Studies on Log Po/w of Quinoxaline di-N-Oxides: A Comparison of RP-HPLC Experimental and Predictive Approaches

Autor: James A. Platts, Antonio Monge, Ignacio Aldana, Mauro Ravera, Enrique Torres, Silvia Pérez-Silanes, Elisabetta Gabano, Elsa Moreno
Jazyk: angličtina
Rok vydání: 2011
Předmět:
Zdroj: Molecules, Vol 16, Iss 9, Pp 7893-7908 (2011)
Druh dokumentu: article
ISSN: 1420-3049
DOI: 10.3390/molecules16097893
Popis: As reported in our previous papers, a series of quinoxaline-2-carboxamide 1,4-di-N-oxide derivatives were synthesized and studied as anti-tuberculosis agents. Here, the capability of the shake-flask method was studied and the retention time (expressed as log K) of 20 compounds were determined by RP-HPLC analysis. We found that the prediction of log P by the RP-HPLC analysis can result in a high accuracy and can replace the shake-flask method avoiding the experimental problems presented by quinoxaline di-N-oxides. The studied compounds were subjected to the ALOGPS module with the aim of comparing experimental log Po/w values and predicted data. Moreover, a preliminary in silico screening of the QSAR relationship was made confirming the influence of reduction peak potential, lipophilicity, H-bond donor capacity and molecular dimension descriptors on anti-tuberculosis activity.
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