Dissertations / Theses on the topic 'Pyrazolo[5'
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Ostache, Nicu-Carmin. "Synthèse et fonctionnalisation de bicycles 5-5 polyazotés : pyrazolo[3,4-d]thiazoles et pyrazolo[3,4-c]pyrazoles." Thesis, Orléans, 2019. http://intranet.univ-orleans.fr/bibliotheques/theses/nicu-cosmin-ostache_3378_vm.pdf/.
Full textNitrogen-rich fused bicyclic structures are undisputedly one of the most used scaffolds for therapeutic use.The 5:5 polynitrogenated bicycles are moieties considerably less documented then their 6:6 or 6:5analogues. Despite the pharmacological potential of the pyrazolo[3,4-d]thiazoles and of thepyrazolo[3,4-c]pyrazoles, two examples of such rare families, only few methods of preparation and directfunctionalization of these heterocyclic moieties have been described.In this context, the main goal of our research aims at exploring new routes towards these bicyclic systemsfrom readily available and affordable starting materials. Efficient strategies were developed relying onhydrazine condensations, on intramolecular N-cyclizations, on chemo-selective halogenation and variouscross-coupling reactions. Moreover, the pyrazolo[3,4-d]thiazole entity was fused to a triazapentalenestructure in order to assess the spectroscopic properties
Bassoude, Ibtissam. "Synthèse de nouveaux dérivés pyrazolo[1,5-a]pyrimidiniques à visée biologique." Phd thesis, Université d'Orléans, 2012. http://tel.archives-ouvertes.fr/tel-00789954.
Full textLaube, Markus. "Synthese von Cyclooxygenase-2-Inhibitoren als Grundlage für die funktionelle Charakterisierung der COX-2-Expression mittels PET." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2015. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-160091.
Full textEjjoummany, Abdelaziz. "Design et fonctionnalisation d’hétérocycles originaux de type bicycliques [5-5] et tricycliques [6-5-6] à visée thérapeutique potentielle." Thesis, Orléans, 2020. http://www.theses.fr/2020ORLE3141.
Full textThe access to new original biologically active heterocyclic compounds, is one of the main objectives of our research group. In this context, the main purpose of this thesis is the design of three new families of heterocyclic compounds containing a pyrazolic motif that may exhibit biological activities, namely pyrido[1',2': 1.5]pyrazolo[4,3-d]pyrimidine, pyrrolo[3,4-c]pyrazole and pyrazolo[5,1-b]thiazole.This manuscript is essentially dedicated to a methodology work describing the different routes of access to these originals and potentially modular tricyclic and bicyclic precursors. The reactivity of these key synthons is then studied towards aromatic nucleophilic substitutions reactions and various pallado-catalyzed methods of functionalization (Activation with PyBrOP- (hetero) arylation, Liebeskind-Srogl, Suzuki-Miyaura, Buchwald-Hartwig, C-H arylation, aromatic nucleophilic substitution) to develop interesting libraries built around these unusual structures, thus opening numerous pharmacological perspectives
Bou, Karroum Nour. "Synthèse et développement de nouvelles molécules hétérocycliques tricycliques : étude de leurs propriétés immunomodulatrices." Thesis, Montpellier, 2018. http://www.theses.fr/2018MONTT014/document.
Full textToll-like receptors 7 and 8 play an important role in immune system activation. Their stimulation leads to the production of pro-inflammatory cytokines and type I interferons. Both receptors recognize viral ssRNA, as well as synthetic tricyclic imidazoquinoline derivatives such as imiquimod (TLR7 agonist) and resiquimod (TLR7/8 agonist). These two molecules showed significative anti-cancer and adjuvant activities. Many reports in the literature have been focused on the development of new TLR7/8 agonists belonging to different chemical series. These agonists strongly induce the production of T helper 1-polarizing cytokines and may therefore serve as promising candidate vaccine adjuvants. Despite the essential roles of TLR7 and TLR8 in the immune system stimulation, chronic immune activation may be responsible for several infectious and autoimmune diseases. Consequently, the development of TLR7 inhibitors may play an important role in the therapy of these diseases.In this study, we are interested in the synthesis and development of new heterocyclic molecules, analogs of imiquimod and resiquimod, in order to identify new TLR7 and/or TLR8 ligands. Different synthetic pathways have been developed, using cross coupling reactions, in order to obtain a wide variety of molecules belonging to three chemical series: imidazo[1,2-a]pyrazine, imidazo[1,5-a]quinoxaline et pyrazolo[1,5-a]quinoxaline. Various alkylation reactions were attempted on these three chemical series in order to introduce a wide variety of substituents on the five-membered ring. The application of Sonogashira's cross-coupling allowed us to establish a C-C bond and introduce various alkyl chains. All compounds have been tested for their TLR7/8 agonistic and antagonistic activity using HEK-Blue™-hTLR7/8 cells. The synthesized compounds are completely inactive as TLR7/8 agonists and are selective TLR7 antagonists. Two compounds of the pyrazolo[1,5-a]quinoxaline series, compound 5.35a and 5.35b, bearing butyl and isobutyl chain respectively, are potent and selective TLR7 antagonists with low micromolar IC50. Results allowed us to discover significative activity for the pyrazolo[1,5-a]quinoxaline series as selective TLR7 antagonists, which may therefore play an important role in the therapy of several infectious or autoimmune diseases
Belaroussi, Rabia. "Synthèse et fonctionnalisation de nouveaux dérivés tricycliques [6-5-6] polyhétéroaromatiques à visée thérapeutique potentielle." Thesis, Orléans, 2016. http://www.theses.fr/2016ORLE2002/document.
