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Dissertations / Theses on the topic 'Quantitative structure-activity relationship (QSAR)'

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Published: 4 June 2021

Last updated: 25 July 2025

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1

Reddy, Badinehal Asrith. "COMMERCIALIZATION OF A QUANTITATIVE STRUCTURE ACTIVITY RELATIONSHIP TOOL - SARCHITECT." Case Western Reserve University School of Graduate Studies / OhioLINK, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=case1295637833.

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2

Smith, Mark David. "A quantitative structure-activity relationship (QSAR) study of the Ames mutagenicity assay." Thesis, University of Portsmouth, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.343333.

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In-vitro mutagenicity assays have traditionally been used for first line identification of potential genotoxic hazard, purporting to chemical carcinogenesis and heritable genetic damage. The recent advances m combinatorial chemistry and high throughput screening technologies have led to a massive explosion in numbers of possible therapeutic candidates being produced at the early stages of drug discovery. This rapid increase in the number of chemicals to be classified results in a greater need for to acquire alternative methods for the prediction of toxicity. Quantitative StructureActivity Rela

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3

Lanevskij, Kiril. "Absorption and Tissue Distribution of Drug-Like Compounds: Quantitative Structure-Activity Relationship Analysis." Doctoral thesis, Lithuanian Academic Libraries Network (LABT), 2011. http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2011~D_20111003_114235-89858.

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The objective of this work was to develop mechanistic quantitative structure activity relationship models that would facilitate the assessment of drug properties related to their absorption and distribution in the body. The analysis involved several parameters reflecting the rate of passive diffusion across brain endothelium and intestinal epithelium, and thermodynamic constants related to drug distribution between plasma and tissues. Permeation through cellular transport barriers was modeled by nonlinear equations relating the passive diffusion rate to physicochemical properties of drugs: lip

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4

Diaz-Perez, Maria-Jose. "Quantitative structure-activity relationship (QSAR) study of the effect of steroids on DNA replication." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp03/NQ50291.pdf.

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5

Ahlberg, Helgee Ernst. "Improving drug discovery decision making using machine learning and graph theory in QSAR modeling." Göteborg : Dept. of Chemistry, University of Gothenburg, 2010. http://gupea.ub.gu.se/dspace/handle/2077/21838.

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6

Stanforth, Robert William. "Extending K-Means clustering for analysis of quantitative structure activity relationships (QSAR)." Thesis, Birkbeck (University of London), 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.500005.

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A Quantitative Structure-Activity Relationship (QSAR) study is an attempt to model some biological activity over a collection of chemical compounds in terms of their structural properties A QSAR model may be constructed through (typically linear) multivariate regression analysis of the biological activity data against a number of features or 'descriptors' of chemical structure. As with any regression model, there are a number of issues emerging in real applications, including (a) domain of applicability of the model, (b) validation of the model within its domain of applicability, and (c) possi

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7

Ruark, Christopher Daniel. "Quantitative Structure-Activity Relationships for Organophosphates Binding to Trypsin and Chymotrypsin." Wright State University / OhioLINK, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=wright1278010674.

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8

Wang, Fang. "Chlorine Contribution to Quantitative Structure and Activity Relationship Models of Disinfection By-Products' Quantum Chemical Descriptors and Toxicities." FIU Digital Commons, 2009. http://digitalcommons.fiu.edu/etd/174.

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Quantitative Structure-Activity Relationship (QSAR) has been applied extensively in predicting toxicity of Disinfection By-Products (DBPs) in drinking water. Among many toxicological properties, acute and chronic toxicities of DBPs have been widely used in health risk assessment of DBPs. These toxicities are correlated with molecular properties, which are usually correlated with molecular descriptors. The primary goals of this thesis are: 1) to investigate the effects of molecular descriptors (e.g., chlorine number) on molecular properties such as energy of the lowest unoccupied molecular orbi

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9

Andersson, Patrik. "Physico-chemical characteristics and quantitative structure-activity relationships of PCBs." Doctoral thesis, Umeå University, Chemistry, 2000. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-17.

