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Electro-generated ortho-quinoide intermediates: templates for feasible construction of a series of novel imidazo[2,1-b]thiazole derivatives through one-pot five-step domino hetero-annulation process. RESEARCH ON CHEMICAL INTERMEDIATES 2014. [DOI: 10.1007/s11164-014-1731-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Belal A, El-Gendy BEDM. Pyrrolizines: Promising scaffolds for anticancer drugs. Bioorg Med Chem 2014; 22:46-53. [DOI: 10.1016/j.bmc.2013.11.040] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2013] [Revised: 11/12/2013] [Accepted: 11/20/2013] [Indexed: 10/25/2022]
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Hao W, Zeng J, Cai M. The copper(i)-catalyzed tandem reaction of o-alkynylphenyl isothiocyanates with isocyanides: a rapid synthesis of 5H-benzo[d]imidazo[5,1-b][1,3]thiazines. Chem Commun (Camb) 2014; 50:11686-9. [DOI: 10.1039/c4cc04057k] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An efficient route to 5H-benzo[d]imidazo[5,1-b][1,3]thiazines has been developed using the copper(i)-catalyzed tandem reaction of o-alkynylphenyl isothiocyanates with isocyanides in THF with Cs2CO3 as base.
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Affiliation(s)
- Wenyan Hao
- College of Chemistry & Chemical Engineering
- Jiangxi Normal University
- Nanchang 330022, People's Republic of China
| | - Jiangbo Zeng
- College of Chemistry & Chemical Engineering
- Jiangxi Normal University
- Nanchang 330022, People's Republic of China
| | - Mingzhong Cai
- College of Chemistry & Chemical Engineering
- Jiangxi Normal University
- Nanchang 330022, People's Republic of China
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Khodaei MM, Alizadeh A, Kanjouri T. An Efficient, One-Pot, Green Synthesis of Tetracyclic Imidazo[2,1-b]ThiazolesviaElectrochemically Induced Tandem Heteroannulation Reactions. J Heterocycl Chem 2013. [DOI: 10.1002/jhet.959] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Abdulla ZM, Iyer RP, Akamanchi KG, Degani MS, Coutinho EC. Synthesis of bis-pyrrole tetra esters and alcohols as novel mimetics of the anticancer mitomycin. J Heterocycl Chem 2010. [DOI: 10.1002/jhet.495] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Klok RP, Klein PJ, Herscheid JDM, Windhorst AD. Synthesis ofN-(3-[18F]Fluoropropyl)-2β-carbomethoxy-3β-(4-iodophenyl)nortropane ([18F]FP-β-CIT). J Labelled Comp Radiopharm 2006. [DOI: 10.1002/jlcr.1043] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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David-Cordonnier MH, Laine W, Lansiaux A, Rosu F, Colson P, de Pauw E, Michel S, Tillequin F, Koch M, Hickman JA, Pierré A, Bailly C. Covalent binding of antitumor benzoacronycines to double-stranded DNA induces helix opening and the formation of single-stranded DNA: Unique consequences of a novel DNA-bonding mechanism. Mol Cancer Ther 2005. [DOI: 10.1158/1535-7163.71.4.1] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
The majority of DNA-binding small molecules known thus far stabilize duplex DNA against heat denaturation. A high, drug-induced increase in the melting temperature (Tm) of DNA is generally viewed as a good criterion to select DNA ligands and is a common feature of several anticancer drugs such as intercalators (e.g., anthracyclines) and alkylators (e.g., ecteinascidin 743). The reverse situation (destabilization of DNA to facilitate its denaturation) may be an attractive option for the identification of therapeutic agents acting on the DNA structure. We have identified the tumor-active benzoacronycine derivative S23906-1 [(±)-cis-1,2-diacetoxy-6-methoxy-3,3,14-trimethyl-1,2,3,14-tetrahydro-7H-benzo[b]pyrano[3,2]acridin-7-one] as a potent DNA alkylating agent endowed with a helicase-like activity. Using complementary molecular approaches, we show that covalent binding to DNA of the diacetate compound S23906-1 and its monoacetate analogue S28687-1 induces a marked destabilization of the double helix with the formation of alkylated ssDNA. The DNA-bonding properties and effects on DNA structure of a series of benzoacronycine derivatives, including the dicarbamate analogue S29385-1, were studied using complementary biochemical (electromobility shift assay, nuclease S1 mapping) and spectroscopic (fluorescence and Tm measurements) approaches. Alkylation of guanines in DNA by S28687-1 leads to a local denaturation of DNA, which becomes susceptible to cleavage by nuclease S1 and significantly decreases the Tm of DNA. The drug also directly alkylates single-strand DNA, but mass spectrometry experiments indicate that guanines in duplexes are largely preferred over single-stranded structures. This molecular study expands the repertoire of DNA-binding mechanisms and provides a new dimension for DNA recognition by small molecules.
