2006
DOI: 10.1007/s11224-006-9120-3
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A partial least squares and principal component regression study of quinone compounds with trypanocidal activity

Abstract: A quantitative structure-activity relationship (QSAR) study of 19 quinone compounds with trypanocidal activity was performed by Partial Least Squares (PLS) and Principal Component Regression (PCR) methods with the use of leave-one-out crossvalidation procedure to build the regression models. The trypanocidal activity of the compounds is related to their first cathodic potential (Ep c1 ). The regression PLS and PCR models built in this study were also used to predict the Ep c1 of six new quinone compounds. The … Show more

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Cited by 23 publications
(17 citation statements)
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“…The most stable geometries obtained by this process were further optimized at Hatree-Fock level (HF/6-31G) followed by Density Functional Theory level (B3LYP/6-31G), using Gaussian 03 [29]. The DFT/B3LYP functional have been chosen because it is known from literature that this method leads to quite satisfactory results for the analysis of geometries and energies [7,30]. The electronic descriptors were obtained after the final optimization.…”
Section: Methodsmentioning
confidence: 99%
“…The most stable geometries obtained by this process were further optimized at Hatree-Fock level (HF/6-31G) followed by Density Functional Theory level (B3LYP/6-31G), using Gaussian 03 [29]. The DFT/B3LYP functional have been chosen because it is known from literature that this method leads to quite satisfactory results for the analysis of geometries and energies [7,30]. The electronic descriptors were obtained after the final optimization.…”
Section: Methodsmentioning
confidence: 99%
“…The B3LYP functional was chosen because it leads to quite satisfactory results for the analysis of geometries and energies. 38,39 Besides, the balanced basis set Def2-TZVPP was chosen because it produces similar errors along all the elements from the periodic table. 40 Using the optimized geometry, 3D descriptors were calculated in Pentacle software.…”
Section: D-qsar Studymentioning
confidence: 99%
“…In the next study, Molfetta et al [34] studied 19 quinones with trypanocidal activity against Trypanosoma cruzi, a microorganism which causes a parasitic infection known as Chagas disease. As trypanocidal activity is related to their first cathodic potential (Ep c1 ) [35], the Partial Least Squares (PLS) and Principal Component Regression (PCR) methods were used to determine the relation between descriptors and the Ep c1 .…”
Section: Issuementioning
confidence: 99%