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<p>The polychlorinated biphenyls (PCBs) comprise a group of 209 congeners varying in the number of chlorine atoms and substitution patterns. These compounds tend to be biomagnified in foodwebs and have been shown to induce an array of effects in exposed organisms. The structural characteristics of the PCBs influence their potency as well as mechanism of action. In order to assess the biological potency of these compounds a multi-step quantitative structure-activity relationship (QSAR) procedure was used in the project described in this thesis.</p><p>The ultraviolet absorption (UV) spectra were

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10

Peng, Xiaoling. "Methods of variable selection and their applications in quantitative structure-property relationship (QSPR)." HKBU Institutional Repository, 2005. http://repository.hkbu.edu.hk/etd_ra/594.

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11

Harris, Dana N. "Quantitative structure activity relationships of monamine oxidase catalyzed oxidation of 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine analogs." Thesis, Virginia Tech, 1996. http://hdl.handle.net/10919/44451.

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Studies into the quantitative structure act! Vlty relationships of rate s of I-methyl-4-phenyl-l,2,3,6-tetrahydropyridine oxidation catalyzed by monoamine oxidases A and B were performed to elucidate active site substrate conformation and oxidation mechanisms. Plotting experimental kinetic activity against molecular properties obtained by experiment and by computational chemistry methods demonstrated correlations with lipophilic, steric, and electronic factors. Compounds studied were 4-aryloxy analogs, 4- aromatic heterocycle analogs, and 4-phenyl analogs. The conformer with phenyl ring to tet

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12

Magdziarz, Tomasz. "Sektorowy formalizm porównawczej analizy powierzchni cząsteczkowej (s-CoMSA) - zastosowanie do modelowania zależności struktura-aktywność." Doctoral thesis, Katowice : Uniwersytet Śląski, 2007. http://hdl.handle.net/20.500.12128/5132.

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Celem pracy jest: Opracowanie nowej metody obliczania deskryptorów cząsteczkowych s-CoMSA (ang. sector-comparative molecular surface analysis); w metodzie tej przestrzeń cząsteczkowa jest dzielona za zbiór sześciennych sektorów, ● Szeroko rozumiana optymalizacja metody s-CoMSA, ● Analiza QSAR oraz SAR wybranych szeregów związków aktywnych biologicznie z wykorzystaniem metody s-CoMSA oraz innych metod 3D-QSAR. W zakres pracy wchodzi: Opracowanie formalizmu metody s-CoMSA, ● Zaprogramowanie procedur analizy s-CoMSA, ● Badanie modeli s-CoMSA aktywności biologicznej wybranych szeregów zw

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13

Andersson, Karl. "Characterization of Biomolecular Interactions Using a Multivariate Approach." Doctoral thesis, Uppsala : Acta Universitatis Upsaliensis : Univ.-bibl. [distributör], 2004. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-4322.

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14

Bonano, Julie S. "Structural Determinants of Abuse-Related Neurochemical and Behavioral Effects of Para-Substituted Methcathinone Analogs in Rats." VCU Scholars Compass, 2015. http://scholarscompass.vcu.edu/etd/3911.

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Methcathinone (MCAT) is the β-ketone analog of methamphetamine, and like its amphetamine analog, MCAT functions as a monoamine releaser that selectively promotes the release of dopamine (DA) and norepinephrine (NE) over serotonin (5-HT). MCAT produces amphetamine-like psychostimulant effects and is classified as a Schedule I drug of abuse by the United States Drug Enforcement Administration (DEA). Recently, synthetic MCAT analogs have emerged as designer drugs of abuse in Europe and the United States and have been marketed under deceptively benign names like “bath salts” in an attempt to evade

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15

Hobocienski, Bryan Christopher. "Locality-Dependent Training and Descriptor Sets for QSAR Modeling." The Ohio State University, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=osu1577716259011585.

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16

Ribeiro, Taisa Pereira Piacentini. "Estudo teórico (modelagem molecular e QSAR) de compostos quinolínicos com atividade herbicida." Universidade Estadual do Oeste do Paraná, 2017. http://tede.unioeste.br/handle/tede/2964.

