Correlation between the stereochemistry and bioactivity in octahedral rhodium prolinato complexes

Rajaratnam, R, Martin, E. K., Dorr, M, Harms, K, Casini, Angela ORCID: https://orcid.org/0000-0003-1599-9542 and Meggars, E 2015. Correlation between the stereochemistry and bioactivity in octahedral rhodium prolinato complexes. Inorganic Chemistry 54 (16) , pp. 8111-8120. 10.1021/acs.inorgchem.5b01349

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Abstract

Controlling the relative and absolute configuration of octahedral metal complexes constitutes a key challenge that needs to be overcome in order to fully exploit the structural properties of octahedral metal complexes for applications in the fields of catalysis, materials sciences, and life sciences. Herein, we describe the application of a proline-based chiral tridentate ligand to decisively control the coordination mode of an octahedral rhodium(III) complex. We demonstrate the mirror-like relationship of synthesized enantiomers and differences between diastereomers. Further, we demonstrate, using the established pyridocarbazole pharmacophore ligand as part of the organometallic complexes, the importance of the relative and absolute stereochemistry at the metal toward chiral environments like protein kinases. Protein kinase profiling and inhibition data confirm that the proline-based enantiopure rhodium(III) complexes, despite having all of the same constitution, differ strongly in their selectivity properties despite their unmistakably mutual origin. Moreover, two exemplary compounds have been shown to induce different toxic effects in an ex vivo rat liver model.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Chemistry
Subjects:	Q Science > QD Chemistry
Publisher:	American Chemical Society
ISSN:	0020-1669
Last Modified:	31 Oct 2022 10:58
URI:	https://orca.cardiff.ac.uk/id/eprint/86914

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