1
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Ito Y, Mizuno K, Sumise S, Kimura A, Noguchi N, Fuchi Y, Hari Y. Generation of 4'-Carbon Radicals via 1,5-Hydrogen Atom Transfer for the Synthesis of Bridged Nucleosides. Org Lett 2022; 24:7696-7700. [PMID: 36214750 DOI: 10.1021/acs.orglett.2c03285] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The rapid and facile generation of 4'-carbon radicals from oxime imidates of nucleosides via 1,5-hydrogen atom transfer induced by iminyl radicals was developed. The cyclization of 4'-carbon radicals with olefins, followed by the hydrolysis of imidate residues, provided various 2'-O,4'-C- and 3'-O,4'-C-bridged nucleosides. This operationally simple approach can be applied to the few-step syntheses of 6'S-methyl-2'-O,4'-C-ethylene-bridged 5-methyluridine (6'S-Me-ENA-T) and S-constrained ethyl-bridged 5-methyluridine (S-cEt-T).
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Affiliation(s)
- Yuta Ito
- Faculty of Pharmaceutical Sciences, Tokushima Bunri University, Nishihama, Yamashiro-cho, Tokushima 770-8514, Japan
| | - Koichi Mizuno
- Faculty of Pharmaceutical Sciences, Tokushima Bunri University, Nishihama, Yamashiro-cho, Tokushima 770-8514, Japan
| | - Sanae Sumise
- Faculty of Pharmaceutical Sciences, Tokushima Bunri University, Nishihama, Yamashiro-cho, Tokushima 770-8514, Japan
| | - Airi Kimura
- Faculty of Pharmaceutical Sciences, Tokushima Bunri University, Nishihama, Yamashiro-cho, Tokushima 770-8514, Japan
| | - Nozomi Noguchi
- Faculty of Pharmaceutical Sciences, Tokushima Bunri University, Nishihama, Yamashiro-cho, Tokushima 770-8514, Japan
| | - Yasufumi Fuchi
- Faculty of Pharmaceutical Sciences, Tokushima Bunri University, Nishihama, Yamashiro-cho, Tokushima 770-8514, Japan
| | - Yoshiyuki Hari
- Faculty of Pharmaceutical Sciences, Tokushima Bunri University, Nishihama, Yamashiro-cho, Tokushima 770-8514, Japan
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2
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Hussain F, Rahman FI, Saha P, Mikami A, Osawa T, Obika S, Rahman SMA. Synthesis of Sugar and Nucleoside Analogs and Evaluation of Their Anticancer and Analgesic Potentials. Molecules 2022; 27:molecules27113499. [PMID: 35684435 PMCID: PMC9182362 DOI: 10.3390/molecules27113499] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2022] [Revised: 05/21/2022] [Accepted: 05/22/2022] [Indexed: 02/04/2023] Open
Abstract
Chemical modification of sugars and nucleosides has a long history of producing compounds with improved selectivity and efficacy. In this study, several modified sugars (2–3) and ribonucleoside analogs (4–8) have been synthesized from α-d-glucose in a total of 21 steps. The compounds were tested for peripheral anti-nociceptive characteristics in the acetic acid-induced writhing assay in mice, where compounds 2, 7, and 8 showed a significant reduction in the number of writhes by 56%, 62%, and 63%, respectively. The compounds were also tested for their cytotoxic potential against human HeLa cell line via trypan blue dye exclusion test followed by cell counting kit-8 (CCK-8) assay. Compound 6 demonstrated significant cytotoxic activity with an IC50 value of 54 µg/mL. Molecular docking simulations revealed that compounds 2, 7, and 8 had a comparable binding affinity to cyclooxygenase-1 (COX-1) and cyclooxygenase-2 (COX-2) enzymes. Additionally, the bridged nucleoside analogs 7 and 8 potently inhibited adenosine kinase enzyme as well, which indicates an alternate mechanistic pathway behind their anti-nociceptive action. Cytotoxic compound 6 demonstrated strong docking with cancer drug targets human cytidine deaminase, proto-oncogene tyrosine-protein kinase Src, human thymidine kinase 1, human thymidylate synthase, and human adenosine deaminase 2. This is the first ever reporting of the synthesis and analgesic property of compound 8 and the cytotoxic potential of compound 6.