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Submitted by Rosangela Silva (rosangela.silva3@unioeste.br) on 2017-08-30T20:10:51Z No. of bitstreams: 2 TAISA PEREIRA PIACENTINI RIBEIRO.pdf: 3904493 bytes, checksum: 479855c30863d881e3a40de6b85ca548 (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5)<br>Made available in DSpace on 2017-08-30T20:10:51Z (GMT). No. of bitstreams: 2 TAISA PEREIRA PIACENTINI RIBEIRO.pdf: 3904493 bytes, checksum: 479855c30863d881e3a40de6b85ca548 (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) Previous issue date: 2017-02-09<br>The search for new herbici

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17

Baldasare, Corey Adam. "Quantum Chemical pK_a Estimation of Carbon Acids, Saturated Alcohols, and Ketones via Quantitative Structure-Activity Relationships." Wright State University / OhioLINK, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=wright1598550823525731.

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18

Alencar, Filho Edilson Beserra de. "Estudos da relação quantitativa estrutura-atividade (QSAR) de adutos de Morita-Baylis-Hillman bioativos contra Leishmania amazonensis." Universidade Federal da Paraíba, 2012. http://tede.biblioteca.ufpb.br:8080/handle/tede/7163.

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Made available in DSpace on 2015-05-14T13:21:44Z (GMT). No. of bitstreams: 1 arquivototal.pdf: 4637140 bytes, checksum: f9c50e9a2115f5a805442d163ed54f1e (MD5) Previous issue date: 2012-12-14<br>Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPES<br>The Morita-Baylis-Hillman Adducts (MBHA) is a class of molecules studied by our research group on synthetic, theoretical and bioactivity aspects. In this work, we present Quantitative Structure-Activity Relationship (QSAR) models involving 32 aromatic MBHA. Initially, the most stable conformations of thirty-two MBHA were inve

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19

Ishiki, Hamilton Mitsugu. "Relações quantitativas entre estrutura química e atividade biológica (QSAR/QSAR-3D) de compostos com potencial atividade antituberculose." Universidade de São Paulo, 2005. http://www.teses.usp.br/teses/disponiveis/46/46135/tde-25042016-172925/.

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A tuberculose (TB) é uma doença causada pelo Mycobacterium tuberculosis. De acordo com estimativas da Organização Mundial da Saúde, a tuberculose é responsável pela morte de ~2 a 3 milhões de pessoas/ano no mundo e nos próximos 15 anos cerca de 1 bilhão de pessoas deverão ser infectadas, e destas, aproximadamente 35 milhões deverão morrer. Apesar de existirem vários medicamentos sendo utilizados no tratamento da doença, constatasse o crescimento no número de casos devido, principalmente, às variedades resistentes do M. tuberculosis. Considerando-se o aparecimento de cepas resistentes em TB, re

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20

Tavares, Leoberto Costa. "Efeitos de substituintes sobre a polaridade do grupo carbonila e a atividade anestésica local de N.N - [(dimetilamino) metil benzamidas para substituídas." Universidade de São Paulo, 1987. http://www.teses.usp.br/teses/disponiveis/9/9138/tde-24082012-123202/.

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Preparou-se, neste trabalho, nove cloridratos de N,N- [(dimetilamino)metil]benzamidas-p-X-substituidas em que X = N02, Br, Cl, I, F, H, CH3, OCH3 e N(CH3)2, SÉRIE II, ainda não descritos na literatura, a partir das respectivas bases, SÉRIE I. Os compostos obtidos foram identificados por seus espectros de I.V e RMN1H, e suas purezas determinadas por análise elementar e ponto de fusão. A seguir, determinou-se os valores de vC=O (cm-l ) em HCCl3, como medida de sua polaridade tanto para os compostos da SÉRIE I como para os da SÉRIE II. A aplicação da equação de HAMMETT, simples e expandida, aos

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21

Stenberg, Mia. "In silico tools in risk assessment : of industrial chemicals in general and non-dioxin-like PCBs in particular." Doctoral thesis, Umeå universitet, Kemiska institutionen, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-50609.

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Industrial chemicals in European Union produced or imported in volumes above 1 tonne annually, necessitate a registration within REACH. A common problem, concerning these chemicals, is deficient information and lack of data for assessing the hazards posed to human health and the environment. Animal studies for the type of toxicological information needed are both expensive and time consuming, and to that an ethical aspect is added. Alternative methods to animal testing are thereby requested. REACH have called for an increased use of in silico tools for non-testing data as structure-activity re

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22

Raminelli, Cristiano. "Estudo da relação quantitativa entre a estrutura química e atividade citotóxica de séries de derivados de bases de Mannich." Universidade de São Paulo, 2001. http://www.teses.usp.br/teses/disponiveis/46/46135/tde-27032019-103221/.

