Dissertations / Theses on the topic 'Diazépines'
Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles
Consult the top 17 dissertations / theses for your research on the topic 'Diazépines.'
Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.
You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.
Browse dissertations / theses on a wide variety of disciplines and organise your bibliography correctly.
Daich, Adam. "Contribution à l'étude de thiazocines et de diazépines condensés : agents à potentialités biologiques." Le Havre, 1991. http://www.theses.fr/1991LEHA0009.
Full textBoulouard, Michel. "Synthèse et étude physicochimique de nouvelles pyrrolo [1,2-a] thieno [3,2-f] et [2,3-f [1,4] diazépines à visée thérapeutique." Caen, 1991. http://www.theses.fr/1991CAEN4037.
Full textChédru, Christophe. "Annelations en série furannique et pyrrolique ou pyrrolidinique : accès à des diazépines et a des oxazocines." Le Havre, 1994. http://www.theses.fr/1994LEHA0004.
Full textXiao, Feng. "Synthèse et étude physico-chimique de nouvelles furopyrrolopyrazines, furopyrrolodiazépines et furopyrrolizines à visée thérapeutique." Caen, 2005. http://www.theses.fr/2005CAEN4003.
Full textRault, Isabelle. "Synthèse et étude physicochimique de nouvelles pyrrolo (1,2-a) thieno (3,2-f) (1,4) diazépines à visée thérapeutique." Caen, 1993. http://www.theses.fr/1993CAEN4055.
Full textOhier, Philippe. "Réactions d'annelation en diazépines, oxazocines, diazocines et indolines fusionnées à un cycle thiophène ou [1] benzothiophène." Le Havre, 1995. http://www.theses.fr/1995LEHA0003.
Full textBrouillette, Yann. "Étude chimique des Thiéno[d]oxacine-2,4-diones pour l'accés à de nouvelles diazépines, imidazolidines et pyridinones en série thiophénique." Montpellier 1, 2008. http://www.theses.fr/2008MON13511.
Full textKashef, Hussein El. "Synthèse et étude physicochimique de nouveaux systèmes hétérocycliques : benzothiénopyrrolopyrazines, benzothiénopyrrolodiazépines et benzothiénopyrrolizines." Caen, 1994. http://www.theses.fr/1994CAEN4051.
Full textJourdan, Fabrice. "Synthèse, études physicochimique et pharmacologique d'inhibiteurs potentiels de la transcriptase inverse comprenant différents analogues de nucléosides cycliques et acycliques thiéno et dihydrothiénopyrimidiniques, différentes pyridin-2-ones et pyrido[3,2-ƒ]pyrollo[1,2-a]diazépines." Caen, 1996. http://www.theses.fr/1996CAEN4018.
Full textArama, Patomo Dominique. "Conception et synthèse de nouveaux inhibiteurs de la kallicréine 7." Thesis, Montpellier, 2015. http://www.theses.fr/2015MONT3503/document.
Full textHuman tissular kallikreins (KLKs) are members of (chymo)trypsin-like serine proteases, involved in various physiological pathways. Among the 15 known isoforms in the literature, kallikrein 7 (KLK7) plays a significant role in physiological and pathophysiological processes of the skin, like psoriasis and the Netherton syndrome. Several studies report also its implication in multiple processes leading to invasive and metastatic tumor growth, especially in prostatic, ovarian and pancreatic cancers. Strategies focused on KLK7 inhibition are a promising alternative for the treatment of such dermatological diseases, and to avoid metastatic dissemination. In the last two decades, many synthetic inhibitors of this KLK isoform have been developed. However, most of these molecules exhibit low selectivity and unsuitable physicochemical properties for in vivo use. This thesis is devoted to the synthesis of selective and reversible inhibitors of KLK7. Two series of compounds have been explored. The first one, derived from a screening of pyrido-imidazodiazepinones compounds, which led to the discovery of a reversible and selective inhibitor of KLK7, JMV4967 (IC50 = 57.0 µM). This compound is characterized by the presence of an ortho methyl substituted phenyl group, at position 2 of the diazepine ring. Based on these results, a structure-activity relationships (SAR) study was initiated. The best inhibitions were obtained with JMV4967analogs bearing a 3,4,5- trimethoxyphenyl group or 3,4- dimethoxyphenyl group, at position 2 of the diazepine ring. This study led to the discovery of one compound, JMV5046 (IC50 = 33.5 µM). A biochemical study of JMV5046, highlighted its reversible and competitive behavior against the substrate in the KLK7 active site, as previously observed for the initial hit. The second series was developed from an amino-benzimidazole substituted quinazoline, and a SAR study was also carried out. A chemical reactivity study was also initiated to access two new series of imidazo[1,2-a]pyridine-fused or indole-fused diazepine compounds. This study showed that 2-amino-imidazopyridine could undergo alkylation at position 3 of the ring, in the nitro-Michael reaction context. The obtained Michael adducts could then give, after reduction of the nitro group, the corresponding diazepine derivatives. We also showed that, in the presence of an acyl donor (as an activated amino acid ester), 2-amino-indole was N-acylated, unlike the 2-amino-imidazopyridine which leads to an exclusive C-acylation in the same conditions. The N-acylated derivatives were then used for the indolodiazepines synthesis, using Pictet-Spengler cyclization reaction.The synthesis of these compounds and their inhibiting activity against KLK7 are described. Molecular modeling experiments by in silico docking, to determine the structural requirements for KLK7 inhibition by JMV5046, are also presented
El, Mahdi Ouafâa. "Synthèse de cyclodipeptides à sept chaînons à partir de "Bêta"-aminoacides pyrazoliques et de "Bêta"-aminoacides fonctionnalisés." Montpellier 2, 1997. http://www.theses.fr/1997MON20162.