Full textThe discovery of new candidates to fight against various diseases, namely cancer and neurodegenerative diseases, is one of the main goals of our research group. In this context, the main purpose of this thesis, is the design of two new classes of heterocyclic planar structure, to date, rarely studied, namely pyrido[2’,1’ :1,5]pyrazolo[3,4-d]pyridazines and pyrido[2’,1’ :1,5]pyrazolo[3,4-d]pyrimidines. This manuscript is essentially dedicated to a methodology work describing the different routes of access to these originals and potentially modular tricyclic precursors. The reactivity of these key synthons is then studied towards aromatic nucleophilic substitutions reactions and various palladocatalyzed methods of functionalization (Suzuki-Miyaura, Buchwald-Hartwig, activation PyBrOP-(hetero) arylation) to develop interesting libraries built around these unusual structures, thus opening numerous pharmacologicals perspectives
Oleksik, Laurence. "Methodology for the synthesis of 4 or 5-substituted-3-perfluoroalkyl pyrazoles." Thesis, University of Leicester, 2004. http://hdl.handle.net/2381/30087.
Full textKarahan, Dag Fulya. "Synthesis Of 5-ferrocenyl-4-((4-nitrophenyl)sulfenyl)-1h-pyrazoles By Electrophilic Cyclization." Master's thesis, METU, 2011. http://etd.lib.metu.edu.tr/upload/12613443/index.pdf.
Full textRosales, Pauline Fagundes. "Bi-heterociclos a partir do Ácido Levulínico: Síntese de 5-[(5-(trifluormetil)-5-hidroxi-(3-substituido)-4,5-diidro-1H-pirazol-1-il)-1-propan-1-ona-3-il]-2-metil-7-trifluormetil)pirazolo[1,5-a]pirimidinas." Universidade Federal de Santa Maria, 2013. http://repositorio.ufsm.br/handle/1/10535.
Full textAn efficient method to obtain 2-methyl-5-(methylpropanoate-3-yl)-7-trifluoromethylpyrazolo[1,5-a]pyrimidine 2 from the reaction of compound methyl 7,7,7-trifluoro-4-methoxy-6-oxo-heptenoate with 3-amino-5-methyl-1H-pyrazol. This compound 2 brought to reaction with hydrazine monohydrate to obtain 2-methyl-7-trifluoromethylpyrazolo[1,5-a]pyrimidine-5-propanehydrazine 3 and after were later brought to cyclocondensation reaction with a series of β-alkoxyvinyltrifluoromethyl ketones giving the series of news bi-heterocyclic 5-[(5-(trifluoromethyl)-5-hydroxy- (3-substituted)-4,5-dihydro-1H-pyrazol-1-yl)-1-propan-1-one-3-yl]-2-methyl-7-trifluoro methyl)pyrazolo[1,5-a]pyrimidines compounds 5a-l. Compound 2-methyl-5-(methylpropanoate-3-yl)-7-trifluoromethylpyrazolo[1,5-a]pyrimidine 2 brought to transesterification reaction and hydrolises reaction for obtaining the compounds 6 and 7. The structures of all synthesized compounds were confirmed by 1H, 13C, 19F NMR data, and two-dimensional NMR techniques like HETCOR and COLOC, mass spectrometry data.
