Matheus P. Freitas

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Few variables were selected from a pool of calculated Dragon descriptors through three different feature selection methods, namely genetic algorithm (GA), successive projections algorithm (SPA), and fuzzy rough set ant colony optimization (fuzzy rough set ACO). Each set of selected descriptors was regressed against the bioactivities of a series of glycogen(More)
Anti-HIV compounds comprise inhibitors of some different biological targets, like HIV protease, integrase and reverse transcriptase enzymes, and entry and fusion proteins. These drugs are usually administered in drug cocktails (AIDS cocktails); the use of a single multi-target anti-HIV-1 compound against AIDS would avoid a more exhaustive therapeutic(More)
The use of theoretical calculation to determine structural properties of fulvate-metal complex (zinc, copper and iron) is here related. The species were proposed in the ratio 1:1 and 2:1 for which the molecular structure was obtained through the semi-empirical method PM6. The calculation of thermodynamic stability ( $$\Delta H_{(aq.)}^{0}$$ Δ H ( a q . ) 0(More)
Renin inhibitors pertain to a new generation class of antihypertensive agents. There are only a few studies on the computational modeling of such class of compounds and only one available drug in the market used as renin inhibitor for the treatment of hypertension, aliskiren. The present study reports the QSAR modeling of the activities of a series of(More)
Theoretical models for exploring the antischistosomal activity of a dataset of 18 synthetic neolignans are built using the multivariate image analysis applied to structure-activity relationships (MIA-SAR) approach. The obtained models were validated using the accuracy (Acc) in leave-one-out cross-validation, external validation and Y-randomization(More)
For a decade, the multivariate image analysis applied to quantitative structure-activity relationship (MIA-QSAR) approach has been successfully used in the modeling of several chemical and biological properties of chemical compounds. However, the key pitfall of this method has been its exclusive applicability to congeneric datasets due to the prerequisite(More)
Although the proposed mechanisms are reasonable, there are still many questions about the 5-enolpyruvyl shikimate-3-phosphate (EPSP) synthase mechanism that are difficult to answer by experimental means alone. EPSP synthase is a key enzyme in the shikimic acid pathway, which is found only in plants and some micro-organisms and is also molecular target of(More)
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