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Affiliation(s)
- Fahad Hussain
- Department of Clinical Pharmacy and Pharmacology, Faculty of Pharmacy, University of Dhaka, Dhaka 1000, Bangladesh; (F.H.); (F.I.R.); (P.S.)
| | - Fahad Imtiaz Rahman
- Department of Clinical Pharmacy and Pharmacology, Faculty of Pharmacy, University of Dhaka, Dhaka 1000, Bangladesh; (F.H.); (F.I.R.); (P.S.)
| | - Poushali Saha
- Department of Clinical Pharmacy and Pharmacology, Faculty of Pharmacy, University of Dhaka, Dhaka 1000, Bangladesh; (F.H.); (F.I.R.); (P.S.)
| | - Atsushi Mikami
- Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamadaoka, Osaka 565-0871, Japan; (A.M.); (T.O.); (S.O.)
| | - Takashi Osawa
- Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamadaoka, Osaka 565-0871, Japan; (A.M.); (T.O.); (S.O.)
| | - Satoshi Obika
- Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamadaoka, Osaka 565-0871, Japan; (A.M.); (T.O.); (S.O.)
| | - S. M. Abdur Rahman
- Department of Clinical Pharmacy and Pharmacology, Faculty of Pharmacy, University of Dhaka, Dhaka 1000, Bangladesh; (F.H.); (F.I.R.); (P.S.)
- Correspondence: ; Tel.: +880-1732477343
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3
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Fusi GM, Lim Z, Lindell SD, Gomez‐Bengoa E, Gordon MR, Gazzola S. 2‐ and 6‐Purinylmagnesium Halides in Dichloromethane: Scope and New Insights into the Solvent Influence on the C−Mg Bond. European J Org Chem 2021. [DOI: 10.1002/ejoc.202101009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Giovanni M. Fusi
- Dipartimento di Scienza e Alta Tecnologia Università degli Studi dell'Insubria Via Valleggio 11 22100 Como Italy
| | - Zelong Lim
- Bayer AG Crop Science Division Industriepark Höchst 65926 Frankfurt am Main Germany
| | - Stephen D. Lindell
- Bayer AG Crop Science Division Industriepark Höchst 65926 Frankfurt am Main Germany
| | - Enrique Gomez‐Bengoa
- Department of Organic Chemistry I Faculty of Chemistry University of the Basque Country, UPV-EHU 20012 Donostia-San Sebastián Spain
| | - Malcolm R. Gordon
- Bayer AG Crop Science Division Industriepark Höchst 65926 Frankfurt am Main Germany
| | - Silvia Gazzola
- Dipartimento di Scienza e Alta Tecnologia Università degli Studi dell'Insubria Via Valleggio 11 22100 Como Italy
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4
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Sundar Rajan V, Viader-Godoy X, Lin YL, Dutta U, Ritort F, Westerlund F, Wilhelmsson LM. Mechanical characterization of base analogue modified nucleic acids by force spectroscopy. Phys Chem Chem Phys 2021; 23:14151-14155. [PMID: 34180930 PMCID: PMC8261857 DOI: 10.1039/d1cp01985f] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
We use mechanical unfolding of single DNA hairpins with modified bases to accurately assess intra- and intermolecular forces in nucleic acids. As expected, the modification stabilizes the hybridized hairpin, but we also observe intriguing stacking interactions in the unfolded hairpin. Our study highlights the benefit of using base-modified nucleic acids in force-spectroscopy.
