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Synthesis of a combinatorial compound library based on the double click reaction
Krutáková, Mária ; Zitko, Jan (advisor) ; Kučerová, Marta (referee)
(English) Charles University Faculty of Pharmacy in Hradec Králové Department of Pharmaceutical Chemistry and Pharmaceutical Analysis Author: Mária Krutáková Supervisor: Assoc. Prof. PharmDr. Jan Zitko, Ph.D. Title: Synthesis of a combinatorial compound library based on the double click reaction Click chemistry is a powerful tool in drug discovery. It is very efficient in creating compound libraries through the combinatorial methodology. The copper(I)-catalyzed 1,2,3-triazole- forming reaction between azides and terminal alkynes has become the gold standard of click chemistry due to high reaction efficiency, mild reaction conditions, chemo- and regioselectivities. The molecules with triazole moiety display a broad spectrum of favorable properties and have been used in the development of antibacterial, antiviral, anti-inflammatory, anticancer, and anti-tubercular agents. This work focused on preparing a compound library using double-click reactions. Firstly, we synthesized several compounds with two alkyne groups ("alkyne cores") and a diverse group of structurally simple azides. In the next step, one equivalent of alkyne core was reacted with two equivalents of all prepared azides. The reaction between each alkyne core and ten azides yielded 100 compounds. The prepared libraries of compounds were...
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Amaryllidaceae alkaloids as inspiration for preparation of selective butyrylcholinesterase inhibitors I
Wisura, Matěj ; Cahlíková, Lucie (advisor) ; Kučerová, Marta (referee)
Charles University Faculty of Pharmacy in Hradec Králové Department of Pharmaceutical Botany Candidate: Matěj Wisura Supervisor: prof. Ing. Lucie Cahlíková, Ph.D. Title of diploma thesis: Amaryllidaceae alkaloids as inspiration for preparation of selective butyrylcholinesterase inhibitors I The Amaryllidaceae family is considered to be very important source of biologicaly active natural compounds, alkaloids. These compounds are intensively studied because of their antiviral, antifungal, antiparasitic, antioxidative and antiinflammatory properties and especially for their ability to inhibit cholinesterases. This source is still not entirely depleted, which is proved by recent isolation of utterly new structural type of Amaryllidaceae alkaloids, carltonines, isolated form Narcissus pseudonarcissus cv. Carlton. Carltonines have shown promissing inhibitory activity of BuChE. Isolation of carltonines has become an inspiration for synthesis of highly selective BuChE inhibitors based on norbelladine structural type. This diploma thesis proceeds from pilot series of 20 compounds. During this study, another 21 compounds were prepared, expanding the portfolio and knowledge of structure-activity relationships within selective BuChE inhibitors group. Generated compounds were identified using NMR and ESI-HRMS....
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Synthesis of thiazolidin-2,4-dione derivatives as potential drugs III
Fontánová, Karolína ; Kučerová, Marta (advisor) ; Zitko, Jan (referee)
Charles University Faculty of Pharmacy in Hradec Králové Department of Pharmaceutical Chemistry and Pharmaceutical Analysis Title of diploma thesis: Synthesis of thiazolidine-2,4-dione derivatives as potential drugs III Student: Karolína Fontánová Supervisor: PharmDr. Marta Kučerová, Ph.D. The theoretical part is focused on the biological activity of thiazolidine-2,4-dione (TZD) derivatives, especially on their antibacterial (including antimycobacterial) and antifungal effects. The cited literature shows that in many cases the presence of an aromatically substituted thiazolidine-2,4-dione nucleus in the molecule conditions antimicrobial activity. TZD derivatives seem to be suitable candidates for the development of new drugs. In the experimental part molecular docking of a series of 5-(hetero)arylmethylidenethiazolidine-2,4-diones, including the substances synthesized by us, was performed into the MurD ligase of E. coli. Furthermore eleven syntheses of 5-(hetero)arylmethylidenethiazolidine-2,4-diones were performed using Knoevenagel condensation of TZD with (hetero)aromatic aldehydes. Ten products were successfully synthesized and were characterized by melting points, NMR, IR, and MS spectra, and their purity was verified by accomplishment of elemental analysis. The obtained substances were tested...
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Synthesis of new antimitotic agents
Hoppová, Martina ; Kučerová, Marta (advisor) ; Miletín, Miroslav (referee)
Charles University Faculty of Pharmacy in Hradec Králové Department of Pharmaceutical Chemistry and Pharmaceutical Analysis Student: Martina Hoppová Supervisors: PharmDr. Marta Kučerová, Ph.D.; Dr. Rafael Peláez Lamamie de Clairac Arroyo Title of diploma thesis: Synthesis of new antimitotic agents Cancer is one of the main causes of death all around the world and therefore the development of new chemotherapeutic drugs is one of the major areas of pharmaceutical research. The effort is to obtain an agent that would be highly effective, target the neoplastic tissue, and have advantageous pharmacological properties and minimum side effects. Rapid proliferation is one of the main features of cancerous growth, thus influencing mitosis as the phase of cell division may be a convenient way for cancer treatment. Tubulin is a protein, which rapidly polymerizes into microtubules and again depolymerizes and beside others it forms mitotic spindle during mitosis, and according to its important role, tubulin is an attractive target for antitumoral agents. Many drugs inhibiting polymerization or stabilizing already formed microtubules are actually in clinical practice, and research regarding new antimitotics interacting with tubulin is going on at the same time. Such an example is natural combretastatin A-4...
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Oxadiazoles as potential drugs III.
