Halogen atoms in the modern medicinal chemistry: hints for the drug design
Abstract
A significant number of drugs and drug candidates in clinical development are halogenated structures. For a long time, insertion of halogen atoms on hit or lead compounds was predominantly performed to exploit their steric effects, through the ability of these bulk atoms to occupy the binding site of molecular targets. However, halogens in drug - target complexes influence several processes rather than steric aspects alone. For example, the formation of halogen bonds in ligand-target complexes is now recognized as a kind of intermolecular interaction that favorably contributes to the stability of ligand-target complexes. This paper is aimed at introducing the fascinating versatility of halogen atoms. It starts summarizing the prevalence of halogenated drugs and their structural and pharmacological features. Next, we discuss the identification and prediction of halogen bonds in protein-ligand complexes, and how these bonds should be exploited. Interesting results of halogen insertions during the processes of hit-to-lead or lead-to-drug conversions are also detailed. Polyhalogenated anesthetics and protein kinase inhibitors that bear halogens are analyzed as cases studies. Thereby, this review serves as one guide for the virtual screening of libraries containing halogenated compounds and may be a source of inspiration for the medicinal chemists.
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From a synthesis point-of-view, the emergence of brorphine analogues differing in the halogen substituent seems not only feasible (only involving a one-step procedure), but may actually be likely, as halogenation is an important tool in drug optimization.
“Specifically, from a synthesis point-of-view, the emergence of brorphine analogues differing in the halogen substituent seems not only feasible (only involving a one-step procedure), but may actually be likely, as halogenation is an important tool in drug optimization (Hernandes et al., 2010; Kurczab et al., 2019; Xu et al., 2014).”
From Elucidating the harm potential of brorphine analogues as new synthetic opioids: Synthesis, in vitro, and in vivo characterization (2024) · cites this paper as Hernandes et al., 2010
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- Authors
- Hernandes, M., Cavalcanti, S. M., Moreira, D. R., de Azevedo Junior, W., & Leite, A. C.
- Affiliations
- Universidade Federal de Pernambuco (BR)
- Corresponding author
- Leite, Ana Cristina
- Venue
- Current Drug Targets
- Publisher
- Bentham Science Publishers Ltd.
- Published
- 2010-03-01
- Volume
- 11
- Issue
- 3
- Pages
- 303-314
- ISSN
- 1389-4501 (ISSN-L)
- OpenAlex
- W2105058945
- Cited by
- 723
- References
- 76
- Citations by year
- 2026: 53 · 2025: 70 · 2024: 71 · 2023: 57 · 2022: 58 · 2021: 66 · 2020: 54 · 2019: 65 · 2018: 31 · 2017: 32 · 2016: 34 · 2015: 27 · 2014: 29 · 2013: 32 · 2012: 25
- FWCI
- 17.58
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Current Drug Targets (publishedVersion)
- PubMed (publishedVersion)
- Topics
- Physical Sciences › Chemistry › Physical and Theoretical Chemistry › Crystallography and molecular interactions
- Physical Sciences › Computer Science › Computational Theory and Mathematics › Computational Drug Discovery Methods
- Physical Sciences › Chemistry › Inorganic Chemistry › Vanadium and Halogenation Chemistry
- Keywords
- halogen bonding, hit-to-lead optimization, protein-ligand complex, protein kinase inhibitors, drug design
- MeSH terms
- Animals, Binding Sites, Chemistry, Pharmaceutical, Halogens, Humans, Ligands, Models, Molecular, Protein Binding, Drug Design, Drug Delivery Systems
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