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Aggarwal R, Jain N, Dubey GP, Singh S, Chandra R. Visible Light-Prompted Regioselective Synthesis of Novel 5-Aroyl/hetaroyl-2',4-dimethyl-2,4'-bithiazoles as DNA- and BSA-Targeting Agents. Biomacromolecules 2023; 24:4798-4818. [PMID: 37729507 DOI: 10.1021/acs.biomac.3c00554] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/22/2023]
Abstract
Organic transformations mediated by visible light have gained popularity in recent years as they are green, renewable, inexpensive, and clean and yield excellent products. The present study describes cyclo-condensation of 2-methylthiazole-4-carbothioamide with differently substituted α-bromo-1,3-diketones achieved by utilizing a white light-emitting diode (LED) (9W) to accomplish the regioselective synthesis of novel 5-aroyl/hetaroyl-2',4-dimethyl-2,4'-bithiazole derivatives as DNA/bovine serum albumin (BSA)-targeting agents. The structure characterization of the exact regioisomer was achieved unequivocally by heteronuclear two-dimensional nuclear magnetic resonance (2D-NMR) spectroscopy [1H-13C] HMBC; [1H-13C] HMQC; and [1H-15N] HMBC. In silico toxicity studies indicated that the synthesized compounds exhibit low toxicity risks and adhere to the rules of oral bioavailability without any exception. Computational molecular modeling of the bithiazole derivatives with the dodecamer sequence of the DNA duplex and BSA identified 5-(4-chlorobenzoyl)-2',4-dimethyl-2,4'-bithiazole 7g as the most suitable derivative that can interact effectively with these biomolecules. Furthermore, theoretical results concurred with the ex vivo binding mode of the 7g with calf thymus DNA (ct-DNA) and BSA through a variety of spectroscopic techniques, viz., ultraviolet-visible (UV-visible), circular dichroism (CD), steady-state fluorescence, and competitive displacement assay, along with viscosity measurements.
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Affiliation(s)
- Ranjana Aggarwal
- Department of Chemistry, Kurukshetra University, Kurukshetra 136119, Haryana, India
- CSIR-National Institute of Science Communication and Policy Research, New Delhi 110012, India
| | - Naman Jain
- Department of Chemistry, Kurukshetra University, Kurukshetra 136119, Haryana, India
| | - Gyan Prakash Dubey
- Department of Chemistry, Kurukshetra University, Kurukshetra 136119, Haryana, India
| | - Snigdha Singh
- Department of Chemistry, University of Delhi, New Delhi 110007, India
| | - Ramesh Chandra
- Department of Chemistry, University of Delhi, New Delhi 110007, India
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Maucort C, Bonnet M, Ortuno JC, Tucker G, Quissac E, Verreault M, Azoulay S, Di Giorgio C, Di Giorgio A, Duca M. Synthesis of Bleomycin-Inspired RNA Ligands Targeting the Biogenesis of Oncogenic miRNAs. J Med Chem 2023; 66:10639-10657. [PMID: 37449818 DOI: 10.1021/acs.jmedchem.3c00797] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/18/2023]
Abstract
Noncoding RNAs (ncRNAs) play pivotal roles in the regulation of gene expression and represent a promising target for the development of new therapeutic approaches. Among these ncRNAs, microRNAs (miRNAs or miRs) are involved in the regulation of gene expression, and their dysregulation has been linked to several diseases such as cancers. Indeed, oncogenic miRNAs are overexpressed in cancer cells, thus promoting tumorigenesis and maintenance of cancer stem cells that are resistant to chemotherapy and often responsible for therapeutic failure. Here, we describe the design and synthesis of new small-molecule RNA binders able to inhibit the biogenesis of oncogenic miRNAs and target efficiently cancer stem cells. Through the biochemical study of their interaction with the target and thanks to intracellular assays, we describe the structure-activity relationships for this new series of RNA ligands, and we identify compounds bearing a very promising antiproliferative activity against cancer stem cells.