Lukáčová, Michaela ; Kučerová, Marta (advisor) ; Krátký, Martin (referee)
Charles University Faculty of Pharmacy in Hradec Králové Department of Pharmaceutical Chemistry and Pharmaceutical Analysis Title of diploma thesis: Oxadiazoles as potential drugs III. Student: Michaela Lukáčová Supervisor: PharmDr. Marta Kučerová, Ph.D. Theoretical part of this diploma thesis summarises biological activity of 1,2,4-oxadiazoles, while focusing primarily on their antimycobacterial, antibacterial and antifungal effects. 1,2,4-Oxadiazoles are compounds with versatile biological applications, therefore their antioxidant, antiinflammatory, analgesic and cytostatic activity is also mentioned. Based on the facts in the theoretical part, it is perceptible, that 1,2,4-oxadiazoles are substances with great therapeutical potential not only for the treatment of tuberculosis, but also many other diseases. Thus, the experimental part of this work is focused on the synthesis of 5-substituted 3-pyrazinyl-1,2,4-oxadiazoles followed by evaluation of their antibacterial, antifungal and most importantly antimycobacterial activity. Synthesic procedure for each compound is also included. Nine compounds were successfully synthesized, six of them were prepared by reaction of N'-hydroxypyrazine-2-carboximidamide with different carboxylic acid anhydrides and three of them by reaction of...
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Creation of a virtual library of synthetic compounds for practical use in a molecular modelling study
Vávrová, Jitka ; Kučerová, Marta (advisor) ; Zitko, Jan (referee)
Charles University, Pharmaceutical Faculty in Hradec Králové Department: Department of Pharmaceutical Chemistry and Pharmaceutical Analysis Candidate: Jitka Vávrová Supervisor: PharmDr. Marta Kučerová, Ph.D. Title of Diploma Thesis: Creation of a virtual library of synthetic compounds for practical use in a molecular modelling study Drug development is a process requiring the analysis of a large amount of data.Creating a virtual library of synthesized compounds provides access to primary data concerning structure, results of biological activity studies, and molecular descriptors necessary for drug- like prediction. Chemical databases are usually used in virtual screening, which is a modern strategy of Computer Assisted Drug Design (CADD). Molecular docking is one of the methods. Microsoft Excel was used to create the database, which includes different structural types, e.g., pyrazine, rhodanine, thiazolidin-2,4-dione, and 1,2,4-oxadiazole derivatives prepared in the research group Design and Development of New Antimicrobial Agents. Molecules are available in a spreadsheet containing all compounds in a line-notation ready-to- dock format. To demonstrate this database's actual usage, a molecular modelling study was performed using the software Molecular Operating Environment (MOE). This study...
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Synthesis of novel 5,6-disubstituted derivatives of uracil as potential drugs
Vu, Lien Phuong ; Kučerová, Marta (advisor) ; Zimčík, Petr (referee)
Charles University Faculty of Pharmacy in Hradec Králové Department of Pharmaceutical Chemistry and Pharmaceutical Analysis Candidate: Vu Lien Phuong Supervisors: PharmDr. Marta Kučerová, Ph.D. Tanja Bruun, M.Sc. (Pharm.) Prof. Jari Yli-Kauhaluoma Title of diploma thesis: Synthesis of novel 5,6-disubstituted derivatives of uracil as potential drugs In this thesis, uracil was used as the core structure given its many biological activities that were reported such as antitumor, antiviral, antibiotic, hypoglycemic, diuretic and many others. The work was focused on the preparation of new 5,6- disubstituted uracil derivatives as potential biologically active agents. 2,4,6-Trichloropyrimidine was used for the preparation of 6-chlorouracil that was condensed with phenols or anilines to give the respective 6-phenoxyuracils and 6- phenylaminouracils. These intermediates were then modified in position 5 to give the final products. For this very challenging last step, various alkylating and acylating agents were used, e.g. Vilsmeier reagent, alkylchlorides, chloroacetyl chloride, ethyl chlorooxoacetate and ethyl bromoacetate. In the end, ethyl bromoacetate gave the most promising results affording four novel 5,6-disubstituted uracil derivatives. During the experimental work it was found that pH of water used...
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Synthesis and biological evaluation of purine inhibitors of phosphatidylinositol 3-kinases and related protein kinases II.
Vejrychová, Kateřina ; Opletalová, Veronika (advisor) ; Kučerová, Marta (referee)
Charles University Faculty of Pharmacy in Hradec Králové Department of Pharmaceutical Chemistry and Drug Control Student: Kateřina Vejrychová Supervizor: Assoc. Prof. RNDr. Veronika Opletalová, Ph.D. Consultant: Mgr. Martin Andrš Title of diploma thesis: Synthesis and biological evaluation of purine inhibitors of phosphatidylinositol-3-kinases and related protein kinases II Cancer is a serious disease with an uncertain prognosis and difficult treatment. Nowadays, cancer is one of the most common causes of death worldwide. Options of therapies are evolving every year; nevertheless, we still do not have effective treatment available for all types of tumours. Patients often undergo conventional cytotoxic therapy or radiotherapy, which unfortunately have many side effects and they are not always effective. One of the highly researched ways how to make this treatment more effective is to disrupt corrective mechanisms of DNA damage, which are the essence of radiotherapy and some chemotherapeutics. For this purpose, phosphatidylinositol-3-kinase-related proteinkinases, especially DNA-dependent proteinkinase (DNA-PK) seem to be very useful, because they are highly involved in DNA repair. In this diploma thesis, 12 potential inhibitors of DNA- PK were prepared, from which 9 substances were tested alone on 9...
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