Abstract
Experimental and theoretical structural studies of 5-amino-3-methylisoxazolo-4-carboxylic acid p-chlorophenylamide were performed. This compound belongs to a new class of isoxazole derivatives exhibiting promising immunological activity. The crystallographic structure was measured and compared with theoretical calculations for the investigated compound. The theoretical analyses were performed using Kohn–Sham density functional theory (DFT) with the B3LYP hybrid exchange-correlation energy functional and 6-311+G(d,p) basis set. The solvent effect was included using the SCRF/PCM method with water (ε=78) as a solvent. Topological analysis was performed in terms of Bader's theory of atoms in molecules, yielding molecular parameters for quantum molecular similarity investigations.
Figure The SCRF/PCM map of electrostatic potential around the molecule: light grey isosurface at +0.5 a.u., dark grey at −0.05 a.u.
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Acknowledgments
The calculations presented in this work were performed on the computers of the Wrocław Centre for Networking and Supercomputing (WCSS) and of the Kraków Academic Computer Centre "ACK Cyfronet" (Grant KBN/SGI/UWrocl/078/2001). This work was supported by State Committee for Scientific Research (Grant 3 P05F 012 24).
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Jezierska, A., Panek, J., Ryng, S. et al. An experimental and theoretical structural study of 5-amino-3-methylisoxazolo-4-carboxylic acid p-chlorophenylamide. J Mol Model 9, 159–163 (2003). https://doi.org/10.1007/s00894-003-0125-1
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DOI: https://doi.org/10.1007/s00894-003-0125-1