Summary
We have developed quantitative structure–activity relationship (QSAR) models for 44 non-nucleoside HIV-1 reverse transcriptase inhibitors (NNRTIs) of the pyridinone derivative type. The k nearest neighbor (kNN) variable selection approach was used. This method utilizes multiple descriptors such as molecular connectivity indices, which are derived from two-dimensional molecular topology. The modeling process entailed extensive validation including the randomization of the target property (Y-randomization) test and the division of the dataset into multiple training and test sets to establish the external predictive power of the training set models. QSAR models with high internal and external accuracy were generated, with leave-one-out cross-validated R2 (q2) values ranging between 0.5 and 0.8 for the training sets and R2 values exceeding 0.6 for the test sets. The best models with the highest internal and external predictive power were used to search the National Cancer Institute database. Derivatives of the pyrazolo[3,4-d]pyrimidine and phenothiazine type were identified as promising novel NNRTIs leads. Several candidates were docked into the binding pocket of nevirapine with the AutoDock (version 3.0) software. Docking results suggested that these types of compounds could be binding in the NNRTI binding site in a similar mode to a known non-nucleoside inhibitor nevirapine.
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Abbreviations
- AIDS:
-
Acquired immunodeficiency syndrome
- HIV:
-
Human immunodeficiency virus
- kNN:
-
k Nearest neighbor
- MZ:
-
MolConnZ
- NNRTIs:
-
Non-nucleoside reverse transcriptase inhibitors
- QSAR:
-
Quantitative structure–activity relationships
- RT:
-
Reverse transcriptase
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Medina-Franco, J.L., Golbraikh, A., Oloff, S. et al. Quantitative Structure–activity Relationship Analysis of Pyridinone HIV-1 Reverse Transcriptase Inhibitors using the k Nearest Neighbor Method and QSAR-based Database Mining. J Comput Aided Mol Des 19, 229–242 (2005). https://doi.org/10.1007/s10822-005-4789-8
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DOI: https://doi.org/10.1007/s10822-005-4789-8