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Bases de Mannich têm sido sintetizadas como pró-fármacos de cetonas α,β-insaturadas, 22, 20 sendo estas importantes no tratamento do câncer. 20 Assim, toma-se de interesse o desenvolvimento de estudos de QSAR envolvendo bases de Mannich com propriedades citotóxicas e/ou anticâncer, contribuindo-se, para o entendimento da(s) interação(ões) destes compostos (agentes alquilantes) no sistema biológico. 40, 5, 36, 53 Neste trabalho, destinado a dissertação de mestrado, foram preparadas e purificadas por métodos triviais descritos na literatura 8 47 duas séries de derivados de bases de Man

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23

Jover, Modrego Jesús. "Aplicació de la metodologia QSPR al càlcul de propietats de compostos inorgànics i de sistemes multicomponents." Doctoral thesis, Universitat de Barcelona, 2008. http://hdl.handle.net/10803/665934.

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En esta tesis se ha utilizado la metodología QSPR para calcular las propiedades de diferentes compuestos y sistemas complejos que no habían estudiados anteriormente. En concreto, se han establecido modelos que permiten el cálculo de la viscosidad y la tensión superficial, en estado líquido, y la entalpía de formación en fase gas para conjuntos de compuestos organometálicos de fórmula general MRnXm, en la que M puede ser un metal, semimetal o no metal de los grupos 12 al 16 de la tabla periódica; los grupos R corresponden a sustituyentes orgánicos alquílicos, arílicos, etc.; y los ligandos term

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24

Chen, Jonathan Jun Feng. "Data Mining/Machine Learning Techniques for Drug Discovery: Computational and Experimental Pipeline Development." University of Akron / OhioLINK, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=akron1524661027035591.

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25

Furay, Victor James. "Toxicity, quantitative structure-activity relationships (QSARS) and metabolism of chloroaromatic compounds in flatfish." Thesis, King's College London (University of London), 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.307578.

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26

Bagchi, Bhaskar. "Quantum chemical calculation and structure activity relationship of bioactive terpenoids." Thesis, University of North Bengal, 2016. http://ir.nbu.ac.in/handle/123456789/2762.

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27

Li, Ju-Yun. "Quantitative structure-activity relationship studies in medicinal chemistry." Case Western Reserve University School of Graduate Studies / OhioLINK, 1995. http://rave.ohiolink.edu/etdc/view?acc_num=case1062596938.

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Gironés, Torrent Xavier. "Funcions densitat i semblança molecular quàntica: nous desenvolupaments i aplicacions." Doctoral thesis, Universitat de Girona, 2002. http://hdl.handle.net/10803/8023.

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La present tesi, tot i que emmarcada dins de la teoria de les Mesures Semblança Molecular Quántica (MQSM), es deriva en tres àmbits clarament definits:<br/>- La creació de Contorns Moleculars de IsoDensitat Electrònica (MIDCOs, de l'anglès Molecular IsoDensity COntours) a partir de densitats electròniques ajustades.<br/>- El desenvolupament d'un mètode de sobreposició molecular, alternatiu a la regla de la màxima semblança.<br/>- Relacions Quantitatives Estructura-Activitat (QSAR, de l'anglès Quantitative Structure-Activity Relationships).<br/>L'objectiu en el camp dels MIDCOs és l'aplicació d

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29

FAN, WEIGUO. "USING MOLECULAR SIMILARITY ANALYSIS FOR STRUCTURE-ACTIVITY RELATIONSHIP STUDIES." Kent State University / OhioLINK, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=kent1353964351.

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30

Michielan, Lisa. "Advance Methodologies in Linear and Nonlinear Quantitative Structure-Activity Relationships (QSARs): from Drug Design to In Silico Toxicology Applications." Doctoral thesis, Università degli studi di Padova, 2010. http://hdl.handle.net/11577/3422242.

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Novel computational strategies are continuously being demanded by the pharmaceutical industry to assist, improve and speed up the drug discovery process. In this scenario chemoinformatics provide reliable mathematical tools to derive quantitative structure-activity relationships (QSARs), able to describe the correlation between molecular descriptors and various experimental profiles of the compounds. In the last years, nonlinear machine learning approaches have demonstrated a noteworthy predictive capability in several QSAR applications, confirming their superiority over the traditional linear

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31

Ren, Xin. "Quantitative structure-activity relationship based virtual screening for novel androgen receptor antagonists." Thesis, University of British Columbia, 2012. http://hdl.handle.net/2429/43293.