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Affiliation(s)
- Chloé Maucort
- CNRS, Institute of Chemistry of Nice (ICN), Université Côte d'Azur, 28 avenue Valrose, 06100 Nice, France
| | - Maurinne Bonnet
- CNRS, Institute of Chemistry of Nice (ICN), Université Côte d'Azur, 28 avenue Valrose, 06100 Nice, France
| | - Jean-Claude Ortuno
- Institut de Recherche Servier, 125 chemin de Ronde, 78290 Croissy-sur-Seine, France
| | - Gordon Tucker
- Institut de Recherche Servier, 125 chemin de Ronde, 78290 Croissy-sur-Seine, France
| | - Emie Quissac
- Institut du Cerveau-Paris Brain Institute-ICM, Inserm, CNRS, APHP, Hôpital de la Pitié Salpêtrière, Sorbonne Université, F-75013 Paris, France
| | - Maïté Verreault
- Institut du Cerveau-Paris Brain Institute-ICM, Inserm, CNRS, APHP, Hôpital de la Pitié Salpêtrière, Sorbonne Université, F-75013 Paris, France
| | - Stéphane Azoulay
- CNRS, Institute of Chemistry of Nice (ICN), Université Côte d'Azur, 28 avenue Valrose, 06100 Nice, France
| | - Christophe Di Giorgio
- CNRS, Institute of Chemistry of Nice (ICN), Université Côte d'Azur, 28 avenue Valrose, 06100 Nice, France
| | - Audrey Di Giorgio
- CNRS, Institute of Chemistry of Nice (ICN), Université Côte d'Azur, 28 avenue Valrose, 06100 Nice, France
| | - Maria Duca
- CNRS, Institute of Chemistry of Nice (ICN), Université Côte d'Azur, 28 avenue Valrose, 06100 Nice, France
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Yañuk JG, Denofrio MP, Rasse-Suriani FAO, Villarruel FD, Fassetta F, García Einschlag FS, Erra-Balsells R, Epe B, Cabrerizo FM. DNA damage photo-induced by chloroharmine isomers: hydrolysis versus oxidation of nucleobases. Org Biomol Chem 2018. [PMID: 29528081 DOI: 10.1039/c8ob00162f] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Photodynamic therapy (PDT) is an emerging clinical treatment currently being used against a wide range of both cancerous and noncancerous diseases. The search for new active photosensitizers as well as the development of novel selective delivery systems are the major challenges faced in the application of PDT. We investigated herein three chloroharmine derivatives (6-, 8- and 6,8-dichloroharmines) with quite promising intrinsic photochemical tunable properties and their ability to photoinduce DNA damage in order to elucidate the underlying photochemical mechanisms. Data revealed that the three compounds are quite efficient photosensitizers. The overall extent of photo-oxidative DNA damage induced by both 8-chloro-substituted β-carbolines is higher than that induced by 6-chloro-harmine. The predominant type of lesion generated also depends on the position of the chlorine atom in the β-carboline ring. Both 8-chloro-substituted β-carbolines mostly oxidize purines via type I mechanism, whereas 6-chloro-harmine mainly behaves as a "clean" artificial photonuclease inducing single-strand breaks and site of base loss via proton transfer and concerted (HO--mediated) hydrolytic attack. The latter finding represents an exception to the general photosensitizing reactions and, to the best of our knowledge, this is the first time that this process is well documented. The controlled and selective production of different oxygen-independent lesions could be fine-tuned by simply changing the substituent groups in the β-carboline ring. This could be a promising tool for the design and development of novel photo-therapeutic agents aimed to tackle hypoxic conditions shown in certain types of tumours.
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Affiliation(s)
- Juan G Yañuk
- Instituto Tecnológico de Chascomús (INTECH), Universidad Nacional de San Martín (UNSAM) - Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Intendente Marino Km 8.2, CC 164 (B7130IWA), Chascomús, Argentina.
| | - M Paula Denofrio
- Instituto Tecnológico de Chascomús (INTECH), Universidad Nacional de San Martín (UNSAM) - Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Intendente Marino Km 8.2, CC 164 (B7130IWA), Chascomús, Argentina.
| | - Federico A O Rasse-Suriani
- Instituto Tecnológico de Chascomús (INTECH), Universidad Nacional de San Martín (UNSAM) - Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Intendente Marino Km 8.2, CC 164 (B7130IWA), Chascomús, Argentina. and INIFTA - CONICET, Universidad Nacional de La Plata, Diag. 113 y 64, 1900 La Plata, Argentina
| | - Fernando D Villarruel
- Instituto Tecnológico de Chascomús (INTECH), Universidad Nacional de San Martín (UNSAM) - Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Intendente Marino Km 8.2, CC 164 (B7130IWA), Chascomús, Argentina. and INIFTA - CONICET, Universidad Nacional de La Plata, Diag. 113 y 64, 1900 La Plata, Argentina
| | - Federico Fassetta
- Instituto Tecnológico de Chascomús (INTECH), Universidad Nacional de San Martín (UNSAM) - Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Intendente Marino Km 8.2, CC 164 (B7130IWA), Chascomús, Argentina.
| | | | - Rosa Erra-Balsells
- CIHIDECAR - CONICET, Departamento de Química Orgánica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Pabellón 2, 3p, Ciudad Universitaria, 1428 Buenos Aires, Argentina
| | - Bernd Epe
- Institute of Pharmacy and Biochemistry, University of Mainz, Staudingerweg 5, Mainz, Germany
| | - Franco M Cabrerizo
- Instituto Tecnológico de Chascomús (INTECH), Universidad Nacional de San Martín (UNSAM) - Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Intendente Marino Km 8.2, CC 164 (B7130IWA), Chascomús, Argentina.
