Escape from planarity in fragment-based drug discovery: A physicochemical and 3D property analysis of synthetic 3D fragment libraries

David J. Hamilton, Tom Dekker, Hanna F. Klein, Guido V. Janssen, Maikel Wijtmans, Peter O'Brien, Iwan J.P. de Esch*

*Corresponding author for this work

Research output: Contribution to journalReview articlepeer-review

Abstract

Fragment-based drug discovery (FBDD) has grown into a well-established approach in the pursuit of new therapeutics. Key to the success of FBDD is the low molecular complexity of the initial hits and this has resulted in fragment libraries that mainly contain compounds with a two-dimensional (2D) shape. In an effort to increase the chemical diversity and explore the impact of increased molecular complexity on the hit rate of fragment library screening, several academic and industrial groups have designed and synthesised novel fragments with a three-dimensional (3D) shape. This review provides an overview of 25 synthetic 3D fragment libraries from the recent literature. We calculate and compare physicochemical properties and descriptors that are typically used to measure molecular three-dimensionality such as fraction sp3 (Fsp3), plane of best fit (PBF) scores and principal moment of inertia (PMI) plots. Although the libraries vary widely in structure and properties, some key common features can be identified which may have utility in designing the next generation of 3D fragment libraries.

Original languageEnglish
Pages (from-to)77-90
Number of pages14
JournalDrug Discovery Today: Technologies
Volume38
Early online date17 Jun 2021
DOIs
Publication statusPublished - 9 Dec 2021

Bibliographical note

Funding Information:
We acknowledge funding from the European Union's Framework Programme for Research and Innovation Horizon 2020 (2014–2020) under the Marie-Skoldowska-Curie grant agreement number 675899 (“Fragment based drug discovery Network, FRAGNET”), the Dutch Research Council under Applied and Engineering Sciences grant number 18019(“Ready for growth: a new generation of highly versatile fragment libraries”) and The Royal Society (Industry Fellowship, INFR1191028).

Funding Information:
We acknowledge funding from the European Union’s Framework Programme for Research and Innovation Horizon 2020 (2014–2020) under the Marie-Skoldowska-Curie grant agreement number 675899 (“Fragment based drug discovery Network, FRAGNET”), the Dutch Research Council under Applied and Engineering Sciences grant number   18019 (“Ready for growth: a new generation of highly versatile fragment libraries”) and The Royal Society (Industry Fellowship, INFR1191028 ).

Publisher Copyright:
© 2021

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