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Affiliation(s)
- Marie-Hélène David-Cordonnier
- 1Institut National de la Santé et de la Recherche Médicale U-524 et Laboratoire de Pharmacologie Antitumorale du Centre Oscar Lambret, Institut de Recherches sur le Cancer de Lille, Lille, France
| | - William Laine
- 1Institut National de la Santé et de la Recherche Médicale U-524 et Laboratoire de Pharmacologie Antitumorale du Centre Oscar Lambret, Institut de Recherches sur le Cancer de Lille, Lille, France
| | - Amélie Lansiaux
- 1Institut National de la Santé et de la Recherche Médicale U-524 et Laboratoire de Pharmacologie Antitumorale du Centre Oscar Lambret, Institut de Recherches sur le Cancer de Lille, Lille, France
| | - Frédéric Rosu
- 2Biospectroscopy and Physical Chemistry Unit, University of Liege, Sart-Tilman, Liege, Belgium
| | - Pierre Colson
- 2Biospectroscopy and Physical Chemistry Unit, University of Liege, Sart-Tilman, Liege, Belgium
| | - Edwin de Pauw
- 2Biospectroscopy and Physical Chemistry Unit, University of Liege, Sart-Tilman, Liege, Belgium
| | - Sylvie Michel
- 3Laboratoire de Pharmacognosie, Université René Descartes (Paris 5), Centre National de la Recherche Scientifique UMR8638, Faculté des Sciences Pharmaceutiques et Biologiques, Paris, France; and
| | - Francois Tillequin
- 3Laboratoire de Pharmacognosie, Université René Descartes (Paris 5), Centre National de la Recherche Scientifique UMR8638, Faculté des Sciences Pharmaceutiques et Biologiques, Paris, France; and
| | - Michel Koch
- 3Laboratoire de Pharmacognosie, Université René Descartes (Paris 5), Centre National de la Recherche Scientifique UMR8638, Faculté des Sciences Pharmaceutiques et Biologiques, Paris, France; and
| | - John A. Hickman
- 4Division Recherche Cancérologie, Institut de Recherches Servier, Croissy sur Seine, France
| | - Alain Pierré
- 4Division Recherche Cancérologie, Institut de Recherches Servier, Croissy sur Seine, France
| | - Christian Bailly
- 1Institut National de la Santé et de la Recherche Médicale U-524 et Laboratoire de Pharmacologie Antitumorale du Centre Oscar Lambret, Institut de Recherches sur le Cancer de Lille, Lille, France
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Landreau C, Deniaud D, Meslin JC. From thiourea to bicyclic structures: an original route to imidazo[2,1-b]thiazoles, 5H-thiazolo[3,2-a]pyrimidines, 7H-imidazo[2,1-b][1,3]thiazines, and 2H,6H-pyrimido[2,1-b][1,3]thiazines. J Org Chem 2003; 68:4912-7. [PMID: 12790599 DOI: 10.1021/jo034381l] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We report an example of an efficient regioselective synthesis of biheterocyclic compounds using thiourea as starting material. In fact, N,N'-bis(dimethylaminomethylene)thiourea (1), easily prepared by double condensation of N,N-dimethylformamide dimethyl acetal with thiourea, can be reacted with haloketones or acrylic dienophiles to give thiazolic (2) and thiazinic (3) diazadienes, respectively, themselves undergoing cyclization reactions to yield imidazo[2,1-b]thiazoles, 5H-thiazolo[3,2-a]pyrimidines, 7H-imidazo[2,1-b][1,3]thiazines, and 2H,6H-pyrimido[2,1-b][1,3]thiazines without any regioisomeric ambiguity. This straightforward route represents an original and unambiguously regioselective pathway to these valuable heterocycles.
