Abstract
The pKa values for two compounds (LQM303 and LQM314) with antihypertensive properties were determined by UV spectroscopy (T = 310.15 K and I = 0.15 M) and by Capillary Zone Electrophoresis (T = 310.15 K and I = 0.05 M), using the program SQUAD. The partition coefficients (logP) between water and 1-octanol have also been determined experimentally, demonstrating that both compounds fulfill with the physicochemical parameter logP ≤ 5 of Lipinski´s rules. Calculations on the framework of Density Functional Theory have allowed identifying the functional group related to each pKa for each compound.
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