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Androgen receptor (AR) plays a critical role in prostate cancer development and progression. All current therapeutic AR inhibitors modulate the receptor via direct binding to its Hormone Binding Site (HBS). Despite the identification of other small molecule binding areas on the AR surface including Activation Function 2 (AF2), binding function 3 (BF3), and N-terminal domain (NTD), HBS continues to be the major target site for AR antagonists (even though this site is prone to resistant mutations). Thus, there is a high need for the identification and development of novel antagonists targeting H

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32

Santos, Victor Hugo Jacks Mendes dos. "Uma perspectiva da modelagem QSPR para triagem/desenho de catalisadores para a s?ntese de carbonatos oleoqu?micos." Pontif?cia Universidade Cat?lica do Rio Grande do Sul, 2018. http://tede2.pucrs.br/tede2/handle/tede/8260.

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Submitted by PPG Engenharia e Tecnologia de Materiais (engenharia.pg.materiais@pucrs.br) on 2018-08-27T20:28:46Z No. of bitstreams: 1 Uma perspectiva da modelagem QSPR para triagem-desenho de catalisadores para a s?ntese de carbona.pdf: 5038129 bytes, checksum: cd9bae4ba9eacd711c360bc304996732 (MD5)<br>Approved for entry into archive by Sheila Dias (sheila.dias@pucrs.br) on 2018-08-28T12:42:24Z (GMT) No. of bitstreams: 1 Uma perspectiva da modelagem QSPR para triagem-desenho de catalisadores para a s?ntese de carbona.pdf: 5038129 bytes, checksum: cd9bae4ba9eacd711c360bc304996732 (MD5)<br>Made

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Cypcar, Christopher Charles. "Investigation of structure-property relationships of nylon 6-co-7 and linear alkyl model amide compounds and molecular modeling quantitative structure-property relationship (QSPR) for glass temperature predictions." Aix-Marseille 3, 1997. http://www.theses.fr/1997AIX30035.

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Peron, Jean-Marie. "Quantitative structure activity relationship analysis of anti-oxidants with central nervous system therapeutic potential." Thesis, King's College London (University of London), 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.271327.

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Luis, Alconero Patricia. "Intensificación del proceso de absorción de dióxido de azufre mediante contacto no dispersivo y líquidos iónicos." Doctoral thesis, Universidad de Cantabria, 2009. http://hdl.handle.net/10803/10693.

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La intensificación de procesos consiste en el desarrollo de equipos y técnicas innovadoras que ofrecen mejoras sustanciales en el proceso, principalmente mediante la disminución del volumen del equipo, consumo de energía o generación de residuos, dando lugar a tecnologías más baratas, seguras y sostenibles. Esta tesis enfatiza la intensificación de procesos como estrategia en la recuperación de dióxido de azufre mediante el empleo de la tecnología de membranas y de líquidos iónicos como absorbente con objeto de eliminar las pérdidas de disolvente.La intensificación del proceso se lleva a cabo

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Martínez, Brito Izacar Jesús. "Quantitative structure fate relationships for multimedia environmental analysis." Doctoral thesis, Universitat Rovira i Virgili, 2010. http://hdl.handle.net/10803/8590.

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Key physicochemical properties for a wide spectrum of chemical pollutants are unknown. This thesis analyses the prospect of assessing the environmental distribution of chemicals directly from supervised learning algorithms using molecular descriptors, rather than from multimedia environmental models (MEMs) using several physicochemical properties estimated from QSARs. Dimensionless compartmental mass ratios of 468 validation chemicals were compared, in logarithmic units, between: a) SimpleBox 3, a Level III MEM, propagating random property values within statistical distributions of widely reco

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Jaafar, Mohd Zuli. "Chemometrics and pattern recognition methods with applications to environmental and quantitative structure-activity relationship studies." Thesis, University of Bristol, 2011. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.541608.

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Marsden-Jones, Siân Catherine. "The application of quantitative structure activity relationship models to the method development of countercurrent chromatography." Thesis, Brunel University, 2016. http://bura.brunel.ac.uk/handle/2438/12598.