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Turan-Zitouni G, Altıntop MD, Özdemir A, Kaplancıklı ZA, Çiftçi GA, Temel HE. Synthesis and evaluation of bis-thiazole derivatives as new anticancer agents. Eur J Med Chem 2015; 107:288-94. [PMID: 26599534 DOI: 10.1016/j.ejmech.2015.11.002] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2015] [Revised: 10/23/2015] [Accepted: 11/02/2015] [Indexed: 12/13/2022]
Abstract
New bis-thiazole derivatives (1-10) were synthesized via the ring closure of 1,1'-(3,3'-dimethoxybiphenyl-4,4'-diyl)bis(thiourea) with phenacyl bromides and evaluated for their cytotoxic effects on A549 human lung adenocarcinoma, C6 rat glioma, 5RP7 H-ras oncogene transformed rat embryonic fibroblast and NIH/3T3 mouse embryonic fibroblast cell lines using MTT assay. DNA synthesis inhibitory effects of these compounds were investigated. Each derivative was also evaluated for its ability to inhibit AChE and BuChE using a modification of Ellman's spectrophotometric method. Among these compounds, 3,3'-dimethoxy-N(4),N(4)'-bis(4-(4-bromophenyl)thiazol-2-yl)-[1,1'-biphenyl]-4,4'-diamine (5) can be identified as the most promising anticancer agent due to its notable inhibitory effects on A549 and C6 cell lines and low toxicity to NIH/3T3 cell lines. Compound 5 exhibited anticancer activity against A549 and C6 cell lines with IC50 values of 37.3 ± 6.8 μg/mL and 11.3 ± 1.2 μg/mL, whereas mitoxantrone showed anticancer activity against A549 and C6 cell lines with IC50 values of 15.7 ± 4.0 μg/mL and 11.0 ± 1.7 μg/mL, respectively. Furthermore, compound 5 showed DNA synthesis inhibitory activity against A549 cell line.
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Affiliation(s)
- Gülhan Turan-Zitouni
- Anadolu University, Faculty of Pharmacy, Department of Pharmaceutical Chemistry, 26470 Eskişehir, Turkey
| | - Mehlika Dilek Altıntop
- Anadolu University, Faculty of Pharmacy, Department of Pharmaceutical Chemistry, 26470 Eskişehir, Turkey.
| | - Ahmet Özdemir
- Anadolu University, Faculty of Pharmacy, Department of Pharmaceutical Chemistry, 26470 Eskişehir, Turkey
| | - Zafer Asım Kaplancıklı
- Anadolu University, Faculty of Pharmacy, Department of Pharmaceutical Chemistry, 26470 Eskişehir, Turkey
| | - Gülşen Akalın Çiftçi
- Anadolu University, Faculty of Pharmacy, Department of Biochemistry, 26470 Eskişehir, Turkey
| | - Halide Edip Temel
- Anadolu University, Faculty of Pharmacy, Department of Biochemistry, 26470 Eskişehir, Turkey
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5
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A novel series of thiazolyl–pyrazoline derivatives: Synthesis and evaluation of antifungal activity, cytotoxicity and genotoxicity. Eur J Med Chem 2015; 92:342-52. [DOI: 10.1016/j.ejmech.2014.12.055] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2014] [Revised: 11/06/2014] [Accepted: 12/30/2014] [Indexed: 12/24/2022]
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Altıntop MD, Özdemir A, Turan-Zitouni G, Ilgın S, Atlı Ö, Demirci F, Kaplancıklı ZA. Synthesis and in vitro evaluation of new nitro-substituted thiazolyl hydrazone derivatives as anticandidal and anticancer agents. Molecules 2014; 19:14809-20. [PMID: 25232704 PMCID: PMC6271239 DOI: 10.3390/molecules190914809] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2014] [Revised: 08/25/2014] [Accepted: 09/02/2014] [Indexed: 02/02/2023] Open
Abstract
Fourteen new thiazolyl hydrazone derivatives were synthesized and evaluated for their anticandidal activity using a broth microdilution assay. Among the synthesized compounds, 2-[2-((5-(4-chloro-2-nitrophenyl)furan-2-yl)methylene)hydrazinyl]-4-(4-fluorophenyl)thiazole and 2-[2-((5-(4-chloro-2-nitrophenyl)furan-2-yl)methylene) hydrazinyl]-4-(4-methoxyphenyl)thiazole were found to be the most effective antifungal compounds against Candida utilis, with a MIC value of 250 µg/mL, when compared with fluconazole (MIC=2 µg/mL). Additionally, the synthesized compounds were evaluated for their in vitro cytotoxic effects on the MCF-7 and NIH/3T3 cell lines. As a result, 2-[2-((5-(4-chloro-2-nitrophenyl)furan-2-yl)methylene)hydrazinyl]-4-(4-chlorophenyl)thiazole was identified as the most promising anticancer compound against MCF-7 cancer cells due to its inhibitory effects (IC50=125 µg/mL) and relatively low toxicity towards the NIH/3T3 cell line (IC50>500 µg/mL).
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Affiliation(s)
- Mehlika Dilek Altıntop
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Anadolu University, 26470 Eskişehir, Turkey; E-Mails: (M.D.A.); (A.Ö.); (G.T.-Z.); (Z.A.K.)