Este trabalho descreve um método eficiente para a obtenção de 2-metil-5-(propanoato-3-il de metila)-7-trifluormetilpirazolo[1,5-a]pirimidina 2 a partir da reação de ciclocondensação do composto 7,7,7-trifluor-4-metoxi-6-oxo-4-heptenoato de metila com 3-amino-5-metil-1H-pirazol. Este composto 2 foi levado à reação com monohidrato de hidrazina obtendo-se a 2-metil-7-trifluormetilpirazolo[1,5-a]pirimidina-5-propanohidrazina 3. Posteriormente, o composto 3 foi levado à reação de ciclocondensação do tipo [3+2] com uma série de β-alcoxivniltrifluormetil cetonas alquil e aril substituídas utilizando etanol como solvente, resultando em uma série de compostos bi-heterocíclicos inéditos 5-[(5-trifluormetil)-5-hidróxi-(3-substituidos)-4,5-diidro-1H-pirazol-1-il)-1-propan-1-ona-3-il]-2-metil-7-trifluormetilpirazolo[1,5-a]pirimidina 5a-l. O composto 2-metil-5-(propanoato-3-il de metila)-7-trifluormetilpirazolo[1,5-a]pirimidina 2 foi levado à reação de transesterificação e à reação de hidrólise para a formação dos respectivos compostos 6 e 7. As estruturas de todos os compostos sintetizados foram confirmadas por dados de RMN 1H, 13C, 19F e técnicas de RMN bidimensionais como HETCOR e COLOC, além de dados de espectrometria de massas.
Nadir, Saïd. "Complexes de l'acide 3, 5-pyrazole dicarboxylique : synthèses, études structurales, utilisation pour la préparation de céramiques conductrices." Lille 1, 1996. https://pepite-depot.univ-lille.fr/LIBRE/Th_Num/1996/50376-1996-182.pdf.
Full textGUIGUEMDE, ISSAKA. "Transfert d'ions metalliques divalents entre phases liquides par des bis(5-hydroxy-pyrazol-4-oyl) alcanes; selectivite." Université Louis Pasteur (Strasbourg) (1971-2008), 1992. http://www.theses.fr/1992STR13178.
Full textBacher, W. [Verfasser]. "Zur Reaktion von 4-Acylsubstituiertem 1-Phenyl-3-methyl-pyrazolon-5 mit Actinidenionen in waessriger Loesung / W. Bacher." Karlsruhe : KIT-Bibliothek, 2009. http://d-nb.info/118690495X/34.
Full textGormen, Meral. "Synthesis Of Ferrocenyl Substituted Pyrazoles." Master's thesis, METU, 2005. http://etd.lib.metu.edu.tr/upload/3/12606358/index.pdf.
Full textCHAOUI, ROQUAI M'HAMMED. "Extraction d'indium (iii) en milieu chlorure par le 3-phenyl-4-benzoyl-5-hydroxy-isoxazole. Synergies. Comparaisons avec les 4-acyl-5-hydroxy-pyrazoles." Université Louis Pasteur (Strasbourg) (1971-2008), 1995. http://www.theses.fr/1995STR13134.
Full textRoberts, Thomas David. "Novel ligands based on 2,6-di(1H-pyrazol-5-yl)pyridine derivatives and applications in spin crossover and transfer hydrogenation complexes." Thesis, University of Leeds, 2015. http://etheses.whiterose.ac.uk/9418/.
Full textDesalegn, Nebiyou. "Kinetic Studies Of The Thermolysis Of 3-Halogenated-4,5-Dihydro-3h-Pyrazoles." Digital Archive @ GSU, 2005. http://digitalarchive.gsu.edu/chemistry_theses/1.
Full textHemonic, Danielle. "Etude cinétique et thermodynamique de l'extraction du cuivre par la 1-phényl-3-méthyl-4-stéaroyl-pyrazol-5-one comparaison à d'autres extractants /." Grenoble 2 : ANRT, 1987. http://catalogue.bnf.fr/ark:/12148/cb376059420.
Full textHEMONIC, DANIELE. "Etude cinetique et thermodynamique de l'extraction du cuivre par la 1-phenyl-3-methyl-4-stearoyl-pyrazol-5-one : comparaison a d'autres extractants." Paris, ENMP, 1987. http://www.theses.fr/1987ENMP0156.
Full textSahmoune, Amar. "Extractions synergiques de métaux divalents de transition par association d'une acyl-4-pyrazolone-5 avec des polyéthers cycliques et acycliques." Grenoble 2 : ANRT, 1988. http://catalogue.bnf.fr/ark:/12148/cb37618386w.
Full textSahmoune, Amar. "Extractions synergiques de metaux divalents de transition par association d'une acyl-4-pyrazolone-5 avec des polyethers cycliques et acycliques." Université Louis Pasteur (Strasbourg) (1971-2008), 1988. http://www.theses.fr/1988STR13116.
