Academic literature on the topic 'Imidazo[1,2-b]pyridazine'
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Journal articles on the topic "Imidazo[1,2-b]pyridazine"
Schmitt, Martine, Jean-Jacques Bourguignon, Gordon B. Barlin, and Les P. Davies. "Imidazo[1,2-b]pyridazines. XXIV Syntheses of Some 3-(Variously Substituted) Imidazo[1,2-b] pyridazines, 6-Substituted 2-Benzoyl- imidazo[1,2-b]pyridazines and Pyrimido[1,2-b]pyridazin- 5-ium-3-olates and their Interaction with Central and Mitochondrial Benzodiazepine Receptors." Australian Journal of Chemistry 50, no. 8 (1997): 779. http://dx.doi.org/10.1071/c97030.
Full textBarlin, GB. "Imidazo[1,2-B]Pyridazines. I. Some 3-Alkoxy-6-Halogeno-2-Phenyl-(and 4′-Substituted Phenyl)Imidazo[1,2-B]Pyridazines and 3-Methoxy-2,6-Diphenylimidazo[1,2-B]Pyridazine." Australian Journal of Chemistry 39, no. 11 (1986): 1803. http://dx.doi.org/10.1071/ch9861803.
Full textBarlin, GB, LP Davies, PW Harrison, NW Jacobsen, and AC Willis. "Imidazo[1,2-b]Pyridazines. XVI. Synthesis and Central Nervous System Activities of Some 6-(Chloro, Alkylthio, Phenylthio, Benzylthio or Pyridinylmethylthio)-3-(unsubstituted, benzamidomethyl or methoxy)-2-(styryl or benzoyl)imidazo[1,2-b]pyridazines." Australian Journal of Chemistry 47, no. 11 (1994): 1989. http://dx.doi.org/10.1071/ch9941989.
Full textBarlin, Gordon B., Les P. Davies, and Peter W. Harrison. "Imidazo[1,2-b]pyridazines. XXI. Syntheses of some 3-Acylaminomethyl-6-(chloro and iodo)- 2-(substituted phenyl)-imidazo[1,2-b]pyridazines and -imidazo[1,2-a]pyridines and their Interaction with Central and Mitochondrial Benzodiazepine." Australian Journal of Chemistry 50, no. 1 (1997): 61. http://dx.doi.org/10.1071/c96130.
Full textBarlin, Gordon B., Les P. Davies, Stephen J. Ireland, and Maria M. L. Ngu-Schwemlein. "Imidazo[1,2-b]pyridazines. XXII. Syntheses of Some 2-Aryl-3-methoxy-6-(pyridinylmethylthio and pyridinylmethylamino)imidazo[1,2-b]pyridazines and Their Interaction with Central and Mitochondrial (Peripheral-Type) Benzodiazepine Receptors." Australian Journal of Chemistry 50, no. 2 (1997): 91. http://dx.doi.org/10.1071/c96136.
Full textBarlin, GB, LP Davies, B. Glenn, PW Harrison, and SJ Ireland. "Imidazo[1,2-b]pyridazines. XV. Synthesis and Anxiolytic Activity of Some 3-(Benzamidomethyl and fluorobenzamidomethyl)-6-(fluoro, chloro and methylthio)-2-(4-tolyl and 3,4-methylenedioxyphenyl)imidazo[1,2-b]pyridazines." Australian Journal of Chemistry 47, no. 4 (1994): 609. http://dx.doi.org/10.1071/ch9940609.
Full textBarlin, GB, LP Davies, and MML Ngu. "Imidazo[1,2-b]Pyridazines. VIII. Syntheses and Central Nervous System Activities of Some 6-Benzylamino (and methoxybenzylamino)-3-methoxy-2-phenyl(Substituted phenyl or pyridinyl)imidazo[1,2-b]pyridazines." Australian Journal of Chemistry 42, no. 10 (1989): 1759. http://dx.doi.org/10.1071/ch9891759.
Full textDelaye, Pierre-Olivier, Mélanie Pénichon, Leslie Boudesocque-Delaye, Cécile Enguehard-Gueiffier, and Alain Gueiffier. "Natural Deep Eutectic Solvents as Sustainable Solvents for Suzuki–Miyaura Cross-Coupling Reactions Applied to Imidazo-Fused Heterocycles." SynOpen 02, no. 04 (October 2018): 0306–11. http://dx.doi.org/10.1055/s-0037-1610400.