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Affiliation(s)
- Vinoth Sundar Rajan
- Department of Chemistry and Chemical Engineering, Chalmers University of Technology, Sweden. and Department of Biology and Biological Engineering, Chalmers University of Technology, Sweden.
| | - Xavier Viader-Godoy
- Small Biosystems Lab, Condensed Matter Physics Department, Universitat de Barcelona, C/Marti i Franques 1, Barcelona 08028, Spain
| | - Yii-Lih Lin
- Department of Biology and Biological Engineering, Chalmers University of Technology, Sweden.
| | - Uttama Dutta
- Department of Chemistry and Chemical Engineering, Chalmers University of Technology, Sweden. and Department of Biology and Biological Engineering, Chalmers University of Technology, Sweden.
| | - Felix Ritort
- Small Biosystems Lab, Condensed Matter Physics Department, Universitat de Barcelona, C/Marti i Franques 1, Barcelona 08028, Spain
| | - Fredrik Westerlund
- Department of Biology and Biological Engineering, Chalmers University of Technology, Sweden.
| | - L Marcus Wilhelmsson
- Department of Chemistry and Chemical Engineering, Chalmers University of Technology, Sweden.
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5
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Prakash J, Arora NK. Novel metabolites from Bacillus safensis and their antifungal property against Alternaria alternata. Antonie Van Leeuwenhoek 2021; 114:1245-1258. [PMID: 34076810 DOI: 10.1007/s10482-021-01598-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2021] [Accepted: 05/18/2021] [Indexed: 10/21/2022]
Abstract
Plant growth promoting rhizobacteria offer an effective and eco-sustainable solution to protect crops against phytopathogens. In the present study, Bacillus safensis STJP (NAIMCC-B-02323) from the rhizospheric soil of Stevia rebaudiana showed strong biocontrol activity against phytopathogen, Alternaria alternata. B. safensis STJP produced antifungal volatile organic compounds (AVOC). In the presence of AVOC, there was no conidia germination, mycelium growth was inhibited, and hyphae ruptured as observed by scanning electron microscopy. When mycelium of the fungus from bacterial treated plate was transferred into fresh potato dextrose agar plate, A. alternata could not grow. Extracted AVOC from B. safensis STJP were identified by thin-layer chromatography (TLC), Fourier-transform-infrared (FTIR) spectroscopy and gas-chromatography-mass spectrometry (GC-MS). In total 25 bacterial metabolites were identified by GC-MS analysis having alcohol, alkane, phenol, alkyl halide and aromatic compounds. Five of these (phenol, 2,4-bis (1,1-dimethylethyl)-, 3-hexadecanol, pyrrolo(1,2-a)pyrazine-1,4-dione, hexahydro-3-(2-methylpropyl)-, 5,10-diethoxy-2,3,7,8-tetrahydro-1H,6H-dipyrrolo(1,2-a:1',2'-d)pyrazine and hexadecanoic acid) inhibited the mycelium growth, controlling spore formation and conidia germination of A. alternata. This study concluded that AVOC producing B. safensis can be used as a green-fungicide against A. alternata. Bacterial metabolites could pave the way for the development of next generation biopesticides. This can be a reliable technology to enhance the quality and reliability of biopesticides.
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Affiliation(s)
- Jai Prakash
- Department of Environmental Microbiology, School of Earth and Environmental Sciences, Babasaheb Bhimrao Ambedkar University, Lucknow, India
| | - Naveen Kumar Arora
- Department of Environmental Science, School of Earth and Environmental Sciences, Babasaheb Bhimrao Ambedkar University, Vidya Vihar, Raebareli Road, Lucknow, Uttar Pradesh, 226 025, India.
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6
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Guinan M, Benckendorff C, Smith M, Miller GJ. Recent Advances in the Chemical Synthesis and Evaluation of Anticancer Nucleoside Analogues. Molecules 2020; 25:E2050. [PMID: 32354007 PMCID: PMC7248840 DOI: 10.3390/molecules25092050] [Citation(s) in RCA: 54] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2020] [Revised: 04/20/2020] [Accepted: 04/25/2020] [Indexed: 12/12/2022] Open
Abstract
Nucleoside analogues have proven to be highly successful chemotherapeutic agents in the treatment of a wide variety of cancers. Several such compounds, including gemcitabine and cytarabine, are the go-to option in first-line treatments. However, these materials do have limitations and the development of next generation compounds remains a topic of significant interest and necessity. Herein, we discuss recent advances in the chemical synthesis and biological evaluation of nucleoside analogues as potential anticancer agents. Focus is paid to 4'-heteroatom substitution of the furanose oxygen, 2'-, 3'-, 4'- and 5'-position ring modifications and the development of new prodrug strategies for these materials.
