chroman-2,4-diones in 40 to 92% isolated yields. The reaction proceeded via highly chemoselective aminocarbonylation (up to 100%) in the presence of secondary amines by using monodentate or bidentate phosphine ligands. The tendency of 3-iodochromone substrate to undergo ANRORC rearrangement with N-nucleophiles was crucial to shift the reaction toward an unprecedented chemoselective carbonylative transformation, where a late-stage carbonyl insertion is favored concomitantly to the last ring-closure step. The proposed aza-Michael addition/ring-opening/intramolecular aryloxycarbonylation sequence showed compatibility, uniquely, to primary amines when XantPhos was used as a ligand. The solid-state structures of chromone-3-carboxamide (2a) and chroman-2,4-dione (3s) were undoubtedly established by single-crystal XRD analysis. A catalytic cycle was proposed to rationalize the formation of the two types of carbonylated compounds.
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Affiliation(s)
- Sami Chniti
- Department
of General and Inorganic Chemistry, Faculty of Sciences, University of Pécs, Ifjúság u. 6., Pécs H-7624, Hungary
| | - Péter Pongrácz
- Department
of General and Inorganic Chemistry, Faculty of Sciences, University of Pécs, Ifjúság u. 6., Pécs H-7624, Hungary
| | - László Kollár
- Department
of General and Inorganic Chemistry, Faculty of Sciences, University of Pécs, Ifjúság u. 6., Pécs H-7624, Hungary
- János
Szentágothai Research Centre, University
of Pécs, Ifjúság
u. 20., Pécs H-7624, Hungary
- HUN-REN-PTE
Research Group for Selective Chemical Syntheses, Ifjúság u. 6., Pécs H-7624, Hungary
| | - Attila Bényei
- Department
of Physical Chemistry, University of Debrecen, Egyetem tér 1., Debrecen H-4032, Hungary
| | - Ágnes Dörnyei
- Department
of Analytical and Environmental Chemistry, Faculty of Sciences, University of Pécs, Ifjúság u. 6., Pécs H-7624, Hungary
| | - Attila Takács
- János
Szentágothai Research Centre, University
of Pécs, Ifjúság
u. 20., Pécs H-7624, Hungary
- HUN-REN-PTE
Research Group for Selective Chemical Syntheses, Ifjúság u. 6., Pécs H-7624, Hungary
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2
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Steparuk EV, Meshcheryakova EA, Viktorova VV, Ulitko MV, Obydennov DL, Sosnovskikh VY. Oxidative Ring-Opening Transformation of 5-Acyl-4-pyrones as an Approach for the Tunable Synthesis of Hydroxylated Pyrones and Furans. J Org Chem 2023; 88:11590-11602. [PMID: 37504952 DOI: 10.1021/acs.joc.3c00907] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/29/2023]
Abstract
A selective and tunable approach for oxidation of 4-pyrones has been developed via ring-opening transformations leading to various hydroxylated oxaheterocycles. The first step of the strategy includes the base-catalyzed epoxidation of 5-acyl-4-pyrones in the presence of hydrogen peroxide for the effective synthesis of pyrone epoxides in high yields. The epoxides bearing the CO2Et group are reactive molecules that can undergo both pyrone and oxirane ring-opening via deformylation to produce hydroxylated 2-pyrones or 4-pyrones. The acid-promoted transformation led to 3-hydroxy-4-pyrones (24-76% yields), whereas the K2CO3-catalyzed ring-opening process of 2-carbethoxy-4-pyrone epoxides proceeded as an attack of alcohol at the C-3 position bearing the CO2Et group to give functionalized 6-acyl-5-hydroxy-2-pyrones (27-87% yields). The base-catalyzed reaction of 2-aryl-4-pyrone epoxides was followed by ring contraction and the dearoylation process to produce 3-hydroxyfuran-2-carbaldehydes in 42-80% yields. The transformation of 3-aroylchromone epoxides led to flavonols and 3-hydroxybenzofuran-2-carbaldehyde in the acidic and basic conditions, respectively. The prepared hydroxylated heterocycles demonstrated high reactivity for further transformations and low cytotoxicity and are promising fluorophores or UV filters.