- Graduate School of Health Sciences, Anadolu University, 26470 Eskişehir, Turkey
| | - Ahmet Özdemir
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Anadolu University, 26470 Eskişehir, Turkey; E-Mails: (M.D.A.); (A.Ö.); (G.T.-Z.); (Z.A.K.)
| | - Gülhan Turan-Zitouni
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Anadolu University, 26470 Eskişehir, Turkey; E-Mails: (M.D.A.); (A.Ö.); (G.T.-Z.); (Z.A.K.)
| | - Sinem Ilgın
- Department of Pharmaceutical Toxicology, Faculty of Pharmacy, Anadolu University, 26470 Eskişehir, Turkey; E-Mails: (S.I.); (Ö.A.)
| | - Özlem Atlı
- Department of Pharmaceutical Toxicology, Faculty of Pharmacy, Anadolu University, 26470 Eskişehir, Turkey; E-Mails: (S.I.); (Ö.A.)
| | - Fatih Demirci
- Graduate School of Health Sciences, Anadolu University, 26470 Eskişehir, Turkey
- Department of Pharmacognosy, Faculty of Pharmacy, Anadolu University, 26470 Eskişehir, Turkey
| | - Zafer Asım Kaplancıklı
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Anadolu University, 26470 Eskişehir, Turkey; E-Mails: (M.D.A.); (A.Ö.); (G.T.-Z.); (Z.A.K.)
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Banerjee S, Veale EB, Phelan CM, Murphy SA, Tocci GM, Gillespie LJ, Frimannsson DO, Kelly JM, Gunnlaugsson T. Recent advances in the development of 1,8-naphthalimide based DNA targeting binders, anticancer and fluorescent cellular imaging agents. Chem Soc Rev 2013; 42:1601-18. [DOI: 10.1039/c2cs35467e] [Citation(s) in RCA: 492] [Impact Index Per Article: 44.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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8
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Wang WL, Chen HJ, Ma WP, Gu M, Fan MZ, Li JY, Feng B, Nan FJ. Synthesis and Antiviral Activity of Conformational Analogues of Leucamide A. Molecules 2012; 17:14522-30. [PMID: 23222900 PMCID: PMC6268252 DOI: 10.3390/molecules171214522] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2012] [Revised: 11/28/2012] [Accepted: 11/30/2012] [Indexed: 11/27/2022] Open
Abstract
In order to study the effect of heterocyclic core conformational state of leucamide A on its anti-influenza virus A activity, five conformational analogues were prepared by replacing the Pro-Leu dipeptide in the molecule with various amino acids. The amino acids used were of 2 to 6 carbons. The results showed that these replacements not only changed the conformational relationship between the 4,2-bisheterocycle tandem pair and the third heterocycle, but also had dramatic effect on its activity against influenza virus A.
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Affiliation(s)
- Wen-Long Wang
- School of Pharmaceutical Science, Jiangnan University, Wuxi 214122, China; E-Mail:
- Chinese National Center for Drug Screening, Shanghai Institute of Materia Medica, Shanghai Institutes of Biological Sciences, Graduate School of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai 201203, China; E-Mails: (H.-J.C.); (W.-P.M.); (M.G.); (M.-Z.F.); (J.-Y.L.)
| | - Hai-Jun Chen
- Chinese National Center for Drug Screening, Shanghai Institute of Materia Medica, Shanghai Institutes of Biological Sciences, Graduate School of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai 201203, China; E-Mails: (H.-J.C.); (W.-P.M.); (M.G.); (M.-Z.F.); (J.-Y.L.)
| | - Wei-Ping Ma
- Chinese National Center for Drug Screening, Shanghai Institute of Materia Medica, Shanghai Institutes of Biological Sciences, Graduate School of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai 201203, China; E-Mails: (H.-J.C.); (W.-P.M.); (M.G.); (M.-Z.F.); (J.-Y.L.)
| | - Min Gu
- Chinese National Center for Drug Screening, Shanghai Institute of Materia Medica, Shanghai Institutes of Biological Sciences, Graduate School of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai 201203, China; E-Mails: (H.-J.C.); (W.-P.M.); (M.G.); (M.-Z.F.); (J.-Y.L.)
| | - Min-Zhi Fan
- Chinese National Center for Drug Screening, Shanghai Institute of Materia Medica, Shanghai Institutes of Biological Sciences, Graduate School of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai 201203, China; E-Mails: (H.-J.C.); (W.-P.M.); (M.G.); (M.-Z.F.); (J.-Y.L.)
| | - Jing-Ya Li
- Chinese National Center for Drug Screening, Shanghai Institute of Materia Medica, Shanghai Institutes of Biological Sciences, Graduate School of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai 201203, China; E-Mails: (H.-J.C.); (W.-P.M.); (M.G.); (M.-Z.F.); (J.-Y.L.)
| | - Bainian Feng
- School of Pharmaceutical Science, Jiangnan University, Wuxi 214122, China; E-Mail:
- Authors to whom correspondence should be addressed; E-Mails: (B.F.); (F.-J.N.); Tel./Fax: +86-21-5080-0954 (F.-J.N.)
| | - Fa-Jun Nan
- Chinese National Center for Drug Screening, Shanghai Institute of Materia Medica, Shanghai Institutes of Biological Sciences, Graduate School of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai 201203, China; E-Mails: (H.-J.C.); (W.-P.M.); (M.G.); (M.-Z.F.); (J.-Y.L.)