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A fundamental challenge for liquid-liquid separation techniques such as countercurrent chromatography (CCC)and centrifugal partition chromatography (CPC), is the swift, efficient selection of the two phase solvent system containing more than two solvents, for the purification of pharmaceuticals and other molecules. A purely computational model that could predict the optimal solvent systems for separation using just molecular structure would be ideal for this task. The experimental value being predicted is the partition coefficient (Kd), which is the concentration of the compound in one phase d

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Chen, Rena Zhanglei. "Development, validation and uncertainty analysis of quantitative structure and activity relationship models for Log P of disinfection by-products." FIU Digital Commons, 2009. http://digitalcommons.fiu.edu/etd/2145.

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Hydrophobicity as measured by Log P is an important molecular property related to toxicity and carcinogenicity. With increasing public health concerns for the effects of Disinfection By-Products (DBPs), there are considerable benefits in developing Quantitative Structure and Activity Relationship (QSAR) models capable of accurately predicting Log P. In this research, Log P values of 173 DBP compounds in 6 functional classes were used to develop QSAR models, by applying 3 molecular descriptors, namely, Energy of the Lowest Unoccupied Molecular Orbital ( ELUMO), Number of Chlorine (NCl) and Numb

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40

Wang, Shaomeng. "Quantitative structure activity relationship study of anti-Mycobacterium avium agents and the calculation of some physico-chemical properties of organic compounds." Case Western Reserve University School of Graduate Studies / OhioLINK, 1993. http://rave.ohiolink.edu/etdc/view?acc_num=case1056656561.

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41

Santos, Elba Vieira Mustafa dos. "Estudo da relação quantitativa entre a estrutura química e a atividade antimicrobiana de cloretos de N,N[(dimetilamino)etil] benzoatos para e meta substituídos avaliada contra Saccharomyces cerevisiae (BY4741) e Escherichia coli (DH5α)." Universidade de São Paulo, 2009. http://www.teses.usp.br/teses/disponiveis/46/46135/tde-22062009-110721/.

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No presente trabalho, destinado a tese de doutorado, desenvolvemos um estudo da relação entre a estrutura química e atividade antimicrobiana de duas séries, a saber: Série I - quatorze cloretos N,N[(dimetilamino)etil]-benzoatos para-substituídos, onde R4 = H, CH3, C2H5, nC4H9, tC4H9, OCH3, nOC4H9, COCH3, Cl, CN, NO2, OC6H13, SO2Me, CF3 (compostos I.1 a I.14) e Série II - quatorze cloretos meta-substituídos onde R3 = H, -CH3, -OCH3, -OC2H5, -OC4H9, -F, -Cl, -Br, -I, -NO2, -CN, -CF3, -N(CH3)2, SO2CH3 (compostos II.1. a II.14). Os compostos haviam sido sintetizados anteriormente no grupo (Amaral

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Bloyet, Nicolas. "Caractérisation et plongement de sous-graphes colorés : application à la construction de modèles structures à activité (QSAR)." Thesis, Lorient, 2019. http://www.theses.fr/2019LORIS546.

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Dans le domaine de la chimie, il est intéressant de pouvoir estimer des propriétés physico- chimiques de molécules, notamment pour des applications industrielles. Celles-ci sont difficiles à estimer par simulations physique, présentant une complexité temporelle prohibitive. L'émergence des données (publiques ou privées) ouvre toutefois de nouvelles perspectives pour le traitement de ces problèmes par des méthodes statistiques et d'apprentissage automatique. La principale difficulté réside dans la caractérisation des molécules : celles-ci s'apparentent davantage à un réseau d'atomes (autrement

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Girschick, Tobias [Verfasser], Burkhard [Akademischer Betreuer] Rost, and Stefan [Akademischer Betreuer] Kramer. "Enhanced Small Molecule Similarity for Quantitative Structure-Activity Relationship Modeling and Cheminformatics Applications / Tobias Girschick. Gutachter: Burkhard Rost ; Stefan Kramer. Betreuer: Burkhard Rost." München : Universitätsbibliothek der TU München, 2014. http://d-nb.info/1052995357/34.

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Gaudin, Théophile. "Développement de modèles QSPR pour la prédiction et la compréhension des propriétés amphiphiles des tensioactifs dérivés de sucre." Thesis, Compiègne, 2016. http://www.theses.fr/2016COMP2318/document.