Full textSharma, Rakesh Kumar, Manisha Singh, Khagendra Ghimeray, Pinky Juneja, Gagan Dev, Sridhar Pulavarthi, Sabbasani Rajasekhara Reddy, and Ravi Shankar Akundi. "Imidazopyridazine Acetylcholinesterase Inhibitors Display Potent Anti-Proliferative Effects in the Human Neuroblastoma Cell-Line, IMR-32." Molecules 26, no. 17 (September 1, 2021): 5319. http://dx.doi.org/10.3390/molecules26175319.
Full textAbd El-Salam, Nasser M., Mohamed S. Mostafa, Gamal A. Ahmed, and Othman Y. Alothman. "Synthesis and Antimicrobial Activities of Some New Heterocyclic Compounds Based on 6-Chloropyridazine-3(2H)-thione." Journal of Chemistry 2013 (2013): 1–8. http://dx.doi.org/10.1155/2013/890617.
Full textDissertations / Theses on the topic "Imidazo[1,2-b]pyridazine"
Oudot, Romain. "Synthèse de dérivés imidazo[1,2-a] pyridines et imidazo[1,2-b] pyridazines tricycliques." Thesis, Tours, 2009. http://www.theses.fr/2009TOUR3804.
Full textThe imidazo[1,2-a]pyridines and imidazo[1,2-b]pyridazines moeities are very studied by scientific community, specially in therapeutic field. This is mostly due to recent progress in metallocatalyzed couplings which allow easier functionnalization of these structures. However, the tricyclic derivatives of these compounds remained not very studied despite important biological properties of some of there isosters. This thesis is divided in two parts : -The synthesis of imidazo[1,2-b]pyridazines with a dinitrogenated third cycle between the positions 7 and 8 in collaboration with Sanofi-Aventis. These new compounds were a real chemical challenge and their synthesis required important works of development. We used various metallocatalyzed couplings methods. -The synthesis of imidazo[1,2-a]pyridines with a pyridinic cycle between the positions 2 and 3. These molecules, poorly described in the literature, have never been subject to biological study. In order to effectively synthesize an interesting range of these structures, I have developed a new heterocyclization method which allows us to obtain in two steps, starting from commercialy available starting materials, some original tricyclics compounds
Hervet, Maud. "Réactions d'arylation et d'hétéroarylation métallo-catalysées en séries imidazo[1,2-α]pyridine et imidazo[1,2-β]pyridazine." Tours, 2002. http://www.theses.fr/2002TOUR3803.
Full textAs part of our on-going efforts to study the reactivity and pharmacological properties of bridgehead nitrogen heterocycles developped in our laboratory, we turned out our attention to new methods of arylation and heteroarylation reactions of imidazoazines. In order to realize this study, we investigated the metallo-catalyzed cross-coupling between aryl halides or sulfonates and organometallic compounds which constitute the most powerful C(sp²)-C(sp²) bond-forming reactions. We chose to study four cross-coupling reactions which are widely used in organic chemistry : Suzuki, Kumada, Negishi and Stille. In each case, the two possible ways of functionalization were investigated, from the halogenoimidazoazine or its corresponding organometallic derivative. Our initial forays was the investigation of reactivity of 3 and 6 positions of imidazo[1,2-α]pyridines and imidazo[1,2-β]pyridazines toward the Suzuki-type reaction. Then, each coupling method was applied on the 3 and 6 positions of imidazo[1,2-α]pyridine in order to establish optimal conditions of functionnalization
Ezzili, Cyrine. "Voies d'accès aux imidazo[1,2-b]pyridazines par synthèse parallèle." Paris 11, 2005. http://www.theses.fr/2005PA112371.