- Authors to whom correspondence should be addressed; E-Mails: (B.F.); (F.-J.N.); Tel./Fax: +86-21-5080-0954 (F.-J.N.)
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10
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Chen HJ, Wang WL, Wang GF, Shi LP, Gu M, Ren YD, Hou LF, He PL, Zhu FH, Zhong XG, Tang W, Zuo JP, Nan FJ. Rational Design and Synthesis of 2,2-Bisheterocycle Tandem Derivatives as Non-Nucleoside Hepatitis B Virus Inhibitors. ChemMedChem 2008; 3:1316-21. [DOI: 10.1002/cmdc.200800136] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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11
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Ma Q, Xu Z, Schroeder BR, Sun W, Wei F, Hashimoto S, Konishi K, Leitheiser CJ, Hecht SM. Biochemical evaluation of a 108-member deglycobleomycin library: viability of a selection strategy for identifying bleomycin analogues with altered properties. J Am Chem Soc 2007; 129:12439-52. [PMID: 17887752 DOI: 10.1021/ja0722729] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The bleomycins (BLMs) are clinically used glycopeptide antitumor antibiotics that have been shown to mediate the sequence-selective oxidative damage of both DNA and RNA. Previously, we described the solid-phase synthesis of a library of 108 unique analogues of deglycoBLM A6, a congener that cleaves DNA analogously to BLM itself. Each member of the library was assayed for its ability to effect single- and double-strand nicking of duplex DNA, sequence-selective DNA cleavage, and RNA cleavage in the presence and absence of a metal ion cofactor. All of the analogues tested were found to mediate concentration-dependent plasmid DNA relaxation to some extent, and a number exhibited double-strand cleavage with an efficiency comparable to or greater than deglycoBLM A6. Further, some analogues having altered linker and metal-binding domains mediated altered sequence-selective cleavage, and a few were found to cleave a tRNA3Lys transcript both in the presence and in the absence of a metal cofactor. The results provide insights into structural elements within BLM that control DNA and RNA cleavage. The present study also permits inferences to be drawn regarding the practicality of a selection strategy for the solid-phase construction and evaluation of large libraries of BLM analogues having altered properties.
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Affiliation(s)
- Qian Ma
- Departments of Chemistry and Biology, University of Virginia, Charlottesville, Virginia 22904, USA
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12
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Liu Y, Wu F, Zou G. Electrophoresis mobility shift assay and biosensor used in studying the interaction between bleomycin A5 and DNA. Anal Chim Acta 2007; 599:310-4. [PMID: 17870295 DOI: 10.1016/j.aca.2007.07.064] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2007] [Revised: 07/20/2007] [Accepted: 07/27/2007] [Indexed: 11/26/2022]
Abstract
DNA is the potential target of numerous drugs utilized widely in clinical cancer therapy. Here we employed bleomycin A5, with its deactivated form as contrast, to investigate the interaction between small pharmaceutical and DNA. Electrophoresis mobility shift assay (EMSA) which is a common technique used in studying specific interactions between DNA and proteins is applied in visualizing the binding of bleomycin A5 with DNA intuitively. More accurate association equilibrium constant for native and deactivated bleomycin A5 to DNA achieved on biosensor IAsys AUTO+ is 1.25x10(4) and 1.3x10(3) M(-1), respectively. With combination of EMSA and biosensor, a qualitative and quantitative method is described, which can be extended to studying the binding of most small molecules with targeting DNA and serves as a powerful tool in designing and screening for novel drugs.
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Affiliation(s)
- Yanbin Liu
- State Key Laboratory of Virology, College of Life Sciences, Wuhan University, Wuhan 430072, China
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13
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Rakić B, Brûlotte M, Rouleau Y, Bélanger S, Pezacki JP. Bleomycin is a potent small-molecule inhibitor of hepatitis C virus replication. Chembiochem 2006; 7:1330-3. [PMID: 16888741 DOI: 10.1002/cbic.200600180] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Bojana Rakić
- The Steacie Institute for Molecular Sciences, National Research Council of Canada, 100 Sussex Drive, Ottawa, K1A 0R6, Canada
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Wang WL, Yao DY, Gu M, Fan MZ, Li JY, Xing YC, Nan FJ. Synthesis and biological evaluation of novel bisheterocycle-containing compounds as potential anti-influenza virus agents. Bioorg Med Chem Lett 2005; 15:5284-7. [PMID: 16183283 DOI: 10.1016/j.bmcl.2005.08.046] [Citation(s) in RCA: 79] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2005] [Revised: 08/08/2005] [Accepted: 08/12/2005] [Indexed: 11/19/2022]
Abstract
A series of novel 4,2-bisheterocycle tandem derivatives consisting of a methyloxazole and thiazole subunit were synthesized. Many compounds were found to inhibit human influenza A virus. Several analogues exhibited moderate biological activity and could serve as leads for further optimizations for antivirus research.