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Affiliation(s)
- Mieke Guinan
- Lennard-Jones Laboratory, School of Chemical and Physical Sciences, Keele University, Keele, Staffordshire ST5 5BG, UK; (M.G.); (C.B.)
| | - Caecilie Benckendorff
- Lennard-Jones Laboratory, School of Chemical and Physical Sciences, Keele University, Keele, Staffordshire ST5 5BG, UK; (M.G.); (C.B.)
| | - Mark Smith
- Medicinal Chemistry Knowledge Center, Stanford ChEM-H, 290 Jane Stanford Way, Stanford, CA 94305, USA;
| | - Gavin J. Miller
- Lennard-Jones Laboratory, School of Chemical and Physical Sciences, Keele University, Keele, Staffordshire ST5 5BG, UK; (M.G.); (C.B.)
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7
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Fujisaka A, Hari Y, Takuma H, Rahman SMA, Yoshikawa H, Pang J, Imanishi T, Obika S. Effective syntheses of 2',4'-BNA NC monomers bearing adenine, guanine, thymine, and 5-methylcytosine, and the properties of oligonucleotides fully modified with 2',4'-BNA NC. Bioorg Med Chem 2019; 27:1728-1741. [PMID: 30862430 DOI: 10.1016/j.bmc.2019.02.034] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2018] [Revised: 02/15/2019] [Accepted: 02/16/2019] [Indexed: 12/11/2022]
Abstract
We efficiently synthesized 2'-O,4'-C-aminomethylene-bridged nucleic acid (2',4'-BNANC) monomers bearing the four nucleobases, guanine, adenine, thymine, and 5-methylcytosine and incorporated these monomers into oligonucleotides. Initially, we carried out the transglycosylation reaction on several 2'-O-substituted 5-methyluridines to evaluate the effects of 2'-substitutions on this reaction. Under the optimized conditions, purine nucleobases were successfully introduced, and 2',4'-BNANC monomers bearing adenine or guanine were obtained over several steps. In addition, the improved synthesis of the 2',4'-BNANC monomers bearing thymine or 5-methylcytosine was also achieved. The obtained 2',4'-BNANC monomers were subsequently incorporated into oligonucleotides and the duplex-forming abilities of the modified oligonucleotides were investigated. Duplexes containing 2',4'-BNANC monomers in both or either strands were found to possess excellent thermal stabilities.
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Affiliation(s)
- Aki Fujisaka
- Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamadaoka, Suita, Osaka 565-0871, Japan; Faculty of Pharmacy, Osaka Ohtani University, Nishikiori-Kita 3-11-1, Tondabayashi, Osaka 584-8540, Japan
| | - Yoshiyuki Hari
- Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamadaoka, Suita, Osaka 565-0871, Japan; Faculty of Pharmaceutical Sciences, Tokushima Bunri University, Nishihama, Yamashiro-cho, Tokushima 770-8514, Japan
| | - Hiroko Takuma
- Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - S M Abdur Rahman
- Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamadaoka, Suita, Osaka 565-0871, Japan; Department of Clinical Pharmacy & Pharmacology, Faculty of Pharmacy, University of Dhaka, Dhaka 1000, Bangladesh
| | - Haruhisa Yoshikawa
- Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamadaoka, Suita, Osaka 565-0871, Japan; BNA Inc, 7-7-20 Saito-Asagi, Ibaraki, Osaka 567-0085, Japan
| | - Juanjuan Pang
- Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Takeshi Imanishi
- Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamadaoka, Suita, Osaka 565-0871, Japan; BNA Inc, 7-7-20 Saito-Asagi, Ibaraki, Osaka 567-0085, Japan
| | - Satoshi Obika
- Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamadaoka, Suita, Osaka 565-0871, Japan.