Full textARICHI, JAOUAD. "Extraction liquide-liquide de terres rares par des 4-acyl-5-hydroxy-pyrazoles et -isoxazoles equilibres et cinetique de transfert. Synergies." Université Louis Pasteur (Strasbourg) (1971-2008), 1998. http://www.theses.fr/1998STR13007.
Full textRUSDIARSO, BAMBANG. "Coextraction de cesium ou de strontium et de cobalt ou de cadmium par des melanges d'acyl-4-pyrazolols-5 et d'ethers couronnes." Université Louis Pasteur (Strasbourg) (1971-2008), 1990. http://www.theses.fr/1990STR13151.
Full textDago, Camille Déliko. "Développement synthétique d'une nouvelle librairie de 5-arylidène rhodanines sous irradiation micro-onde et d'analogues du SKF-96365 comportant des plateformes pyrazole, rhodanine et leurs évaluations biologiques." Thesis, Rennes 1, 2015. http://www.theses.fr/2015REN1S169.
Full textThis thesis work has been aimed the synthesis of new heterocyclic compounds (rhodanines and pyrazoles) potentially active on kinase proteins, tumor cell lines, SOCE impulses (Store Operated Calcium Entry) and has mainly targeted pathologies such as malaria, leishmaniasis and cancer. The first part of this study allowed the synthesis of a new family of 5-arylidene rhodanine derivatives asymmetric having a diamino spacer arm and via microwave technology. Of the 7 protein kinases tested with these compounds, CK1δ/ε and CDK5/p25 have been specifically inhibited with IC50 between 1.1 and 10 µM. The recorded anticancer activity is average with IC50 ranging from 8 to 23 µM. The work carried out during the second part of this study was based on SKF-96365 as structural model and provided access to 3 unpublished libraries of analogs containing pyrazole and rhodanine platforms. The desired pharmacological activity was SOCE modulating and various structural changes were made to undertake a study Structure-Activity Relationship (SAR). Several "pyrazole" analogs have shown a higher activity than SKF-96365 and GSK-7975A on SOCE of HEK-293 line. The two compounds showing the best activity (30f and 30h) are also more active than Synta 66 at low concentrations. These analogs are completely inactive on all protein kinases tested, indicating selectivity for SOCE channels concerned. The most significant IC50 for the anticancer activity vary between 3 and 8 µM
Ambeu, N'ta Christelle. "Synthèse d'analogues de la pentamidine porteurs de plateformes hétérocycliques (rhodanine, benzimidazole, pyrazole et imidazole) et leurs évaluations biologiques." Thesis, Rennes 1, 2015. http://www.theses.fr/2015REN1S137/document.
Full textThis thesis manuscript is focused on the development of multi-steps synthesis strategy of new compounds bearing several heterocyclic platforms (rhodanine, benzimidazole, pyrazole and imidazole) for multiple therapeutic use to fight malaria, leishmaniasis, cancer et neurodegenarative diseases. The pharmacomodulations of these compounds were developped from the design of pentamidine 35 which containins 2 fragments benzamidine (parts ''West'' and ''East''). Indeed, the substitution of its part ''West'' by a platform rhodanine or benzimidazole and its part ''East'' by an "azole" aromatic ring system (pyrazole, imidazole) lead respectively to 5-arylidene rhodanines (50, 58), to derivatives ''aza'' (99,100) and to derivatives ''aza azoles'' 174 which are pentamidine analogs. The chemical yields of these compounds are ranging respectively from 26 to 98%, 10 to 93% and 10 to 97%. All the compounds synthesized in the chapters II, III and IV of this research work were evaluated for their antiproliferative activity on tumoral cell lines and for their inhibitory activity on protein kinases
Zouikri, Mohamed. "Le résidu aza-prolyle, son introduction dans un peptide : modifications structurales dues à la substitution AzPRO/PRO." Vandoeuvre-les-Nancy, INPL, 1996. http://www.theses.fr/1996INPL079N.
Full textCam, Morgane. "Contribution à l'étude de la maladie d'Alzheimer : induction de la production d'amyloïdes beta-42/43 par le fipronil, un pesticide de la famille des phenylpyrazoles : effets cellulaires des Leucettines, une famille d'inhibiteurs des kinases DYRKs/CLKs." Thesis, Strasbourg, 2017. http://www.theses.fr/2017STRAJ060/document.