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Affiliation(s)
- Wen-Long Wang
- Chinese National Center for Drug Screening, Shanghai Institute of Materia Medica, Shanghai Institutes of Biological Sciences, Graduate School of Chinese Academy of Sciences, Chinese Academy of Sciences, 189 Guo Shou Jing Road, Shanghai 201203, China
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15
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Li Z, Yang Q, Qian X. Novel thiazonaphthalimides as efficient antitumor and DNA photocleaving agents: Effects of intercalation, side chains, and substituent groups. Bioorg Med Chem 2005; 13:4864-70. [PMID: 15925513 DOI: 10.1016/j.bmc.2005.05.006] [Citation(s) in RCA: 52] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2005] [Revised: 05/03/2005] [Accepted: 05/03/2005] [Indexed: 11/24/2022]
Abstract
A series of novel antitumor and DNA photocleaving agents was designed and synthesized by fusing a (substituted) thiazole ring to the naphthalimide skeletons. C1, the most active compound against A549, was about 30-fold more cytotoxic than the compound amonafide. A1, the most active compound against P388, was about 6-fold more cytotoxic than amonafide. C2, the most efficient DNA intercalator, showed the strongest DNA photocleaving activity via superoxide anion produced under UV light at 360 nm.
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Affiliation(s)
- Zhigang Li
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116012, China
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Li Z, Yang Q, Qian X. Synthesis, antitumor evaluation and DNA photocleaving activity of novel methylthiazonaphthalimides with aminoalkyl side chains. Bioorg Med Chem Lett 2005; 15:3143-6. [PMID: 15876532 DOI: 10.1016/j.bmcl.2005.04.012] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2005] [Revised: 04/05/2005] [Accepted: 04/08/2005] [Indexed: 11/24/2022]
Abstract
A series of methylthiazonaphthalimides was synthesized and quantitatively evaluated as efficient DNA intercalators, antitumor agents and DNA photocleavers. A(1) showed both efficient antitumor activities against cell lines of A549 and P388 with IC50 of 82.8 and 31 nM, respectively. A(3) was the strongest antitumor agent against A549 with the IC50 of 20.8 nM. A(2), the most efficient DNA intercalator, was found to be the strongest DNA photocleaver via superoxide anion. An explanation was given for the disaccord between antitumor and DNA photocleaving activities.
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Affiliation(s)
- Zhigang Li
- State Key Lab. of Fine Chemicals, Dalian University of Technology, PO Box 158, Zhongshan Road, Dalian 116012, China
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17
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Naphthalimide–thiazoles as novel photonucleases: molecular design, synthesis, and evaluation. Tetrahedron Lett 2004. [DOI: 10.1016/j.tetlet.2003.11.145] [Citation(s) in RCA: 55] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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18
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Cagir A, Tao ZF, Sucheck SJ, Hecht SM. Solid-phase synthesis and biochemical evaluation of conformationally constrained analogues of deglycobleomycin A5. Bioorg Med Chem 2003; 11:5179-87. [PMID: 14604681 DOI: 10.1016/j.bmc.2003.08.033] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Deglycobleomycin binds to and degrades the self-complementary oligonucleotide d(CGCTAGCG)(2) in a sequence selective fashion. A previous modeling study [J. Am. Chem. Soc. 120, (1998), 7450] had shown that, during binding to double stranded DNA, the conformation of the methylvalerate domain of deglycoBLM approximated that of S-proline. In the belief that an analogue of deglycoBLM structurally constrained to mimic the DNA-bound conformation might exhibit facilitated DNA binding and cleavage, an analogue of deglycoBLM was prepared in which the methylvalerate moiety was replaced by S-proline. This deglycoBLM analogue, as well as the related analogue containing R-proline, was synthesized on a TentaGel resin. Both of the analogues were found to be capable of binding Fe(2+) and activating O(2) for transfer to styrene. However, both deglycoBLM analogues exhibited diminished abilities to effect the relaxation of supercoiled plasmid DNA, and neither mediated sequence selective DNA cleavage.
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Affiliation(s)
- Ali Cagir
- Departments of Chemistry and Biology, University of Virginia, Charlottesville, VA 22901, USA
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Rishel MJ, Thomas CJ, Tao ZF, Vialas C, Leitheiser CJ, Hecht SM. Conformationally constrained analogues of bleomycin A5. J Am Chem Soc 2003; 125:10194-205. [PMID: 12926941 DOI: 10.1021/ja030057w] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The bleomycin (BLM) group antitumor antibiotics are glycopeptide-derived natural products shown to cause sequence selective lesions in DNA. Prior studies have indicated that the linker region, composed of the methylvalerate and threonine residues, may be responsible for a conformational bend in the agent required for efficient DNA cleavage. We have synthesized a number of conformationally constrained methylvalerate analogues and incorporated them into deglycobleomycin A(5) congeners using our recently reported procedure for the solid phase construction of (deglyco)bleomycin and its analogues. These analogues were designed to probe the effects of conformational constraint of the native valerate moiety. Initial experiments indicated that the constrained molecules, none of which mimic the conformation proposed for the natural valerate linker, possessed DNA cleavage activity, albeit with potencies less than that of (deglyco)BLM and lacking sequence selectivity. Further experiments demonstrated that these analogues failed to produce alkali-labile lesions in DNA or sequence selective oxidative damage in RNA. However, two of the conformationally constrained deglycoBLM analogues were shown to mediate RNA cleavage in the absence of added Fe(2+). The ability of the analogues to mediate the oxygenation of small molecules was also assayed, and it was shown that they were as competent in the transfer of oxygen to low molecular weight substrates as the parent compound.