Full textMy PhD project deals with the discovery of new access to imidazo[1,2-b]pyridazines derivatives. This work was conducted in a close collaboration between the Fournier laboratories and the CEA (CIFRE contract). Our project was limited to the use of synthesis that undergo combinatorial chemistry and permit the production of several hundread of molecules. Three strategies were studied. The first one was based on the cyclisation of Tschitschibabin. This reaction lies on a condensation between an aminopyridazine and an alpha-halocarbonyle derivative. All the conditions carried out were not successuful for the production of libraries. In this field, we have imagined a new way to synthesize our heterocycle which we named the inversed Tschitschibabin’s cyclisation. The first step is the formation of an amide from an aminopyridazine and an alpha-bromocarboxylic acid. The obtained product is cyclised to the desired 2-hydroxyimidazo[1,2-b]pyridazine structure. The second strategy studied has allowed the synthesis of a pivotal scaffold for which we introduced three points of diversity by well known organic reactions. We have synthesised a 440-member imidazo[1,2-b]pyridazine library. The last strategy is inspired from a multicomponent reaction which involves an amine, an haldehyde and an isocyanide. This reaction allows the production of a large number of moleules in one step using combinatorial techniques. Unfortunatley, all the conditions carried out were not successuful for the production of libraries
Grosse, Sandrine. "Imidazo[1, 2-b]pyrazoles, imidazo[1, 2-a]imidazoles : synthèse, fonctionnalisation et évaluation biologique." Thesis, Orléans, 2013. http://www.theses.fr/2013ORLE2056.
Full textImidazo[1,2-b]pyrazoles and imidazo[1,2-a]imidazoles are entities with some interesting applications in pharmacology. However, despite this potential, few methods of preparation and direct functionalisation of the heterocyclic moiety have been described. In this context, the overall goal of our research is to develop new routes to these bicyclic systems from readily available starting materials. Strategies of functionalisation of the heterocyclic moiety were then explored in order to design diversified libraries for the evaluation of potential biological activities. Herein, the results of the tests of imidazo[1,2-b]pyrazole series against various cancer lines are reported
N'gompaza, Diarra Joannah. "Synthèse et évaluation biologique d’imidazo[1,2-b]pyridazines et de purines inhibitrices de protéines kinases." Thesis, Paris 5, 2012. http://www.theses.fr/2012PA05P613/document.
Full textThis thesis focuses on the synthesis and biological evaluation of new kinase inhibitors. Kinase deregulation is associated with numerous diseases such as cancer or neurodegenerative diseases. In the first part of this work, 2,6,9-trisubstituted purines bearing at C-2 position aminodiols derivatives were prepared. Aminodiols were obtained either via Sharpless asymmetric dihydroxylation or by reduction of amino esters. The compounds appeared to be more potent against kinases than (R)-roscovitine which is presently undergoing phase II clinical tests. In particular, inhibition of CK1, CDK5 and CDK9 were observed with IC50 < 200 nM. The compounds prepared showed an antiproliferative effect against tumor cell-lines (SH-SY5Y). Eventually, one of the most promising compounds was assayed against a series of cyt P450 enzymes and did not showed any inhibition (IC50 > 5 μM). The second family of compounds prepared in this work is imidazo[1,2-b]pyridazines. A new route to 3,6,8-trisubstituted imidazo[1,2-b]pyridazines was first developed. These products were shown to be highly potent inhibitors of several kinases such as CDK5 and CK1 (IC50 < 50 nM). The kinase inhibitions were accompanied by antiproliferative activities against tumor cell-lines. Finally, a series of 3,6-disubtituted imidazo[1,2-b]pyridazines was also prepared and appeared to be selective inhibitors of CLK1 (IC50 < 100 nM)
Bendjeddou, Lyamin. "Synthèse et évaluation biologique de nouveaux inhibiteurs de kinases : identification d‘inhibiteurs de kinases parasitaires." Thesis, Paris 5, 2014. http://www.theses.fr/2014PA05P615.