Full textIn the screening of ‘human chemical exposome’ compounds, triazine herbicides and pyrazole insecticides, especially fipronil, have shown their ability to induce β-amyloid -42 and -43 peptide production. As they tend to aggregate into oligomers then into plaques, they are a characteristic of Alzheimer's disease (AD). This discovery informs about the potential danger of these products and provides tools to decipher the mechanisms leading to the alteration of the ratio of the different forms of amyloid.Moreover, dysregulation of DYRK1A, involved in trisomy 21, also affects these amyloid peptides, as well as the Tau protein which is then hyperphosphorylated and tends to aggregate into neurofibillar tangles, another characteristic of AD. This same effect on Tau is observed with CDK5 in AD, stroke and brain injury. The development of specific pharmacological inhibitors of these two kinases is therefore an issue for ManRos Therapeutics
Holz, Karsten. "Enol-Konjugate von 1-Phenyl-3-methyl-4-amino-3-pyrazolin-5-on als "minor metabolites" im Stoffwechsel von Metamizo. (Novalgin R) : Untersuchungen zur Analytik, zu Nachweis, Bildung und Verbleib metastabiler Phase-II-Metaboliten bei der Ratte /." [S.l. : s.n.], 1997. http://www.gbv.de/dms/bs/toc/226144828.pdf.
Full textDiantouba, Bertin Aimé. "Effets structuraux des acyl-4-pyrazolones-5 dans l'extraction liquide-liquide des cations metalliques divalents." Université Louis Pasteur (Strasbourg) (1971-2008), 1988. http://www.theses.fr/1988STR13093.
Full textHlimi, Fouzia. "Cycloaddition de diarylnitrilimines sur des dérivés de la benzodioxine 1,4 et de la benzoxazine-1,4 : regiochimie de la réaction sur un alcene portant un groupe donneur et un groupe accepteur sur la même extrêmité." Besançon, 1987. http://www.theses.fr/1987BESA2018.
Full textMarouani-Keraghel, Saïda. "Reduction electrochimique de composes d'uranyle en milieu organique." Université Louis Pasteur (Strasbourg) (1971-2008), 1988. http://www.theses.fr/1988STR13175.
Full textLiu, Po-Lin, and 劉柏麟. "One-pot Synthesis of 6-[(Formyl)methyl]-1H-pyrazolo[3,4-d]pyrimidines from 5-(2-Chloroacetylamino)pyrazoles and Bioactivity Study." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/nfamc8.
Full text中國醫藥大學
藥物化學研究所碩士班
102
A new one-pot multicomponent reaction was successfully developed as a key strategy for the synthesis of 6-[(formyl)methyl]-1H-pyrazolo[3,4-d]- pyrimidine compounds from 5-(2-chloroacetylamino)pyrazoles with formamide in presence of PBr3. Under the reliable condition, the tandem multicomponent reactions involving Vilsmeier-Haack reaction, Morgan-Walls reaction, sequential elimination, substitution reaction, and final hydrolysis reaction efficiently afforded formylmethylpyrazolo[3,4-d]pyrimidine products in good yields (73–92%).
Chang, Chun-Hsi, and 張濬璽. "The study of selective synthesis and biological activity of pyrazolo[3,4-d]pyrimidine, N-(1H-pyrazol-5-yl)formamide, or N-(1H-pyrazol-5-yl)formamidine derivatives from N-1-Substituted-5-aminopyrazoles with new Vilsmeier-type reagents." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/95634777776867134802.
Full text中國醫藥大學
藥物化學研究所碩士班
102
Various halomethyleniminium salts as novel Vilsmeier reagents were synthesized from the reaction of formamide or N-methylformamide with phosphoryl chloride. Treatment of N-1-substituted-aminopyrazoles including, N-1-(2-pyridinyl)-5-aminopyrazoles and N-1-(2-quinolinyl)-5-aminopyrazoles with these Vilsmeier reagents to obtain the corresponding pyrazolo[3,4-d]pyrimidine, N-(1H-pyrazol-5-yl)formamide, or N-(1H-pyrazol-5-yl)formamidine products. The experimentant results were different with our previous data which the formylated amidylpyazole and formamidine products were obtained under the similar reaction conditions.
Wen, Kuo-Shan, and 温國山. "Chemoselective synthesis, antiproliferative activities andSAR study of 1H-pyrazol-5-yl-N,N-dimethylformamidines and pyrazolyl-2-azadienes." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/80295522664933598378.
