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Multi-site binding of drugs and natural products in an entropically-favorable, heteroleptic receptor

DOI: 10.1021/jacs.9b03776 DOI Help

Authors: Felix J. Rizzuto (University of Cambridge) , John P. Carpenter (University of Cambridge) , Jonathan R. Nitschke (University of Cambridge)
Co-authored by industrial partner: No

Type: Journal Paper
Journal: Journal Of The American Chemical Society

State: Published (Approved)
Published: May 2019
Diamond Proposal Number(s): 11397 , 15768

Abstract: The cavities of artificial receptors are defined by how their components fit together. The encapsulation of specific molecules can thus be engineered by considering geometric principles; however, intermolecular interactions and steric fit scale with receptor size, such that the ability to bind multiple guests from a specific class of compounds remains a current challenge. By employing metal-organic self-assembly, we have prepared a triangular prism from two different ligands that is capable of binding more than twenty different natural products, drugs and steroid derivatives within its prolate cavity. Encapsulation inflates the host, enhancing its ability to bind other guests in peripheral pockets, and thus enabling our system to bind combinations of different drug and natural product cargoes in different locations simultaneously. This new mode of entropically-favorable self-assembly thus enables central encapsulation to amplify guest binding events around the periphery of an artificial receptor.

Subject Areas: Chemistry, Medicine

Instruments: I19-Small Molecule Single Crystal Diffraction