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Inagaki S, Omichi R, Yamazaki K, Shibuta Y, Kawano T. Synthesis of 5-Amino-3(2 H)-furanones via S-Methylation/Intramolecular Cyclization of γ-Sulfanylamides. J Org Chem 2024; 89:6770-6782. [PMID: 38691345 DOI: 10.1021/acs.joc.4c00090] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/03/2024]
Abstract
The S-methylation/intramolecular cyclization of γ-sulfanylamide is depicted. Different methylating reagents were successfully employed for S-methylation, depending on the substituent pattern of the amide in the starting γ-sulfanylamides; trimethyloxonium tetrafluoroborate was used for N-aryl substituted γ-sulfanylamides, and the combination of methyl iodide and silver(I) tetrafluoroborate was used for N-alkyl substituted γ-sulfanylamides. When the resulting sulfonium salt was treated with DBU, it smoothly underwent intramolecular cyclization to produce a series of N-aryl, N-alkyl, N,N-dialkyl or N-alkyl-N-aryl substituted 5-amino-3(2H)-furanones in 55%-quantitative yields.
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Affiliation(s)
- Sho Inagaki
- Department of Medicinal and Organic Chemistry, School of Pharmacy, Iwate Medical University, Yahaba, Iwate 028-3694, Japan
| | - Riko Omichi
- Department of Medicinal and Organic Chemistry, School of Pharmacy, Iwate Medical University, Yahaba, Iwate 028-3694, Japan
| | - Kei Yamazaki
- Department of Medicinal and Organic Chemistry, School of Pharmacy, Iwate Medical University, Yahaba, Iwate 028-3694, Japan
| | - Yuzuka Shibuta
- Department of Medicinal and Organic Chemistry, School of Pharmacy, Iwate Medical University, Yahaba, Iwate 028-3694, Japan
| | - Tomikazu Kawano
- Department of Medicinal and Organic Chemistry, School of Pharmacy, Iwate Medical University, Yahaba, Iwate 028-3694, Japan
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Abdou MM, El-Saeed RA, Abozeid MA, Sadek MG, Zaki E, Barakat Y, Ibrahim H, Fathy M, Shabana S, Amine M, Bondock S. Advancements in tetronic acid chemistry. Part 1: Synthesis and reactions. ARAB J CHEM 2019. [DOI: 10.1016/j.arabjc.2015.11.004] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
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3
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Affiliation(s)
- Keith P. Reber
- Department of Chemistry, Towson University, Towson, MD 21252, USA
| | - Hannah E. Burdge
- Department of Chemistry, Towson University, Towson, MD 21252, USA
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4
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Stereoselective reactions of nitro compounds in the synthesis of natural compound analogs and active pharmaceutical ingredients. Tetrahedron 2016. [DOI: 10.1016/j.tet.2016.07.067] [Citation(s) in RCA: 95] [Impact Index Per Article: 11.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Inagaki S, Ukaku M, Chiba A, Takahashi F, Yoshimi Y, Morita T, Kawano T. Synthesis of Substituted 3(2H)-Furanones Using Alkylative Intramolecular Cyclization of Sulfonium Salts. J Org Chem 2016; 81:8363-9. [DOI: 10.1021/acs.joc.6b01528] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Sho Inagaki
- Department
of Medicinal and Organic Chemistry, School of Pharmacy, Iwate Medical University, Yahaba, Iwate 028-3694, Japan
| | - Mika Ukaku
- Department
of Medicinal and Organic Chemistry, School of Pharmacy, Iwate Medical University, Yahaba, Iwate 028-3694, Japan
| | - Akira Chiba
- Department
of Medicinal and Organic Chemistry, School of Pharmacy, Iwate Medical University, Yahaba, Iwate 028-3694, Japan
| | - Fumi Takahashi
- Department
of Medicinal and Organic Chemistry, School of Pharmacy, Iwate Medical University, Yahaba, Iwate 028-3694, Japan
| | - Yasuharu Yoshimi
- Department
of Applied Chemistry and Biotechnology, Graduate School of Engineering, University of Fukui, 3-9-1 Bunkyo, Fukui 910-8507, Japan
| | - Toshio Morita
- Department
of Applied Chemistry and Biotechnology, Graduate School of Engineering, University of Fukui, 3-9-1 Bunkyo, Fukui 910-8507, Japan
| | - Tomikazu Kawano
- Department
of Medicinal and Organic Chemistry, School of Pharmacy, Iwate Medical University, Yahaba, Iwate 028-3694, Japan
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Govender T, Arvidsson PI, Maguire GEM, Kruger HG, Naicker T. Enantioselective Organocatalyzed Transformations of β-Ketoesters. Chem Rev 2016; 116:9375-437. [PMID: 27463615 DOI: 10.1021/acs.chemrev.6b00156] [Citation(s) in RCA: 94] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The β-ketoester structural motif continues to intrigue chemists with its electrophilic and nucleophilic sites. Proven to be a valuable tool within organic synthesis, natural product, and medicinal chemistry, reports on chiral β-ketoester molecular skeletons display a steady increase. With the reignition of organocatalysis in the past decade, asymmetric methods available for the synthesis of this structural unit has significantly expanded, making it one of the most exploited substrates for organocatalytic transformations. This review provides comprehensive information on the plethora of organocatalysts used in stereoselective organocatalyzed construction of β-ketoester-containing compounds.