Full textTallon, Valérie. "Fonctionnalisation des quinoxalines et des cinnolines par réaction d'ortho-métallation." Rouen, 1996. http://www.theses.fr/1996ROUES041.
Full textLe, Baccon-Sollier Paul. "Détermination du mécanisme d'action de diazépinones ciblant le mélanome." Thesis, Montpellier, 2020. http://www.theses.fr/2020MONTT001.
Full textMelanoma is the deadliest form of skin cancer. This aggressiveness is due to a strong tendency to metastasize, resulting in a poor prognosis. Despite the introduction in 2011 of innovative therapeutic strategies (kinase inhibitors and immunotherapies), patients still face innate or acquired resistance and these new treatments offer only partial and temporary improvement. Due to an ever increasing global incidence, the development of new drugs and new therapeutic combinations acting against metastatic melanoma (MM) is a major public health challenge.JMV5038, a pyrido-imidazo [1,3] diazepinone produced by the team, had shown during a screening on the 60 cancer cell lines panel of the National Cancer Institute, a particularly interesting activity (GI50 of the order micromolar) on several lines. These results have been confirmed within our institute on several human malignant melanoma lines (MDA-MB-43, A375). The objective of this thesis was to clarify, by in vitro studies using as cell models 3 human lines of malignant melanoma (A375, MDA-MB-435, B16F10), the mechanism of action (MOA) of JMV5038. Our experimental strategy revolved around three objectives: (a) determining the intracellular localization of JMV5038, (b) developing tools to identify its pharmacological target(s) and (c) clarifying its molecular action mechanism. Raman imaging has proven to be the most suitable technique for determining the location/distribution of JMV5038, a small active molecule which is not intrinsically fluorescent. An accumulation of JMV5038 in the peri-membrane space of melanoma cells was thus demonstrated. From JMV5038, we developed pre-probes that will allow the identification of the pharmacological targets of JMV5038 in cellulo, by a chemical proteomic approach based on click-chemistry. This chemical development has also given us valuable information on the structure activity relationships (SAR) of diazepinones. Finally, functional studies have allowed us to make significant progress in the understanding of the MOA of JMV5038. Indeed, we have shown that the anti-tumor activity of JMV5038 is associated with an indirect and atypical inhibition of the Chk1 protein, involved in the DNA-damage responses pathway. This inhibition is due to an increase of the S280 phosphorylation of Chk1, leading to a modification of its location (cytoplasmic accumulation) and therefore potentially an inhibition of its activity. This defect in the ATR/Chk1 axis then leads to sensitization of cancer cells to replicative stress, characterized by a mitotic catastrophe and cell death by apoptosis. Finally, we have shown that apoptosis induced by JMV5038 leads to the release of signals that can trigger an immune response. JMV5038 would therefore be an original and relevant candidate to develop a new family of agents to be used, either in combination with conventional chemotherapies inducing replicative stress, or in association with recent immunotherapies, in order to stimulate and potentiate their anti-cancer therapeutic activity
Mojovic, Ljubica. "Métallations et synthèses en série pyrazinique et pyridazinique." Rouen, 1990. http://www.theses.fr/1990ROUES033.
Full textDorey, Gilbert. "Étude de l'importance de l'orientation de la fonction carbonylée de carbonyl-3 béta-carbolines sur l'affinité pour le récepteur des benzodiazépines : synthèse d'un nouvel hybride de type diazépino-béta-carboline." Paris 11, 1989. http://www.theses.fr/1989PA112416.