Full textPhosphorylation by protein kinases is one of the most important post-translational modification in cellular processes such as division, differentiation, proliferation and apoptosis. Kinase deregulation is associated with numerous diseases such as cancer or neurodegenerative diseases. Imidazo[1,2-b]pyridazine and imidazo[4,5-b]pyridine were prepared to inhibit protein kinases involved in diseases targeted in the laboratory. The imidazo[1,2-b]pyridazines were synthesized to identify inhibitors of CLK1 and DYRK1A, potential targets in Alzheimer's disease. Among the imidazo[1,2-b]pyridazines synthesized, several molecules were found selective of DYRKs and CLKs, with IC50 < 100 nM. A structure-activity relationship based on the synthesis of 70 molecules, led to the identification of the structural bases of the selectivity. Products were also evaluated against parasite kinases. It was possible to identify some highly potent inhibitors on PfCLK1. The aim of second part of this thesis was to optimize the synthetic process to obtain imidazo[4,5-b]pyridines, which are close analogues of roscovitine. Derivatives had proved capable of inhibiting the formation of cysts in a cellular model of polycystic kidney disease. A seven-step synthesis has led to several grams of 3,5,7-trisubstituted imidazo[4,5-b]pyridine which is now available for evaluation in vivo
Pellegatti, Laurent. "Méthodologie en chimie hétérocyclique et application à la synthèse d'inhibiteurs de kinases." Thesis, Orléans, 2010. http://www.theses.fr/2010ORLE2046.
Full textCancer, one of the leading causes of death, represents today a major public health problem. Over the last few years, marine alkaloids represent a source of inspiration for chemists in order to obtain new anticancer drugs. For this purpose, as a part of our laboratory researches, analogues of marine alkaloids were synthesized possessing a tris-aromatic structure. We developed originals analogs of these alacaloïds formed by a central heterocycle core (1,2,4-triazine et imidazo[1,2-b][1,2,4,5]tetrazine) on wich is graft two arylic moiety variously substituted. Obtaining these compounds was also an opportunity to develop news synthetic methodologies. So a new Buchwald-Hartwig reaction type based on methylsulfanyl-1,2,4-triazines has been perfect, as palladocatalyzed CH arylation pathway on imidazo[1,2-b][1,2,4,5]tetrazine. A part is devoted to Groebke-Blackburn multicomponant reaction. Various pharmacological analyses were carried out in particular with inhibition of various kinases and cytotoxicity evaluation on various human cancer cell lines
Blaise, Emilie. "Contribution à l'étude chimique et pharmacochimique de dérivés mono- bi- et tricycliques de pyridazines." Thesis, Strasbourg, 2014. http://www.theses.fr/2014STRAF018/document.
Full textDYRK1A protein kinase belongs to the CMGC group and is involved in neurodegenerative disorders such as Alzheimer’s disease.In this context we examined an imidazo[1,2-B]pyridazine hit identified by biological screening, through detailed structure-Activity relationship studies. This compound was used to synthesize DYRK1A ATP-Competitive inhibitors by using metallo-Catalyzed methodologies (Pd, Cu) in order to introduce various functionalized moieties.Out of the 60 derivatives synthesized, 7 compounds showed nanomolar activities (IC50 = 41-130 nM).Beside this work of medicinal chemistry, new synthetic methodologies has been developed to regioselectively access polysubstituted pyridazine derivatives. Finally, we developed data and concepts to establish virtual pyridazine libraries for in silico screening
Bahlaouan, Zineb. "Réactivité cupro-catalysée des systèmes mono, di et triiodés porteurs d'une fonction acide carboxylique ou dérivée : applications à la synthèse de nouveaux hétérocycles." Thesis, Tours, 2011. http://www.theses.fr/2011TOUR4035/document.
Full textHeterocycles of oxygen, nitrogen and sulfur are patterns found in many natural products possessing interesting biological activities. Several researchers describe the synthesis of oxygen and nitrogen based heterocycles using transition metals as catalyst.In the present study, we focused initially on the copper-catalyzed synthesis of pyrano[3',4':4,5]imidazo[1,2-a]pyridin-1-ones by a tandem coupling-heterocyclisation reaction from derivatives of 3-iodo-, 3,6- or (3,8) diiodoimidazo[1,2-a]pyridine-2-carboxylic acid and terminal alkynes in the presence of copper (I) salts as catalyst in DMF. This procedure does not require the use of any expensive transition metal complexes like palladium and supplement any additives. The extension of this methodology to 2,3,5-triiodobenzoic acid allowed the regioselective synthesis of new isocoumarins substituted in positions 3, 5 and 7. Regioselective reactivity of iodine atoms in position 5 and 7 has been studied by palladium coupling reactions and nucleophilic substitution to broad its synthesis to a wide variety of new substituted isocoumarins
Juillet, Charlotte. "Conception, synthèse et évaluation pharmacologique d’analogues simplifiés de métabolites marins, inhibiteurs de la kinase Aurora B, à visée anticancéreuse." Thesis, université Paris-Saclay, 2020. http://www.theses.fr/2020UPASF019.