Full text中國醫藥大學
藥物化學研究所碩士班
100
Chemoselective microwave-assisted amidination was successfully developed to alternatively synthesize 1H-pyrazol-5-yl-N,N-dimethyl-formamidine and pyrazolyl-2-azadiene two classes compounds. All of the starting materials and resulting products were tested against NCI-H226, NPC-TW01, and Jurkat cancer cell lines to evaluate their difference in antiproliferative activities for realizing the structure activity relationship study. Following the SAR result, 1H-pyrazol-5-yl-N,N-dimethylformamidine compounds 2b, 2c and 2d possessed the best potent with IC50 values in low micromolar range. On the other hand, we found that the formyl group at C-4 position and the grafted amidinyl group in the main core of pyrazolic molecule were necessary for the inhibitory activity
Chih-Wen, Su, and 蘇志文. "Synthesis of 5-Methyl-2-substituted-2H-pyrazol-3-yl-amine Derivatives." Thesis, 2001. http://ndltd.ncl.edu.tw/handle/67023478991124518308.
Full text國立臺灣科技大學
纖維及高分子工程系
89
In this study, the reaction of acetoacetamide with hydrazine hydrate and phenyl hydrazine was shown to give compounds 3a and 3b. First, the reaction of compounds 7a~7b and 11a~11b with a solution of compounds 3a and 3b in water by nitrosation at position 4 in low temperature, and were coupled with aromatic benzylamine derivatives. Second, the reaction of compound 3a with ethyl acetoacetate, acetoacetamide, phthalic anhydride and nitric acid was shown to give compounds 17, 23, 27 and 30. Third, a solution of compound 3b in ethanol was condensed with aromatic aldehyde derivatives and aromatic nitrosobenzene derivatives by presence of basic catalyst was shown to give compounds 32a~32d and 34a~34b. Finally, these compound were determined the structure by spectrometry(UV、FTIR、1H-NMR) and element analysis(EA).
洪讚誠. "Synthesis and thermal reaction of dimethyl-3, 3-cyclopentyl-3H-pyrazole-4, 5-dicarboxylate." Thesis, 1998. http://ndltd.ncl.edu.tw/handle/46555386938756761561.
Full text靜宜大學
應用化學研究所
86
Thermolysis of dimethy1-3,3-cyclopentyl-3H-pyrazole-4,5-dicarboxylate(20) afforded dimethy1-4,5,6,7-tetrahydroindazole-2,5-dicarboxylate(24) and dimethy1-1,5-tetramethylene-pyrazole-3,4-dicarboxylate(25) in 69% and 8%, respectively. The mechanism of this reaction is suggested to undergo two competitive pathways. (1)After heating the compound 20 can undergo ring expansion(1,5-sigmatropic migration), i.e. the cyclopentyl group can ring-expand form C3 to N2 to form the compound. 25. (2) Alternatively, the cyclopentyl group of the compound 20 can undergo ring expansion from C3 to C4, and the ester group at C4 can simultaneously migrate to N2(1,5-anticlockwise) to form the compound 24. The activation energy of the thermal reaction of compound 20 was measured be 8.6kcal/mole.k
Fang, Mei-Chi, and 方美琪. "Synthesis and anticancer activity of3-(5-hydroxymethyl-2-furyl)-1-phenyl-selenolo[3,2-c]pyrazole analogs." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/81435999910390680889.
Full text中國醫藥大學
藥物化學研究所碩士班
97
1-Benzyl-3-(5-hydroxymethyl-2-furyl)indazole (YC-1) was has been identified as a potential antitumor agent. In order to extend the structure-activity relationships of YC-1 analogs, in this study a series of selenolo[3,2-c]pyrazoles were synthesized as target compounds. The key intermediates 7-8 were synthesized by reacting acyl chlorides 5-6 with methyl furan-2-carboxylate. The reacted intermediates 7-8 were then treated with phenylhydrazine or substituted phenylhydrazine to give the corresponding hydrazones 9-17. The above hydrazones were then treated with mixed reagents of lead tetraacetate and boron trifluoride etherate cyclization to yield the designed compounds 27-35. These selenolo[3,2-c]pyrazoles 27-35 were reduced with calcium borohydride to afford their corresponding carbinol derivatives 36-40 and hydrolyzed to give their corresponding carboxylic acids 41-42.The newly synthesized compounds 27-42 were evaluated for their cytotoxicity against human renal A-498 and non-small cell lung cancer NCI-H226 cell lines. The results demonstrate that the carbinol derivatives 3-(5-hydroxymethyl-2-furyl)-1-phenyl-5-methylselenolo[3,2-c]pyrazole- (36) and 3-(5-hydroxymethyl-2-furyl)-1-phenylselenolo[3,2-c]pyrazole- (37) show significant cytotoxity against human renal cancer cell line A498.
Břečková, Anna. "Železo-chelatační vlastnosti vybraných nových chelátorů ze skupiny 4-acyl-5-pyrazolonů II." Master's thesis, 2012. http://www.nusl.cz/ntk/nusl-310538.