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Affiliation(s)
- Michael J Rishel
- Department of Chemistry, University of Virginia, Charlottesville, Virginia 22904, USA
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20
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Mahon KP, Ortiz-Meoz RF, Prestwich EG, Kelley SO. Photosensitized DNA cleavage promoted by amino acids. Chem Commun (Camb) 2003:1956-7. [PMID: 12932051 DOI: 10.1039/b306008j] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
A novel class of DNA cleavage agents are reported that derive activity from amino acids tethered to a photoactive intercalator.
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Affiliation(s)
- Kerry P Mahon
- Boston College, Eugene F. Merkert Chemistry Center, Chestnut Hill, MA 02467, USA
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21
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Leitheiser CJ, Smith KL, Rishel MJ, Hashimoto S, Konishi K, Thomas CJ, Li C, McCormick MM, Hecht SM. Solid-phase synthesis of bleomycin group antibiotics. Construction of a 108-member deglycobleomycin library. J Am Chem Soc 2003; 125:8218-27. [PMID: 12837092 DOI: 10.1021/ja021388w] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The bleomycins (BLMs) are structurally related glycopeptide antibiotics isolated from Streptomyces verticillus that mediate the sequence-selective oxidative damage of DNA and RNA. Deglycobleomycin, which lacks the carbohydrate moiety, cleaves DNA analogously to bleomycin itself, albeit less potently, and has been used successfully for analyzing the functional domains of bleomycin. Although structural modifications to bleomycin and deglycobleomycin have been reported, no bleomycin or deglycobleomycin analogue having enhanced DNA cleavage activity has yet been described. The successful synthesis of a deglycobleomycin on a solid support has permitted the facile solid-phase synthesis of 108 unique deglycobleomycin analogues through parallel solid-phase synthesis. Each of the deglycobleomycin analogues was synthesized efficiently; the purity of each crude product was greater than 60%, as determined by HPLC integration. The solid-phase synthesis of the deglycobleomycin library provided near-milligram to milligram quantities of each deglycobleomycin, thereby permitting characterization by (1)H NMR and high-resolution mass spectrometry. Each analogue demonstrated supercoiled plasmid DNA relaxation above background cleavage; the library included two analogues that mediated plasmid relaxation to a greater extent than the parent deglycobleomycin molecule.
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22
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Brezova V, Valko M, Breza M, Morris H, Telser J, Dvoranova D, Kaiserova K, Varecka L, Mazur M, Leibfritz D. Role of Radicals and Singlet Oxygen in Photoactivated DNA Cleavage by the Anticancer Drug Camptothecin: An Electron Paramagnetic Resonance Study. J Phys Chem B 2003. [DOI: 10.1021/jp027743m] [Citation(s) in RCA: 53] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- V. Brezova
- School of Pharmacy and Chemistry, Liverpool John Moores University, Liverpool L3 3AF, United Kingdom, Faculty of Chemical and Food Technology, Slovak Technical University, SK-812 37 Bratislava, Slovakia, Department of Organic Chemistry 2/NW2, Bremen University, D-283 59 Bremen, Germany, and Chemistry Program, Roosevelt University, 430 South Michigan Avenue, Chicago, Illinois 60605
| | - M. Valko
- School of Pharmacy and Chemistry, Liverpool John Moores University, Liverpool L3 3AF, United Kingdom, Faculty of Chemical and Food Technology, Slovak Technical University, SK-812 37 Bratislava, Slovakia, Department of Organic Chemistry 2/NW2, Bremen University, D-283 59 Bremen, Germany, and Chemistry Program, Roosevelt University, 430 South Michigan Avenue, Chicago, Illinois 60605
| | - M. Breza
- School of Pharmacy and Chemistry, Liverpool John Moores University, Liverpool L3 3AF, United Kingdom, Faculty of Chemical and Food Technology, Slovak Technical University, SK-812 37 Bratislava, Slovakia, Department of Organic Chemistry 2/NW2, Bremen University, D-283 59 Bremen, Germany, and Chemistry Program, Roosevelt University, 430 South Michigan Avenue, Chicago, Illinois 60605
| | - H. Morris
- School of Pharmacy and Chemistry, Liverpool John Moores University, Liverpool L3 3AF, United Kingdom, Faculty of Chemical and Food Technology, Slovak Technical University, SK-812 37 Bratislava, Slovakia, Department of Organic Chemistry 2/NW2, Bremen University, D-283 59 Bremen, Germany, and Chemistry Program, Roosevelt University, 430 South Michigan Avenue, Chicago, Illinois 60605
| | - J. Telser
