A comparative study on the experimentally derived electron densities of three protease inhibitor model compounds

Grabowsky, Simon; Pfeuffer, Thomas; Morgenroth, Wolfgang; Paulmann, Carsten; Schirmeister, Tanja; Luger, Peter (2008). A comparative study on the experimentally derived electron densities of three protease inhibitor model compounds. Organic & biomolecular chemistry, 6(13), pp. 2295-2307. Royal Society of Chemistry 10.1039/b802831a

Text 005_Grabowsky2008_OrgBiomolChem.pdf - Published Version Restricted to registered users only Available under License Publisher holds Copyright. Download (943kB)

In order to contribute to a rational design of optimised protease inhibitors which can covalently block the nucleophilic amino acids of the proteases' active sites, we have chosen three model compounds (aziridine , oxirane and acceptor-substituted olefin ) for the examination of their electron-density distribution. Therefore, high-resolution low temperature (9, 27 and 100 K) X-ray diffraction experiments on single-crystals were carried out with synchrotron and conventional X-radiation. It could be shown by the analysis of the electron density using mainly Bader's Theory of Atoms in Molecules, Volkov's EPMM method for interaction energies, electrostatic potentials and Gatti's Source Function that aziridine is most suitable for drug design in this field. A regioselective nucleophilic attack at carbon atom C1 could be predicted and even hints about the reaction's stereoselectivity could be obtained. Moreover, the comparison between two data sets of aziridine (conventional X-ray source vs. synchrotron radiation) gave an estimate concerning the reproducibility of the quantitative results.

Interest & Impact

Downloads

4 since deposited on 05 Feb 2020
0 in the past 12 months

Citations

5 Citations in Web of Science ®
6 Citations in Scopus

Search

in Google Scholar™

Services

Actions (login required)

Edit item

Actions (login required)

Edit item