Full textChang, Wei Chou, and 張為舟. "Synthesis and Properties of Bisheterocyclic Mono and Disazo Dyes based on 5-Amino-3-Methyl- Pyrazole Compound." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/28114396055994828055.
Full text國立臺灣科技大學
高分子工程系
94
In this study,5-amino-3-methyl-4-(6’-substituted-bezothiazol-ylazo)-pyrazole compounds have been synthesized by the cyclocondensation reaction of 2-(2’-hydrozone-3’-ketimino- butyro-nitrile)-6-substituted-benzothiazole with hydrazine hydrate.The dyes were dehydrated with 4-substituted-benzal -dehyde to give 5-(4’-substituted-benzylideneamino)-4-(6’-sub-stituted benzothiazolylazo)-3-methyl-pyrazole,and obtained 5-(4’-substituted-phenylazo)-4-(6’-substituted-benzothiazolylazo)-3-methyl-pyrazole by coupled with 4-substituted-benzene. The structures of these compounds were determined by spectrometry of FT-IR and 1H-NMR etc. We also researchin wavelength of bisheterocyclic mono and disazo dyes.
Lei-Yea and 王麗雅. "Synthesis and antipletelet activities of 1-substituted 5-methyl-3-phenylfuro[3,2-c]pyrazoles." Thesis, 1993. http://ndltd.ncl.edu.tw/handle/21141569518536257109.
Full text中國醫藥學院
藥物化學研究所
81
A series of 1-substituted 5-methyl-3-phenylfuro[3,2-c] pyrazoles(III1-11) and its intermediates (II1-13) have been synthesized,and evaluated for antipletelet activities.Most of them showed significant effect on the inhibition of platelet aggregation that induced by collagen and arachidonic acid. Among them 5-methyl-2-furyl phenyl ketone 3',4'-dichlorophenyl hydrazone (II6) was the most promising and therefore the action mechanism of this compound was further studied.When 5-methyl-2 -furyl phenyl ketone 4-chlorophenylhydrazone treat with lead tetraacetate,boron trifluoride etherate to carry out oxidative cyclization,side product p-chlorobiphenyl also obtained. Therefore we react substituted pphenylhydrazine with benzene or toluene in the present of lead tetraacetate,we can obtain high yield of biphenyl deratives.The application and the really mechanism were worthy of further studied.
Su, Wei-Nien, and 蘇威年. "Convenient and Efficient“One-pot”Synthesis of N-(1,3-Diphenyl-1H-pyrazole-5-yl)amide Derivatives: Positive allosteric Modulators of mGluR5." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/14099096043064355484.
Full text中國醫藥大學
藥物化學研究所
96
Glutamate is the major excitatory transmitter in the mammalian central nervous system. Metabotropic glutamate receptors (mGluRs) play an important role in controlling neuronal excitability and synaptic transmission in the central nervous system (CNS) of the mammalian brain. N-(1.3-Diphenylare1-H-pyrazol-5-yl)benzamide derivatives were recently developed as the first centrally active positive allosteric modulator of rat and human metabotropic glutamate receptor mGluR5 subtype. N-(1,3- diphenyl-1H-pyrazol-5-yl)amide derivatives were convenient and efficient synthesized by using phenylhydrazine, benzoylacetonitrile, and a series of acylation agents. Two steps of condensation-cyclization and acylation were performed in one-pot to give the corresponding N-(1,3-diphenyl-1H-pyrazol-5-yl)amide analogues in good to excellent yields (70–90%).
陳孟榆. "Pyrazole Calix[4]arenes as Highly Selective Fluorogenic Sensors for Silver (I) and Mercury (II) and Synthesis of Pillar[5]arene Derivatives." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/04499796060226609005.