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8
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Srivastava S, Maikhuri VK, Kumar R, Bohra K, Singla H, Maity J, Prasad AK. Synthesis and Photophysical Studies on N1-(2′-O,4′-C-Methyleneribofurano-nucleoside-3′-yl)-C4-(coumarin-7-oxymethyl)-1,2,3-triazoles. Carbohydr Res 2018; 470:19-25. [DOI: 10.1016/j.carres.2018.09.007] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2018] [Revised: 09/27/2018] [Accepted: 09/27/2018] [Indexed: 12/17/2022]
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9
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Martínez-Casares RM, Pérez Méndez HI, Manjarrez Alvarez N, Solís Oba A, Hernández Vázquez L, López-Luna A. Comparison of the diastereoisomeric excess of uridine, inosine and adenosine cyanohydrins determined by HPLC-DAD and 1H NMR. NUCLEOSIDES NUCLEOTIDES & NUCLEIC ACIDS 2017; 36:652-665. [PMID: 29185863 DOI: 10.1080/15257770.2017.1375516] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
The separation of the diastereoisomers of the nucleoside derivatives of uridine, inosine and adenosine was performed by HPLC using chiral and no chiral columns, it was observed with the no chiral columns the resolution was good enough to determine diastereoisomeric excess. These methods were compared with 1H NMR, and no significant differences were observed between the three techniques. Diastereoisomeric uridine (3a), inosine (3b) and adenosine (4c) cyanohydrins were resolved by 1H nuclear magnetic resonance (1H NMR), chiral normal phase-high-performance liquid chromatography-diode array detector (NP-HPLC-DAD) and reversed phase (RP-HPLC-DAD); these methods allowed the assesment of the percent diastereoisomeric excess (% de) of the nucleosidic cyanohydrins of 3a (4, 6 and 4), 3b (10, 8 and 6) and 4c (4, 4 and 4). To the best of our knowledge, there are no reports using analytical techniques for the separation of the epimers of 3a, 3b and 4c.
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Affiliation(s)
- Rubria Marlen Martínez-Casares
- a Doctorado en Ciencias Biológicas y de la Salud , Universidad Autónoma Metropolitana-Unidad Xochimilco , Coyoacán , CDMX , México
| | - Herminia Inés Pérez Méndez
- b Departamento de Sistemas Biológicos , Universidad Autónoma Metropolitana-Unidad Xochimilco , Coyoacán , CDMX , México
| | - Norberto Manjarrez Alvarez
- b Departamento de Sistemas Biológicos , Universidad Autónoma Metropolitana-Unidad Xochimilco , Coyoacán , CDMX , México
| | - Aida Solís Oba
- b Departamento de Sistemas Biológicos , Universidad Autónoma Metropolitana-Unidad Xochimilco , Coyoacán , CDMX , México
| | - Liliana Hernández Vázquez
- b Departamento de Sistemas Biológicos , Universidad Autónoma Metropolitana-Unidad Xochimilco , Coyoacán , CDMX , México
| | - Alberto López-Luna
- b Departamento de Sistemas Biológicos , Universidad Autónoma Metropolitana-Unidad Xochimilco , Coyoacán , CDMX , México
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10
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Kumar R, Kumar M, Maity J, Prasad AK. Chemo-enzymatic synthesis of 3′-O,4′-C-methylene-linked α-l-arabinonucleosides. RSC Adv 2016. [DOI: 10.1039/c6ra17218k] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
Biocatalytic methodology has been developed for the efficient and environment friendly synthesis of 3′-O,4′-C-methylene-linked α-l-arabinonucleosides.