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Affiliation(s)
- Elena V Steparuk
- Institute of Natural Sciences and Mathematics, Ural Federal University, 51 Lenina Ave., 620000 Ekaterinburg, Russian Federation
| | - Ekaterina A Meshcheryakova
- Institute of Natural Sciences and Mathematics, Ural Federal University, 51 Lenina Ave., 620000 Ekaterinburg, Russian Federation
| | - Viktoria V Viktorova
- Institute of Natural Sciences and Mathematics, Ural Federal University, 51 Lenina Ave., 620000 Ekaterinburg, Russian Federation
| | - Maria V Ulitko
- Institute of Natural Sciences and Mathematics, Ural Federal University, 51 Lenina Ave., 620000 Ekaterinburg, Russian Federation
| | - Dmitrii L Obydennov
- Institute of Natural Sciences and Mathematics, Ural Federal University, 51 Lenina Ave., 620000 Ekaterinburg, Russian Federation
| | - Vyacheslav Y Sosnovskikh
- Institute of Natural Sciences and Mathematics, Ural Federal University, 51 Lenina Ave., 620000 Ekaterinburg, Russian Federation
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3
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Andrade JS, Junior PAS, Pereira FJ, Murta SMF, Correa RS, Taylor JG. Trypanocidal activity of chromenepyrazole derivatives. CHEMICAL PAPERS 2022. [DOI: 10.1007/s11696-022-02283-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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4
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Gudipati R, Jayaram V, Raghavulu K, Bhoot D, Basavaiah K, Yennam S, Behera M. Iron Promoted Ring Opening and Ring Closing Cascade (ROCC) Reaction of
Ortho
‐Carboxy‐Isoxazoles Leading to Isoindolinone Derivatives. European J Org Chem 2021. [DOI: 10.1002/ejoc.202100716] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- Ramakrishna Gudipati
- Chemistry Services Aragen Life Sciences (Formerly known as GVK Biosciences), Plot No. 125 (part)&126, IDA, Mallapur Hyderabad Telangana 500076 India
- Department of Inorganic & Analytical Chemistry Andhra University, Waltair Junction Visakhapatnam Andhra Pradesh 530003 India
| | - Vankudoth Jayaram
- Chemistry Services Aragen Life Sciences (Formerly known as GVK Biosciences), Plot No. 125 (part)&126, IDA, Mallapur Hyderabad Telangana 500076 India
| | - Karri Raghavulu
- Chemistry Services Aragen Life Sciences (Formerly known as GVK Biosciences), Plot No. 125 (part)&126, IDA, Mallapur Hyderabad Telangana 500076 India
- Department of Inorganic & Analytical Chemistry Andhra University, Waltair Junction Visakhapatnam Andhra Pradesh 530003 India
| | - Dinesh Bhoot
- Chemistry Services Aragen Life Sciences (Formerly known as GVK Biosciences), Plot No. 125 (part)&126, IDA, Mallapur Hyderabad Telangana 500076 India
| | - Keloth Basavaiah
- Department of Inorganic & Analytical Chemistry Andhra University, Waltair Junction Visakhapatnam Andhra Pradesh 530003 India
| | - Satyanarayana Yennam
- Chemistry Services Aragen Life Sciences (Formerly known as GVK Biosciences), Plot No. 125 (part)&126, IDA, Mallapur Hyderabad Telangana 500076 India
| | - Manoranjan Behera
- Chemistry Services Aragen Life Sciences (Formerly known as GVK Biosciences), Plot No. 125 (part)&126, IDA, Mallapur Hyderabad Telangana 500076 India
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5
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Chernov NM, Shutov RV, Sipkina NY, Krivchun MN, Yakovlev IP. A Flexible Synthetic Approach to Fluorescent Chromeno[4,3-b]pyridines and Pyrano[3,2-c]chromenes from Electron-Deficient 3-Vinylchromones. Chempluschem 2021; 86:1256-1266. [PMID: 34472730 DOI: 10.1002/cplu.202100296] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Revised: 08/18/2021] [Indexed: 11/09/2022]
Abstract
We report a flexible approach to the synthesis of phenanthrene-like heterocycles through organocatalytic ANRORC (Addition of the Nucleophile, Ring Opening, and Ring Closure) reaction of electron-deficient 3-vinylchromones with cyanoacetamide. Addition of highly basic DBU (1,8-diazabicyclo[5.4.0]undec-7-ene) or tetramethylguanidine (TMG) at 80 °C leads to chromeno[4,3-b]pyridines in good yields, whereas Et3 N at 20 °C made it possible to obtain the less accessible pyrano[3,2-c]chromenes and their 2-imines. The synthesis proceeds in mild conditions (EtOH, 20-80 °C), is versatile and applicable for a wide scope of reactants. The obtained compounds show bright fluorescence in the range 460-595 nm with high quantum yields (up to 0.84) in various solvents (MeCN, DMSO, EtOH, H2 O).