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Affiliation(s)
- Cyrille Landreau
- Laboratoire de Synthèse Organique, UMR CNRS 6513, Faculté des Sciences et des Techniques, 2 Rue de la Houssinière, 44322 Nantes Cedex 03, France
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Murray V. A survey of the sequence-specific interaction of damaging agents with DNA: emphasis on antitumor agents. PROGRESS IN NUCLEIC ACID RESEARCH AND MOLECULAR BIOLOGY 1999; 63:367-415. [PMID: 10506836 DOI: 10.1016/s0079-6603(08)60727-8] [Citation(s) in RCA: 43] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/02/2022]
Abstract
This article reviews the literature concerning the sequence specificity of DNA-damaging agents. DNA-damaging agents are widely used in cancer chemotherapy. It is important to understand fully the determinants of DNA sequence specificity so that more effective DNA-damaging agents can be developed as antitumor drugs. There are five main methods of DNA sequence specificity analysis: cleavage of end-labeled fragments, linear amplification with Taq DNA polymerase, ligation-mediated polymerase chain reaction (PCR), single-strand ligation PCR, and footprinting. The DNA sequence specificity in purified DNA and in intact mammalian cells is reviewed for several classes of DNA-damaging agent. These include agents that form covalent adducts with DNA, free radical generators, topoisomerase inhibitors, intercalators and minor groove binders, enzymes, and electromagnetic radiation. The main sites of adduct formation are at the N-7 of guanine in the major groove of DNA and the N-3 of adenine in the minor groove, whereas free radical generators abstract hydrogen from the deoxyribose sugar and topoisomerase inhibitors cause enzyme-DNA cross-links to form. Several issues involved in the determination of the DNA sequence specificity are discussed. The future directions of the field, with respect to cancer chemotherapy, are also examined.
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Affiliation(s)
- V Murray
- School of Biochemistry and Molecular Genetics, University of New South Wales, Sydney, Australia
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Atwell GJ, Fan JY, Tan K, Denny WA. DNA-Directed alkylating agents. 7. Synthesis, DNA interaction, and antitumor activity of bis(hydroxymethyl)- and bis(carbamate)-substituted pyrrolizines and imidazoles. J Med Chem 1998; 41:4744-54. [PMID: 9822545 DOI: 10.1021/jm9803119] [Citation(s) in RCA: 64] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A series of bis(hydroxymethyl)-substituted imidazoles, thioimidazoles, and pyrrolizines and related bis(carbamates), linked to either 9-anilinoacridine (intercalating) or 4-(4-quinolinylamino)benzamide (minor groove binding) carriers, were synthesized and evaluated for sequence-specific DNA alkylation and cytotoxicity. The imidazole and thioimidazole analogues were prepared by initial synthesis of [(4-aminophenyl)alkyl]imidazole-, thioimidazole-, or pyrrolizine dicarboxylates, coupling of these with the desired carrier, and reduction to give the required bis(hydroxymethyl) alkylating moiety. The pyrrolizines were the most reactive alkylators, followed by the thioimidazoles, while the imidazoles were unreactive. The pyrrolizines and some of the thioimidazoles cross-linked DNA, as measured by agarose gel electrophoresis. Strand cleavage assays showed that none of the compounds reacted at purine N7 or N3 sites in the gpt region of the plasmid gpt2Eco, but the polymerase stop assay showed patterns of G-alkylation in C-rich regions. The corresponding thioimidazole bis(carbamates) were more selective than the bis(hydroxymethyl) pyrrolizines, with high-intensity bands at 5'-NCCN, 5'-NGCN and 5'-NCGN sequences in the PCR stopping assay ( indicates block sites). The data suggest that these targeted compounds, like the known thioimidazole bis(carbamate) carmethizole, alkylate exclusively at guanine residues via the 2-amino group, with little or no alkylation at N3 and N7 guanine or adenine sites. The cytotoxicities of the compounds correlated broadly with their reactivities, with the bis(hydroxymethyl)imidazoles being the least cytotoxic (IC50s >1 microM; P388 leukemia) and with the intercalator-linked analogues being more cytotoxic than the corresponding minor-groove-targeted ones. This was true also for the more reactive thioimidazole bis(carbamates) (IC50s 0.8 and 11 microM, respectively), but both were more active than the analogous "untargeted" carmethizole (IC50 20 microM). The bis(hydroxymethyl)pyrrolizine analogues were the most cytotoxic, with IC50s as low as 0.03 microM.
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Affiliation(s)
- G J Atwell
- Auckland Cancer Society Research Centre, Faculty of Medicine and Health Science, The University of Auckland, Private Bag 92019, Auckland, New Zealand
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Jebaratnam DJ, Arya DP, Chen H, Kugabalasooriar S, Duc Vo. A single precursor approach to new DNA cleaving and crosslinking agents. Bioorg Med Chem Lett 1995. [DOI: 10.1016/0960-894x(95)00193-w] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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