Full text國立交通大學
應用化學系碩博士班
99
This study is divided into two parts. First, two series of lower-rim modified calix[4]arene with pyrazole substituents were synthesized. Using phenyl pyrazole calix[4]arenes as basic synthesis frameworks, we synthesized phenylanthryl pyrazole calix[4]arenes 76 and 77 and control compounds 78 and 79 as fluorogenic ions sensors. Based on the results from UV-Vis, fluorescence and 1H-NMR spectrometry, we found that pyrazole calix[4]arenes 77 and 79 recognized Ag+ and Hg2+ with excellent selectivity in MeOH/CHCl3 (v/v = 4:1), respectively. Compound 77 induced 141% enhancement of fluorescence intensity toward Ag+, and compound 79 showed 51% fluorescence quenching effect toward Hg2+.Furthermore, the complexation of compound 77 with Ag+ and 79 with Hg2+ both showed 1:1 host-guest stoichiometry based on by Job plot obtained from fluorescence and 1H-NMR titration spectra. We also found the binding constants of 77 with Ag+ was (1.12 ± 0.17) × 104 M-1 and 79 with Hg2+ was (1.33 ± 0.20) × 104 M-1.Second, the research was focused on the reaction condition to synthesize pillar[5]arenes. Pillar[5]arenes 38 and 83 were successfully and facile synthesized by cyclization reaction with high yield. These compounds were obtained via borontrifloride etherate catalyzed procedure with 1,4-dialkoxyphenyl monomer and paraformaldehyde under 0.1 M solution. Besides, a synthetic route to difunctional pillar[5]arene 95 was also developed by combining two different monomers with 4:1 ratio using the conditions stated above.
Lee, Kun-Ti, and 李昆諦. "(I) Synthesis of Triphenylenyl Triazole Bridged Bispillar[5]arene as Fluorogenic Sensor of Pyridinium and Imidazolium Cations (II) Pyrene Pyrazole Functionalized Calix[4]arene as Highly Selective Fluorogenic Sensor for Silver (I) and Mercury (II) ions." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/4bbh2q.
Full text國立交通大學
應用化學系碩博士班
105
In this study, we have synthesized triphenylenyl triazole bridged pillar[5]arene dimer, triphenylenyl triazole substituted pillar[5]arene and stilbene triazole bridged pillar[5]arene dimer as compound 37, 41, 47, respectively. Based on the results from UV-Vis absorption spectroscopy and fluorescence emission spectroscopy, compound 37 showed good binding abilities toward pyridinium cations G3-G4 and imidazolium cation G5, and compound 41 showed good binding abilities toward G5 only. But, we won’t study compound 47 furthmore, which fluorescence characteristic vanished after exposured by UV light, because of trans-cis isomerism of stilbene group. According to the more detail research of UV-Vis spectroscopy, fluorescence spectroscopy, Hill plot and 1H NMR titration, we found that binding ability 37•G3 > 37•G5 > 37•G4, which binding constant were 2.21 × 105 M-2, 5.83 × 104 M-2 and 2.12 × 104 M-1, determing by Hill equation. Furthermore, the high resoluition mass spectrometry showed that the binding ratio of 37 toward G3, G5 and G4 were 1:2, 1:2 and 1:1, respectively. The same method were used to confirm that binding constant and binding ratio of compound 41 toward G5 were 4.37 × 103 M-1 and 1:1. Compound 37 showed binding abilities toward imidazolium cations guest G6-G8, which have different anion Cl-, BF4- and PF6-. Fluorescence intensity of host 37 have best fluorescence enhancement effect when G8 was added, compared with G5-G7. However, there is no significant difference of binding constant between guest G8-G11, which alkyl group have different carbon chain length, toward compound 37. Based on the discussion of binding ability of compound 37 toward G8-G11 and 1H NMR titration, we surmised that guest compounds using cation side to penetrate into the cavity of pillar[5]arene from the side without substituted or bridged group and alkyl chain of guest are outside host cavity. The other part of the study is according to the previous work of laboratory upperclassmen, Yin-Ju Chen. In his study, he reported the synthesis of a pyrazolyl methylpyrene functionalized calix[4]arene 28 and 1,3-alternate calix[4]arene 29 with pyrazolyl methylpyrene on the one end and triazolylphenyl on the other end. These two compound showed good binding ability toward Ag+ and Hg2+, but the binding ratio of compound 28 toward metal ion was ambiguous and compound 29 lack the control compound 58 to comparison. Therefore, we prepared compound 28 and confirmed the binding ratio were 1:1 toward Ag+ and Hg2+ by Job plot and high resoluition mass spectrometry. Besides, we successfully synthesized control compound 58. Based on the results from UV-Vis spectroscopy and fluorescence spectroscopy, same as compound 28, 29, compound 58 showed good binding abilities toward Ag+ and Hg2+, and binding constant were calculated for 3.89 × 107 M-4 and 3.06 × 107 M-4 by Hill equation. Compared with compound 28, 29, binding constant 29·Ag+ > 58·Ag+ > 28·Ag+ and 29·Hg2+ > 58·Hg2+ > 28·Ag2+. This result indicated the propyl group at the upper-rim of control compound 58 would assist to bind metal ion, although it’s not effective as triazole group. According to the binding constant order, Hill plot, Job plot and 1H NMR titration, we surmised that compound 58 have binding ratio 2:3 toward Ag+ and Hg2+.