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Affiliation(s)
- Nikita M Chernov
- Organic Chemistry Department, Saint-Petersburg State Chemical Pharmaceutical University, Prof. Popov st., 14, Saint-Petersburg, 197376, Russia
| | - Roman V Shutov
- Organic Chemistry Department, Saint-Petersburg State Chemical Pharmaceutical University, Prof. Popov st., 14, Saint-Petersburg, 197376, Russia
| | - Nadezhda Yu Sipkina
- Analytical Center, Saint-Petersburg State Chemical Pharmaceutical University, Prof. Popov st., 14, Saint-Petersburg, 197376, Russia
| | - Maxim N Krivchun
- Organic Chemistry Department, Saint-Petersburg State Institute of Technology, Moskovsky av., 26, Saint-Petersburg, 190013, Russia
| | - Igor P Yakovlev
- Organic Chemistry Department, Saint-Petersburg State Chemical Pharmaceutical University, Prof. Popov st., 14, Saint-Petersburg, 197376, Russia
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6
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Liu Y, Ding L, He J, Zhang Z, Deng Y, He S, Yan X. A new antibacterial chromone from a marine sponge-associated fungus Aspergillus sp. LS57. Fitoterapia 2021; 154:105004. [PMID: 34339802 DOI: 10.1016/j.fitote.2021.105004] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Revised: 07/27/2021] [Accepted: 07/27/2021] [Indexed: 12/27/2022]
Abstract
Chemical investigation for the secondary metabolite of marine-derived fungus Aspergillus sp. LS57 resulted in the isolation of one new chromone named aspergilluone A (1) containing a chromone skeleton fused with an unusual hydrogenation cyclopentanoid ring, along with three known compounds 2-4. The structure of 1 was elucidated by 1D and 2D nuclear magnetic resonance (NMR) spectroscopic and mass spectrometric analyses. Its absolute configuration was established by combining NMR quantum chemical calculations and comparison between the experimental and calculated circular dichroism (CD) curves. Additionally, the antibacterial assay of compound 1 was performed. As a result, compound 1 showed in vitro anti-Mycobacterium tuberculosis with MIC value of 32 μg/mL, together with moderate antibacterial activity against Staphylococcus aureus (MIC values = 64 μg/mL), and exhibited feeble activity against gram-positive Bacillus subtilis and gram-negative pathogen Escherichia coli (both MICs = 128 μg/mL).
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Affiliation(s)
- Yang Liu
- Li Dak Sum Yip Yio Chin Kenneth Li Marine Biopharmaceutical Research Center, College of Food and Pharmaceutical Sciences, Ningbo University, Ningbo, China
| | - Lijian Ding
- Li Dak Sum Yip Yio Chin Kenneth Li Marine Biopharmaceutical Research Center, College of Food and Pharmaceutical Sciences, Ningbo University, Ningbo, China.
| | - Jiaxin He
- Li Dak Sum Yip Yio Chin Kenneth Li Marine Biopharmaceutical Research Center, College of Food and Pharmaceutical Sciences, Ningbo University, Ningbo, China
| | - Ziming Zhang
- Li Dak Sum Yip Yio Chin Kenneth Li Marine Biopharmaceutical Research Center, College of Food and Pharmaceutical Sciences, Ningbo University, Ningbo, China
| | - Yueting Deng
- Li Dak Sum Yip Yio Chin Kenneth Li Marine Biopharmaceutical Research Center, College of Food and Pharmaceutical Sciences, Ningbo University, Ningbo, China
| | - Shan He
- Li Dak Sum Yip Yio Chin Kenneth Li Marine Biopharmaceutical Research Center, College of Food and Pharmaceutical Sciences, Ningbo University, Ningbo, China
| | - Xiaojun Yan
- Li Dak Sum Yip Yio Chin Kenneth Li Marine Biopharmaceutical Research Center, College of Food and Pharmaceutical Sciences, Ningbo University, Ningbo, China.