Full textThis manuscript describes the design, synthesis and biological evaluation of oroidin analogs. Oroidin is a monomer of benzosceptrin C, belonging to the pyrrole-2-aminoimidazole family, isolated from marine sponges. The simplification and structural diversification approaches led us to the identification of a non-natural hit displaying selective inhibitory activity against the kinase Aurora B. This kinase plays a key role in cell division and its inhibition leads to severe mitotic abnormalities. Aurora B is found to be up-regulated in many human cancers, indicating that this kinase is a cancer-relevant target. The objective of the study at the interface between chemistry and biology is to optimize the discovered hit into a lead. The hit scaffold is divided in three parts: the 4,5-dibromopyrrole, the imidazo[1,2-a]pyrimidine and the alkyne moieties. After the first introductive chapter, chapters II to IV are dedicated to the pharmacomodulations of each part. We finally managed to synthesize eighty-two analogs for in vitro evaluations toward Aurora B and a panel of kinases involved in diverse human pathologies. Several compounds were found to be very active with IC50 down to 34 nM, displaying a 150-fold higher activity than the initial hit. The last chapter discusses the mode of action of the most active inhibitors from the hit expansion. The enzymatic kinetic assays revealed an uncommon mode of action with allosteric inhibitors (type IV) of Aurora B. Immunostaining experiments highlighted the typical effects of Aurora B inhibition in treated cells as well as its quantification. At last, molecular docking study with the best inhibitor showed the most probable allosteric binding pocket of Aurora B, providing crucial support in hit-to-lead optimization. In conclusion and perspectives, the efforts to be pursued in order to improve physicochemical and pharmacokinetic properties in the lead-to-candidate process are pointed
Book chapters on the topic "Imidazo[1,2-b]pyridazine"
"Dibenzo-1,4λ4-dithiin to 1,2-Dihydro-11bH-isoquinolino[2,1-b]pyridazine." In Substance Index Cyclic Compounds VIII, Tricyclic compounds II, edited by Büchel, Falbe, Hagemann, Hanack, Klamann, Kreher, Kropf, Regitz, and Schaumann. Stuttgart: Georg Thieme Verlag, 2000. http://dx.doi.org/10.1055/b-0035-114902.
Full text"2,3,6,8,9,10,12,13-Octahydro-1H,5H-imidazo[1,2-d]imidazo[2',1:7,1][1,4]diazepino[6,5-f][1,4]diazepine (18) to 26,27-dinor-Cholest-5-ene (17)." In Substance Index Cyclic Compounds VIII, Polycyclic Compounds I, edited by Backes, Fröhlich, and Padeken. Stuttgart: Georg Thieme Verlag, 2001. http://dx.doi.org/10.1055/b-0035-114399.
Full textConference papers on the topic "Imidazo[1,2-b]pyridazine"
Tarby, Christine M., Liqi He, Brian E. Fink, Andrew Nation, Yufen Zhao, Soong-Hoon Kim, Libing Chen, et al. "Abstract 5417: The identification of BMS-595, an orally active imidazo[1,2-b]pyridazine CK2 inhibitor with in vivo anti-tumor activity." In Proceedings: AACR 106th Annual Meeting 2015; April 18-22, 2015; Philadelphia, PA. American Association for Cancer Research, 2015. http://dx.doi.org/10.1158/1538-7445.am2015-5417.
Full textFidanze, Steve D., Scott A. Erickson, Robert D. Hubbard, Gary T. Wang, Robert A. Mantei, Nwe Y. BaMaung, Richard F. Clark, et al. "Abstract A245: Imidazo[2,1‐b]thiazole and imidazo[1,2‐a]pyridine amides as novel inhibitors of the insulin‐like growth factor (IGF1R) and members of the epidermal growth factor family of tyrosine kinases." In Abstracts: AACR-NCI-EORTC International Conference: Molecular Targets and Cancer Therapeutics--Nov 15-19, 2009; Boston, MA. American Association for Cancer Research, 2009. http://dx.doi.org/10.1158/1535-7163.targ-09-a245.
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