Full textIn the first part of this thesis, the influence of the C-3 carbonyl group conformation of 3-carboxy- β-carbolines on their benzodiazepine receptor affinities was studied. For this purpose rigid -carboline analogues in which the carbonyl group was restrained in an s-cis position were synthesized. Evaluation of the in vitro binding affinities of these derivatives permitted confirmation of our working hypothesis that the s-cis conformation of active 3-carboxy β-carboline is preferentially recognized by the benzodiazepine receptor. In the second part, a contribution to a study of the structure-activity relationships of a new family of benzodiazepine receptor ligands was made. Finally, in the third pan of the thesis, attempts to synthesize a new family of diazepine- β-carboline hybrids are described. The various strategies used for this purpose, of which one was successful, also led to the synthesis of novel tetracyclic β-carbolines displaying very high receptor affinities in vitro
Deaudelin, Philippe. "Synthèse de mimes peptidiques pyrrolo[3,2-e][1,4]diazépin-2-one." Thèse, 2008. http://hdl.handle.net/1866/7820.
Full textDufour-Gallant, Julien. "Synthèse en phase solide de pyrrolo[3,2-e][1,4]diazépin-2-ones modulateurs du système urotensinergétique." Thèse, 2016. http://hdl.handle.net/1866/18417.
Full textThe pyrrolodiazepinones have interesting biological activities on various biological receptors, which makes them a prime target for developing new biologically active small molecules. A methodology in solution had been developed for synthesizing pyrrolo[3,2-e][1,4]diazepin-2-ones, which utilized the Pictet-Spengler condensation as the key reaction to form the diazepinone ring. Pyrrolo[3,2-e][1,4]diazepin-2-ones were found to mimic an inverse γ-turn conformation by X-ray crystallographic analysis. The methodology was subsequently implemented on three types of support: Merrifield resin, Wang resin and the soluble TAP support. The urotensinergic system plays a role in certain diseases of the cardiovascular system, such as hypertension, heart failure and atherosclerosis. The urotensinergic system is expressed in the circulatory system, excretory and central nervous systems and includes the endogenous ligands urotensin II (UII) and urotensin II-related peptide (URP), and the urotensin receptor UT. The ligands UII and human URP are composed of the respective amino acid sequences: H-Glu-Thr-Pro-Asp-c[Cys-Phe-Trp-Lys-Tyr-Cys]-Val-OH and H-Ala-c[Cys-Phe-Lys-Tyr-Trp-Cys]-Val-OH. The peptide UII is the most potent vasoconstrictor known to date. The two peptides have different biological effects and may exhibit distinct roles in certain diseases. Their common Trp-Lys-Tyr sequence is believed to play an important role in the activity of UII and URP, and has been suggested to adopt an inverse γ-turn conformation. Notably, the laboratory of Professor David Chatenet developed the UT receptor antagonist peptide urocontrin by replacing the Trp residue by biphenylalanine (Bip) in URP. A library of pyrrolo[3,2-e][1,4]diazepin-2-one analogs was thus designed to mimic the inverse γ-turn sequence and targeted against UT. The pyrrolo[3,2-e][1,4]diazepin-2-one library was designed based on the Trp-Lys-Tyr sequence of UII and URP, and Trp-Lys-Bip sequence of urocontrin. The synthesis of the pyrrolo[3,2-e][1,4]diazepin-2-one library was achieved on Wang resin. The side chain of Tyr was mimicked using tyramine, Lys and Orn were used as the basic amino acid component, and the side chain of Trp was replicated using biphenyl (as in urocontrin) 1-naphthyl and 2-naphthyl groups that were introduced by employing their respective aldehydes in a Pictet-Spengler reaction, which furnished unsaturated and saturated S- and R-pyrrolo[3,2-e][1,4]diazepin-2-ones. Evaluation of the biological activity of the pyrrolo[3,2-e][1,4]diazepin-2-ones on the UT receptor was performed in vitro and ex vivo. Tests in vitro measured binding in CHO-cells which expressed UT by employing hUII-125I as radiolabeled control. In rat aorta, ex vivo tests measured capacity to induce contraction, or modulate the contractions induced by hUII and URP. Certain R-pyrrolo[3,2-e][1,4]diazepin-2-ones caused an up to 50% reduction of the radioactive signal of hUII-125I. Pyrrolo[3,2-e][1,4]diazepin-2-ones exhibited little activity ex vivo; however, they modulated contractions induced by hUII and URP. For example, the saturated R-analog possessing lysine and a biphenyl side chain inhibited completely hUII-induced contractions of the aorta at 14 µM with a pKb of 5.54 at 4 µM, without influencing URP-induced contractions. Pyrrolo[3,2-e][1,4]diazepin-2-ones were selective for the urotensinergic system and inactive on the related receptor endothelin-1. Pyrrolo[3,2-e][1,4]diazepin-2-ones represent the first small molecules that can differently modulate the biological activities of UII and URP, and offer interesting potential as tools for studying the urotensinergic system.