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7
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Sambaiah M, Thota P, Kottawar SS, Yennam S, Shiva Kumar K, Behera M. Synthesis of New Lansiumamide A/Alatamide (cis‐Isomer) Based Unnatural α‐Amino Acid Derivatives via the Suzuki‐Miyaura Cross Coupling as Key Step. ChemistrySelect 2021. [DOI: 10.1002/slct.202101093] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- M. Sambaiah
- Medicinal Chemistry Laboratory (Synthesis) GVK Biosciences Pvt. Ltd 125 & 126, IDA Mallapur Hyderabad Telangana India 500 076
- Department of Chemistry GITAM (DEEMED TO BE UNIVERSITY) GITAM School of Science Hyderabad campus Vill: Rudraram, Mdl: Patancheru, Dist: Sangareddy Telangana India 502329
| | - PradeepKumar Thota
- Medicinal Chemistry Laboratory (Synthesis) GVK Biosciences Pvt. Ltd 125 & 126, IDA Mallapur Hyderabad Telangana India 500 076
| | - Shrinivas S. Kottawar
- Medicinal Chemistry Laboratory (Synthesis) GVK Biosciences Pvt. Ltd 125 & 126, IDA Mallapur Hyderabad Telangana India 500 076
| | - Satyanarayana Yennam
- Medicinal Chemistry Laboratory (Synthesis) GVK Biosciences Pvt. Ltd 125 & 126, IDA Mallapur Hyderabad Telangana India 500 076
| | - K. Shiva Kumar
- Department of Chemistry GITAM (DEEMED TO BE UNIVERSITY) GITAM School of Science Hyderabad campus Vill: Rudraram, Mdl: Patancheru, Dist: Sangareddy Telangana India 502329
| | - Manoranjan Behera
- Medicinal Chemistry Laboratory (Synthesis) GVK Biosciences Pvt. Ltd 125 & 126, IDA Mallapur Hyderabad Telangana India 500 076
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8
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Badran AS, H. Hashiem S, A. Ibrahim M, M. El-Gohary N, A. Allimony H. Synthetic Approaches for Heteroannulated Chromones Fused Various Heterocyclic Systems. HETEROCYCLES 2021. [DOI: 10.3987/rev-20-940] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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9
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10
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Kandula V, Bandaru SK, Balakrishna C, Chatterjee A, Yennam S, Saunders GC, Behera M. Synthesis of 3,4,5‐Trisubstituted Isoxazoles via the ANRORC Rearrangement. European J Org Chem 2020. [DOI: 10.1002/ejoc.202001103] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Venu Kandula
- GVK Biosciences Pvt. Ltd.Survey Nos: 125 (part) & 126 Chemistry Services 500076 Telangana Hyderabad India
- Department of chemistry Koneru Lakshmaiah education foundation 522502 Andra Pradesh Vaddeswaram Guntur India
| | | | - C. Balakrishna
- GVK Biosciences Pvt. Ltd.Survey Nos: 125 (part) & 126 Chemistry Services 500076 Telangana Hyderabad India
| | - Anindita Chatterjee
- Department of chemistry Koneru Lakshmaiah education foundation 522502 Andra Pradesh Vaddeswaram Guntur India
- Department of Chemistry Raghu Engineering college Visakhapatnam Andra Pradesh 530048 India
| | - Satyanarayana Yennam
- GVK Biosciences Pvt. Ltd.Survey Nos: 125 (part) & 126 Chemistry Services 500076 Telangana Hyderabad India
| | | | - Manoranjan Behera
- GVK Biosciences Pvt. Ltd.Survey Nos: 125 (part) & 126 Chemistry Services 500076 Telangana Hyderabad India
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11
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Gudipati R, Kandula V, Raghavulu K, Basavaiah K, Yennam S, Behera M. Peroxy‐Benzoic Acid Mediated Domino C[sp
2
] Hydroxylation /Annulation of Enaminones for the Synthesis of 3‐Hydroxy Chromones. ChemistrySelect 2020. [DOI: 10.1002/slct.202001749] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Ramakrishna Gudipati
- Department of Medicinal ChemistryGVK Biosciences Pvt. Ltd. Plot No. 125 (part)&126, IDA, Mallapur Hyderabad Telangana India 500076
- Department of Inorganic & Analytical ChemistryAndhra University Waltair Junction Visakhapatnam Andhra Pradesh India 530003
| | - Venu Kandula
- Department of Medicinal ChemistryGVK Biosciences Pvt. Ltd. Plot No. 125 (part)&126, IDA, Mallapur Hyderabad Telangana India 500076
| | - K. Raghavulu
- Department of Medicinal ChemistryGVK Biosciences Pvt. Ltd. Plot No. 125 (part)&126, IDA, Mallapur Hyderabad Telangana India 500076
- Department of Inorganic & Analytical ChemistryAndhra University Waltair Junction Visakhapatnam Andhra Pradesh India 530003
| | - K. Basavaiah
- Department of Inorganic & Analytical ChemistryAndhra University Waltair Junction Visakhapatnam Andhra Pradesh India 530003