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Affiliation(s)
- Rajesh Kumar
- Bioorganic Laboratory
- Department of Chemistry
- University of Delhi
- Delhi-110007
- India
| | - Manish Kumar
- Bioorganic Laboratory
- Department of Chemistry
- University of Delhi
- Delhi-110007
- India
| | - Jyotirmoy Maity
- Bioorganic Laboratory
- Department of Chemistry
- University of Delhi
- Delhi-110007
- India
| | - Ashok K. Prasad
- Bioorganic Laboratory
- Department of Chemistry
- University of Delhi
- Delhi-110007
- India
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11
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Peitsinis ZV, Melidou DA, Stefanakis JG, Evgenidou H, Koumbis AE. A Versatile Total Synthesis of Trachycladines A and B and Their Analogues. European J Org Chem 2014. [DOI: 10.1002/ejoc.201403091] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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12
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El Sadek MM, Abd El-Dayem NS, Hassan SY, Mostafa MA, Yacout GA. Antioxidant and antitumor activities of new synthesized aromatic C-nucleoside derivatives. Molecules 2014; 19:5163-90. [PMID: 24759075 PMCID: PMC6271343 DOI: 10.3390/molecules19045163] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2014] [Revised: 04/09/2014] [Accepted: 04/14/2014] [Indexed: 11/18/2022] Open
Abstract
The carbohydrazide 1 was used as the precursor for the synthesis of a number of new aromatic C-nucleosides containing 1,3,4-oxadiazole 7, [1,3,4]oxadiazolo[2,3-a]isoindole 10b and pyrazole units 18. On the other hand, the thiosemicarbazone 20 was used as the key intermediate for synthesis of 1,3,4-oxadiazole and 1,2,4-triazole-3-thione derivatives 21 and 23. The antioxidant activities of the prepared compounds were evaluated. The carbohydrazide 1 in particular was found to have potent antioxidant and antitumor activity.
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Affiliation(s)
- Mohamed M El Sadek
- Chemistry Department, Faculty of Science, Alexandria University, Alexandria 21231, Egypt.
| | - Nagwa S Abd El-Dayem
- Chemistry Department, Faculty of Science, Alexandria University, Alexandria 21231, Egypt.
| | - Seham Y Hassan
- Chemistry Department, Faculty of Science, Alexandria University, Alexandria 21231, Egypt.
| | - Mohamed A Mostafa
- Chemistry Department, Faculty of Science, Alexandria University, Alexandria 21231, Egypt.
| | - Galila A Yacout
- Biochemistry Department, Faculty of Science, Alexandria University, Alexandria 21231, Egypt.
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13
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Vodnala SK, Lundbäck T, Yeheskieli E, Sjöberg B, Gustavsson AL, Svensson R, Olivera GC, Eze AA, de Koning HP, Hammarström LGJ, Rottenberg ME. Structure–Activity Relationships of Synthetic Cordycepin Analogues as Experimental Therapeutics for African Trypanosomiasis. J Med Chem 2013; 56:9861-73. [DOI: 10.1021/jm401530a] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
| | | | | | | | | | - Richard Svensson
- Uppsala
University Drug Optimization and Pharmaceutical Profiling Platform
(UDOPP), Department of Pharmacy, Uppsala University, 753 12 Uppsala, Sweden
- Chemical Biology Consortium Sweden, Sweden
| | | | - Anthonius A. Eze
- Institute
of Infection, Immunity and Inflammation, College of Medical, Veterinary
and Life Sciences, University of Glasgow, Glasgow, G12 8QQ, U.K
| | - Harry P. de Koning
- Institute
of Infection, Immunity and Inflammation, College of Medical, Veterinary
and Life Sciences, University of Glasgow, Glasgow, G12 8QQ, U.K
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14
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Synthesis of conformationally-constrained thio(seleno)hydantoins and α-triazolyl lactones from d-arabinose as potential glycosidase inhibitors. Tetrahedron 2012. [DOI: 10.1016/j.tet.2012.03.087] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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15
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Synthesis and biological evaluation of a series of thieno-expanded tricyclic purine 2'-deoxy nucleoside analogues. Bioorg Med Chem 2012; 20:3009-15. [PMID: 22464686 DOI: 10.1016/j.bmc.2012.03.004] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2012] [Revised: 02/23/2012] [Accepted: 03/01/2012] [Indexed: 11/22/2022]
Abstract
Introducing structural diversity into the nucleoside scaffold for use as potential chemotherapeutics has long been considered an important approach to drug design. In that regard, we have designed and synthesized a number of innovative 2'-deoxy expanded nucleosides where a heteroaromatic thiophene spacer ring has been inserted in between the imidazole and pyrimidine ring systems of the natural purine scaffold. The synthetic efforts towards realizing the expanded 2'-deoxy-guanosine and -adenosine tricyclic analogues as well as the preliminary biological results are presented herein.
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