- School of Pharmacy and Chemistry, Liverpool John Moores University, Liverpool L3 3AF, United Kingdom, Faculty of Chemical and Food Technology, Slovak Technical University, SK-812 37 Bratislava, Slovakia, Department of Organic Chemistry 2/NW2, Bremen University, D-283 59 Bremen, Germany, and Chemistry Program, Roosevelt University, 430 South Michigan Avenue, Chicago, Illinois 60605
| | - D. Dvoranova
- School of Pharmacy and Chemistry, Liverpool John Moores University, Liverpool L3 3AF, United Kingdom, Faculty of Chemical and Food Technology, Slovak Technical University, SK-812 37 Bratislava, Slovakia, Department of Organic Chemistry 2/NW2, Bremen University, D-283 59 Bremen, Germany, and Chemistry Program, Roosevelt University, 430 South Michigan Avenue, Chicago, Illinois 60605
| | - K. Kaiserova
- School of Pharmacy and Chemistry, Liverpool John Moores University, Liverpool L3 3AF, United Kingdom, Faculty of Chemical and Food Technology, Slovak Technical University, SK-812 37 Bratislava, Slovakia, Department of Organic Chemistry 2/NW2, Bremen University, D-283 59 Bremen, Germany, and Chemistry Program, Roosevelt University, 430 South Michigan Avenue, Chicago, Illinois 60605
| | - L. Varecka
- School of Pharmacy and Chemistry, Liverpool John Moores University, Liverpool L3 3AF, United Kingdom, Faculty of Chemical and Food Technology, Slovak Technical University, SK-812 37 Bratislava, Slovakia, Department of Organic Chemistry 2/NW2, Bremen University, D-283 59 Bremen, Germany, and Chemistry Program, Roosevelt University, 430 South Michigan Avenue, Chicago, Illinois 60605
| | - M. Mazur
- School of Pharmacy and Chemistry, Liverpool John Moores University, Liverpool L3 3AF, United Kingdom, Faculty of Chemical and Food Technology, Slovak Technical University, SK-812 37 Bratislava, Slovakia, Department of Organic Chemistry 2/NW2, Bremen University, D-283 59 Bremen, Germany, and Chemistry Program, Roosevelt University, 430 South Michigan Avenue, Chicago, Illinois 60605
| | - D. Leibfritz
- School of Pharmacy and Chemistry, Liverpool John Moores University, Liverpool L3 3AF, United Kingdom, Faculty of Chemical and Food Technology, Slovak Technical University, SK-812 37 Bratislava, Slovakia, Department of Organic Chemistry 2/NW2, Bremen University, D-283 59 Bremen, Germany, and Chemistry Program, Roosevelt University, 430 South Michigan Avenue, Chicago, Illinois 60605
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Thomas CJ, McCormick MM, Vialas C, Tao ZF, Leitheiser CJ, Rishel MJ, Wu X, Hecht SM. Alteration of the selectivity of DNA cleavage by a deglycobleomycin analogue containing a trithiazole moiety. J Am Chem Soc 2002; 124:3875-84. [PMID: 11942824 DOI: 10.1021/ja011820u] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The bleomycin (BLM) group of antitumor antibiotics effects DNA cleavage in a sequence-selective manner. Previous studies have indicated that the metal-binding and bithiazole moieties of BLM are both involved in the binding of BLM to DNA. The metal-binding domain is normally the predominant structural element in determining the sequence selectivity of DNA binding, but it has been shown that replacement of the bithiazole moiety with a strong DNA binder can alter the sequence selectivity of DNA binding and cleavage. To further explore the mechanism by which BLM and DNA interact, a trithiazole-containing deglycoBLM analogue was synthesized and tested for its ability to relax supercoiled DNA and cleave linear duplex DNA in a sequence-selective fashion. Also studied was cleavage of a novel RNA substrate. Solid-phase synthesis of the trithiazole deglycoBLM A(5) analogue was achieved using a TentaGel resin containing a Dde linker and elaborated from five key intermediates. The ability of the resulting BLM analogue to relax supercoiled DNA was largely unaffected by introduction of the additional thiazole moiety. Remarkably, while no new sites of DNA cleavage were observed for this analogue, there was a strong preference for cleavage at two 5'-GT-3' sites when a 5'-(32)P end-labeled DNA duplex was used as a substrate. The alteration of sequence selectivity of cleavage was accompanied by some decrease in the potency of DNA cleavage, albeit without a dramatic diminution. In common with BLM, the trithiazole analogue of deglycoBLM A(5) effected both hydrolytic cleavage of RNA in the absence of added metal ion and oxidative cleavage in the presence of Fe(2+) and O(2). In comparison with BLM A(5), the relative efficiencies of hydrolytic cleavage at individual sites were altered.
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Affiliation(s)
- Craig J Thomas
- Department of Chemistry, University of Virginia, Charlottesville, Virginia 22901, USA
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