| | - Satyanarayana Yennam
- Department of Medicinal ChemistryGVK Biosciences Pvt. Ltd. Plot No. 125 (part)&126, IDA, Mallapur Hyderabad Telangana India 500076
| | - Manoranjan Behera
- Department of Medicinal ChemistryGVK Biosciences Pvt. Ltd. Plot No. 125 (part)&126, IDA, Mallapur Hyderabad Telangana India 500076
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12
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Maciel Diogo G, Andrade JS, Sales Junior PA, Maria Fonseca Murta S, Dos Santos VMR, Taylor JG. Trypanocidal Activity of Flavanone Derivatives. Molecules 2020; 25:E397. [PMID: 31963596 PMCID: PMC7024391 DOI: 10.3390/molecules25020397] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2019] [Revised: 12/18/2019] [Accepted: 12/27/2019] [Indexed: 11/16/2022] Open
Abstract
Chagas disease, also known as American trypanosomiasis, is classified as a neglected disease by the World Health Organization. For clinical treatment, only two drugs have been on the market, Benznidazole and Nifurtimox, both of which are recommended for use in the acute phase but present low cure rates in the chronic phase. Furthermore, strong side effects may result in discontinuation of this treatment. Faced with this situation, we report the synthesis and trypanocidal activity of 3-benzoyl-flavanones. Novel 3-benzoyl-flavanone derivatives were prepared in satisfactory yields in the 3-step synthetic procedure. According to recommended guidelines, the whole cell-based screening methodology was utilized that allowed for the simultaneous use of both parasite forms responsible for human infection. The majority of the tested compounds displayed promising anti-Trypanosoma cruzi activity and the most potent flavanone bearing a nitrofuran moiety was more potent than the reference drug, Benznidazole.
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Affiliation(s)
- Gabriela Maciel Diogo
- Chemistry Department, ICEB, Federal University of Ouro Preto, Campus Universitário Morro do Cruzeiro, Ouro Preto 35400-000, MG, Brazil; (G.M.D.); (J.S.A.); (V.M.R.D.S.)
| | - Josimara Souza Andrade
- Chemistry Department, ICEB, Federal University of Ouro Preto, Campus Universitário Morro do Cruzeiro, Ouro Preto 35400-000, MG, Brazil; (G.M.D.); (J.S.A.); (V.M.R.D.S.)
| | | | | | - Viviane Martins Rebello Dos Santos
- Chemistry Department, ICEB, Federal University of Ouro Preto, Campus Universitário Morro do Cruzeiro, Ouro Preto 35400-000, MG, Brazil; (G.M.D.); (J.S.A.); (V.M.R.D.S.)
| | - Jason Guy Taylor
- Chemistry Department, ICEB, Federal University of Ouro Preto, Campus Universitário Morro do Cruzeiro, Ouro Preto 35400-000, MG, Brazil; (G.M.D.); (J.S.A.); (V.M.R.D.S.)
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13
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Pyrrole ring opening – pyridine ring closure: Recyclization of 2-(2-oxo-1,2-dihydro-3H-pyrrol-3-ylidene)malononitriles into highly functionalized nicotinonitriles. Tetrahedron Lett 2020. [DOI: 10.1016/j.tetlet.2019.151368] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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14
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Raghavulu K, Sambaiah M, Gudipati R, Basavaiah K, Yennam S, Behera M. A novel synthesis of 2,5-di-substituted pyridine derivatives by the ring opening and closing cascade (ROCC) mechanism. JOURNAL OF SAUDI CHEMICAL SOCIETY 2019. [DOI: 10.1016/j.jscs.2019.05.008] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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15
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Balakrishna C, Gudipati R, Kandula V, Yennam S, Uma Devi P, Behera M. T3P® mediated domino C(sp2)–H sulfenylation/annulation of enaminones and methylsulfinyls for the synthesis of chromone thioether derivatives. NEW J CHEM 2019. [DOI: 10.1039/c8nj05554h] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Regio-selective preparation of 3-sulfenylated chromone using T3P® has been described for the first time.
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Affiliation(s)
- C. Balakrishna
- Chemistry Services
- GVK Biosciences Pvt Ltd
- Hyderabad-500076
- India
- Department of Chemistry
| | | | - Venu Kandula
- Chemistry Services
- GVK Biosciences Pvt Ltd
- Hyderabad-500076
- India
| | | | - P. Uma Devi
- Department of Chemistry
- GITAM(Deemed to be University)
- Visakhapatnam
- Rushikonda
- India
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