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Affiliation(s)
- Thavendran Govender
- Catalysis and Peptide Research Unit, University of KwaZulu Natal , Durban, 4001, South Africa
| | - Per I Arvidsson
- Catalysis and Peptide Research Unit, University of KwaZulu Natal , Durban, 4001, South Africa.,P. I. Arvidsson, Science for Life Laboratory, Drug Discovery and Development Platform and Division of Translational Medicine and Chemical Biology, Department of Medical Biochemistry and Biophysics, Karolinska Institutet SE-171 77 Stockholm, Sweden
| | - Glenn E M Maguire
- Catalysis and Peptide Research Unit, University of KwaZulu Natal , Durban, 4001, South Africa
| | - Hendrik G Kruger
- Catalysis and Peptide Research Unit, University of KwaZulu Natal , Durban, 4001, South Africa
| | - Tricia Naicker
- Catalysis and Peptide Research Unit, University of KwaZulu Natal , Durban, 4001, South Africa
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Schröder P, Bauer JO, Strohmann C, Kumar K, Waldmann H. Synthesis of an Iridoid-Inspired Compound Collection and Discovery of Autophagy Inhibitors. J Org Chem 2016; 81:10242-10255. [DOI: 10.1021/acs.joc.6b01185] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Peter Schröder
- Max Planck Institute of Molecular Physiology, Otto-Hahn-Straße 11, 44227 Dortmund, Germany
| | - Jonathan O. Bauer
- Faculty
of Chemistry and Chemical Biology, Technical University Dortmund, Otto-Hahn-Straßa 6, 44221 Dortmund, Germany
| | - Carsten Strohmann
- Faculty
of Chemistry and Chemical Biology, Technical University Dortmund, Otto-Hahn-Straßa 6, 44221 Dortmund, Germany
| | - Kamal Kumar
- Max Planck Institute of Molecular Physiology, Otto-Hahn-Straße 11, 44227 Dortmund, Germany
| | - Herbert Waldmann
- Max Planck Institute of Molecular Physiology, Otto-Hahn-Straße 11, 44227 Dortmund, Germany
- Faculty
of Chemistry and Chemical Biology, Technical University Dortmund, Otto-Hahn-Straßa 6, 44221 Dortmund, Germany
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Yadav R, Bansal R, Rohilla S, Kachler S, Klotz KN. Synthesis and pharmacological characterization of novel xanthine carboxylate amides as A2A adenosine receptor ligands exhibiting bronchospasmolytic activity. Bioorg Chem 2016; 65:26-37. [PMID: 26851736 DOI: 10.1016/j.bioorg.2016.01.003] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2015] [Revised: 01/15/2016] [Accepted: 01/16/2016] [Indexed: 10/22/2022]
Abstract
The carboxylate amides of 8-phenyl-1,3-dimethylxanthine described herein represent a new series of selective ligands of the adenosine A2A receptors exhibiting bronchospasmolytic activity. The effects of location of 8-phenyl substitutions on the adenosine receptor (AR) binding affinities of the newly synthesized xanthines have also been studied. The compounds displayed moderate to potent binding affinities toward various adenosine receptor subtypes when evaluated through radioligand binding studies. However, most of the compounds showed the maximum affinity for the A2A subtype, some with high selectivity versus all other subtypes. Xanthine carboxylate amide 13b with a diethylaminoethylamino moiety at the para-position of the 8-phenylxanthine scaffold was identified as the most potent A2A adenosine receptor ligand with Ki=0.06μM. Similarly potent and highly A2A-selective are the isovanillin derivatives 16a and 16d. In addition, the newly synthesized xanthine derivatives showed good in vivo bronchospasmolytic activity when tested in guinea pigs.
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Affiliation(s)
- Rakesh Yadav
- University Institute of Pharmaceutical Sciences, Panjab University, Chandigarh 160014, India
| | - Ranju Bansal
- University Institute of Pharmaceutical Sciences, Panjab University, Chandigarh 160014, India.
| | - Suman Rohilla
- University Institute of Pharmaceutical Sciences, Panjab University, Chandigarh 160014, India
| | - Sonja Kachler
- Institut für Pharmakologie und Toxikologie, Universität Würzburg, Germany
| | - Karl-Norbert Klotz
- Institut für Pharmakologie und Toxikologie, Universität Würzburg, Germany
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Yan YY, Lu RJ, Wang JJ, Xuan YN, Yan M. Synthesis of chiral tetronic acid derivatives via organocatalytic conjugate addition of ethyl 4-chloro-3-oxobutanoate to nitroalkenes. Tetrahedron 2012. [DOI: 10.1016/j.tet.2012.05.082] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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10
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Luo NH, Sun X, Yan YY, Nie SZ, Yan M. Asymmetric synthesis of O-alkylated tetronic acid derivatives via an organocatalytic Mannich reaction and subsequent intramolecular cyclization. ACTA ACUST UNITED AC 2011. [DOI: 10.1016/j.tetasy.2011.08.022] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Govindasami T, Pandey A, Palanivelu N, Pandey A. Synthesis, Characterization and Antibacterial Activity of Biologically Important Vanillin Related Hydrazone Derivatives. ACTA ACUST UNITED AC 2011. [DOI: 10.4236/ijoc.2011.13012] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Pashkovskii FS, Shchukina EM, Lakhvich FA. Chemoselective reduction of 3-arylmethylidenetetrahydrofuran-2,4-diones with triethylsilane and sodium cyanotrihydridoborate in acid media. RUSSIAN JOURNAL OF ORGANIC CHEMISTRY 2009. [DOI: 10.1134/s1070428009060098] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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