نتایج جستجو برای: qsar

تعداد نتایج: 3811  

Journal: :Journal of chemical information and modeling 2006
Jaroslaw Polanski Andrzej Bak Rafal Gieleciak Tomasz Magdziarz

Quantitative Structure Activity Relationship (QSAR) is a term describing a variety of approaches that are of substantial interest for chemistry. This method can be defined as indirect molecular design by the iterative sampling of the chemical compounds space to optimize a certain property and thus indirectly design the molecular structure having this property. However, modeling the interactions...

Journal: :CoRR 2013
Doreswamy Chanabasayya M. Vastrad

Antitubercular activity of 5-nitrofuran-2-yl Derivatives series were subjected to Quantitative Structure Activity Relationship (QSAR) Analysis with an effort to derive and understand a correlation between the biological activity as response variable and different molecular descriptors as independent variables. QSAR models are built using 40 molecular descriptor dataset. Different statistical re...

2015
Thomas Scior Jorge Lozano-Aponte Subhash Ajmani Eduardo Hernández-Montero Fabiola Chávez-Silva Emanuel Hernández-Núñez Rosa Moo-Puc Andres Fraguela-Collar Gabriel Navarrete-Vázquez

In view of the serious health problems concerning infectious diseases in heavily populated areas, we followed the strategy of lead compound diversification to evaluate the near-by chemical space for new organic compounds. To this end, twenty derivatives of nitazoxanide (NTZ) were synthesized and tested for activity against Entamoeba histolytica parasites. To ensure drug-likeliness and activity ...

2009
Darpan KAUSHIK

Insulin resistance is associated with a defect in protein tyrosine phosphorylation in the insulin signal transduction cascade. PTPase enzyme dephosphorylates the active form of insulin receptor and thus attenuates its tyrosine kinase activity, therefore the need of a potent PTPase inhibitor is the reason for the present Quantitative Structure-Activity relationship (QSAR) was performed. QSAR has...

Journal: :European journal of medicinal chemistry 2010
Indrani Mitra Achintya Saha Kunal Roy

The present work deals with the chemometric modeling of antioxidant molecules belonging to the class of flavone derivatives employing the quantitative structure-activity relationship (QSAR) technique. A QSAR model was initially built based on the Fujita-Ban method with the training set molecules. Due to the inability of the Fujita-Ban type model to predict satisfactorily the activity of the tes...

Journal: :CoRR 2013
Doreswamy Chanabasayya M. Vastrad

Antitubercular activity of Sulfathiazole Derivitives series were subjected to Quantitative Structure Activity Relationship (QSAR) Analysis with an attempt to derive and understand a correlation between the Biologically Activity as dependent variable and various descriptors as independent variables. QSAR models generated using 28 compounds. Several statistical regression expressions were obtaine...

2015
C. Gopi Mohan Shikhar Gupta

Alzheimer’s Disease (AD) is a multifactorial neurological syndrome with the combination of aging, genetic, and environmental factors triggering the pathological decline. Interestingly, the importance of the Acetylcholinesterase (AChE) enzyme has increased due to its involvement in the β-amyloid peptide fibril formation during AD pathogenesis. In silico technique, QSAR has proven its usefulness ...

Journal: :Journal of chemical information and modeling 2008
Dmitry A. Konovalov Nigel Sim Eric Deconinck Yvan Vander Heyden Danny Coomans

A new variable selection wrapper method named the Monte Carlo variable selection (MCVS) method was developed utilizing the framework of the Monte Carlo cross-validation (MCCV) approach. The MCVS method reports the variable selection results in the most conventional and common measure of statistical hypothesis testing, the P-values, thus allowing for a clear and simple statistical interpretation...

2014
Swapnil Chavan Ian A. Nicholls Björn C. G. Karlsson Annika M. Rosengren Davide Ballabio Viviana Consonni Roberto Todeschini

A series of 436 Munro database chemicals were studied with respect to their corresponding experimental LD50 values to investigate the possibility of establishing a global QSAR model for acute toxicity. Dragon molecular descriptors were used for the QSAR model development and genetic algorithms were used to select descriptors better correlated with toxicity data. Toxic values were discretized in...

2009
Chanin Nantasenamat Thanakorn Naenna Virapong Prachayasittikul

Quantitative structure-activity relationship (QSAR) modeling pertains to the construction of predictive models of biological activities as a function of structural and molecular information of a compound library. The concept of QSAR has typically been used for drug discovery and development and has gained wide applicability for correlating molecular information with not only biological activiti...

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