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Les tensioactifs dérivés de sucres représentent la principale famille de tensioactifs bio-sourcés et constituent de bons candidats pour substituer les tensioactifs dérivés du pétrole puisqu'ils sont issus de ressources renouvelables et peuvent être autant, voire plus performants dans diverses applications, comme la formulation (détergents, cosmétiques,…), la récupération assistée du pétrole ou des minéraux, etc. Différentes propriétés amphiphiles permettent de caractériser la performance des tensioactifs dans de telles applications, comme la concentration micellaire critique, la tension de sur

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Buss, Joan L. "Mechanism of hydrolysis-activation of the cardioprotective antioxidant dexrazoxane and identification of more effective analogs by development of a quantitative structure-activity relationship describing imide hydrolysis." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp02/NQ31967.pdf.

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Cardon, Sébastien. "Étude quantitative du rôle spécifique de glycosaminoglycanes dans le mécanisme d'internalisation de l'homéoprotéine engrailed 2." Thesis, Paris Sciences et Lettres (ComUE), 2017. http://www.theses.fr/2017PSLEE041.

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Les homéoprotéines sont des facteurs de transcription importants au cours du développement des organismes vivants, capables notamment de voyager de cellule en cellule. Ces protéines comportent une longue extrémité N-terminale désordonnée, suivie de trois hélices α séparées par une boucle et un tour. Des études de relations structure-activité ont montré que des domaines cationiques (riches en K et R) particuliers dans ces protéines sont responsables de ces propriétés de transfert cellulaire leur permettant d’être secrétées et internalisées dans les cellules. Ces processus impliquent que ces pro

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Ruark, Christopher Daniel. "The Guinea Pig Model For Organophosphate Toxicology and Therapeutic Development." Wright State University / OhioLINK, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=wright1432890247.

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Rando, Daniela Gonçales. "Quimioterápicos potencialmente ativos em endemias tropicais e tuberculose: estudos de QSAR na série de 5-nitroderivados benzidrazídicos e o planejamento de pró-fármacos de ação prolongada." Universidade de São Paulo, 2005. http://www.teses.usp.br/teses/disponiveis/9/9138/tde-31082017-152110/.

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Malária, doença de Chagas e leishmaniose, consideradas doenças negligenciadas, e tuberculose, infecção bacteriana reemergente, que grassa em diversas regiões do mundo, constituem-se grandes desafios médico-sociais para os países acometidos. Nitroderivados são substâncias utilizadas na terapêutica como antimicrobianos de amplo espectro. O mecanismo de ação proposto para estes compostos engloba a redução do grupo nitro por nitrorredutases inespecíficas, levando à produção de radicais livres. Estes, altamente reativos, reagiriam, por sua vez, com macromoléculas, organelas, membranas e mesmo ácido

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Da, Chenxiao. "The Development and Applications of the HINT Scoring Function: Exploring Colchicine-Site Anticancer Agents and Tautomerism." VCU Scholars Compass, 2013. http://scholarscompass.vcu.edu/etd/3002.

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The overall aim of this work was to apply HINT, an empirical scoring function based on the understanding of hydrophobicity, to analyze and predict the binding affinities and biological activities of colchicine-site anticancer agents. The second, concurrent aim was to improve the scoring function by incorporating tautomerism within the modeling process. Our belief is that proper evaluation of tautomeric forms for small molecules will improve performance of virtual screening. The novel pyrrole-based compounds targeting the colchicine site were docked into the receptor using HINT as a rescoring

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Gbeddy, Gustav Kudjoe Seyram. "Transformation and degradation of organic pollutants on urban road surfaces." Thesis, Queensland University of Technology, 2020. https://eprints.qut.edu.au/203905/15/9514791_gustav_gbeddy_thesis.pdf.

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This thesis is an important milestone in understanding the transformation and degradation processes of polycyclic aromatic hydrocarbons (PAHs). PAHs are indicator organic pollutants in urban road dust and some of their transformed products are extremely hazardous. Analytical methods were developed and optimized to comprehensively measure PAHs and their transformed products. The optimized method and relevant statistical techniques were used to assess the ultraviolet photon driven processes of the pollutants. A novel risk assessment approach was developed to evaluate the carcinogenic health risk

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