Abstract

To date, the concept of DNA-based asymmetric catalysis has been successfully applied to various synthetic transformations by way of hybrid catalysts involving either an intercalator or an integrated ligand anchored through supramolecular interactions. We report here a new anchoring strategy based on the well-known groove-binder Hoechst 33258. The interaction between calf thymus DNA (ct-DNA) and poly[d(A-T)2] with a series of Hoechst 33258-derived ligands was studied by UV–vis absorption spectroscopy, thermal melting analysis, fluorescence emission, CD spectroscopy, mass spectrometry, and molecular docking. The results clearly show that a groove-binding anchoring strategy can be envisioned for DNA-based asymmetric catalysis, offering additional mechanistic insight on how the intrinsic chirality of DNA can be transferred to a reaction product. Most importantly, this new anchoring strategy offers interesting compartmentalization possibilities and provides a new way to reverse the enantioselectivity outcome o...

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