Incorporation of metabolically stable ketones into a small molecule probe to increase potency and water solubility

[Display omitted] Introducing a reactive carbonyl to a scaffold that does not otherwise have an electrophilic functionality to create a reversible covalent inhibitor is a potentially useful strategy for enhancing compound potency. However, aldehydes are metabolically unstable, which precludes the us...

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Published in:Bioorganic & medicinal chemistry letters Vol. 25; no. 21; pp. 4787 - 4792
Main Authors: Larraufie, Marie-Helene, Yang, Wan Seok, Jiang, Elise, Thomas, Ajit G., Slusher, Barbara S., Stockwell, Brent R.
Format: Journal Article
Language:English
Published: England Elsevier Ltd 01-11-2015
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Abstract [Display omitted] Introducing a reactive carbonyl to a scaffold that does not otherwise have an electrophilic functionality to create a reversible covalent inhibitor is a potentially useful strategy for enhancing compound potency. However, aldehydes are metabolically unstable, which precludes the use of this strategy for compounds to be tested in animal models or in human clinical studies. To overcome this limitation, we designed ketone-based functionalities capable of forming reversible covalent adducts, while displaying high metabolic stability, and imparting improved water solubility to their pendant scaffold. We tested this strategy on the ferroptosis inducer and experimental therapeutic erastin, and observed substantial increases in compound potency. In particular, a new carbonyl erastin analog, termed IKE, displayed improved potency, solubility and metabolic stability, thus representing an ideal candidate for future in vivo cancer therapeutic applications.
AbstractList Introducing a reactive carbonyl to a scaffold that does not otherwise have an electrophilic functionality to create a reversible covalent inhibitor is a potentially useful strategy for enhancing compound potency. However, aldehydes are metabolically unstable, which precludes the use of this strategy for compounds to be tested in animal models or in human clinical studies. To overcome this limitation, we designed ketone-based functionalities capable of forming reversible covalent adducts, while displaying high metabolic stability, and imparting improved water solubility to their pendant scaffold. We tested this strategy on the ferroptosis inducer and experimental therapeutic erastin, and observed substantial increases in compound potency. In particular, a new carbonyl erastin analog, termed IKE, displayed improved potency, solubility and metabolic stability, thus representing an ideal candidate future in vivo cancer therapeutic applications.
Introducing a reactive carbonyl to a scaffold that does not otherwise have an electrophilic functionality to create a reversible covalent inhibitor is a potentially useful strategy for enhancing compound potency. However, aldehydes are metabolically unstable, which precludes the use of this strategy for compounds to be tested in animal models or in human clinical studies. To overcome this limitation, we designed ketone-based functionalities capable of forming reversible covalent adducts, while displaying high metabolic stability, and imparting improved water solubility to their pendant scaffold. We tested this strategy on the ferroptosis inducer and experimental therapeutic erastin, and observed substantial increases in compound potency. In particular, a new carbonyl erastin analog, termed IKE, displayed improved potency, solubility and metabolic stability, thus representing an ideal candidate for future in vivo cancer therapeutic applications.
[Display omitted] Introducing a reactive carbonyl to a scaffold that does not otherwise have an electrophilic functionality to create a reversible covalent inhibitor is a potentially useful strategy for enhancing compound potency. However, aldehydes are metabolically unstable, which precludes the use of this strategy for compounds to be tested in animal models or in human clinical studies. To overcome this limitation, we designed ketone-based functionalities capable of forming reversible covalent adducts, while displaying high metabolic stability, and imparting improved water solubility to their pendant scaffold. We tested this strategy on the ferroptosis inducer and experimental therapeutic erastin, and observed substantial increases in compound potency. In particular, a new carbonyl erastin analog, termed IKE, displayed improved potency, solubility and metabolic stability, thus representing an ideal candidate for future in vivo cancer therapeutic applications.
Author Slusher, Barbara S.
Larraufie, Marie-Helene
Stockwell, Brent R.
Jiang, Elise
Thomas, Ajit G.
Yang, Wan Seok
AuthorAffiliation d Department of Neurology, Johns Hopkins Medicine, Baltimore, United States
b Department of Chemistry, Columbia University, New York, New York 10027, United States
c Brain Science Institute, Johns Hopkins Medicine, Baltimore, United States
e Howard Hughes Medical Institute, Columbia University, New York, New York 10027, United States
a Department of Biological Sciences, Columbia University, 550 West 120th Street, 1208 Northwest Corner Building, MC 4846 New York, New York 10027, United States
AuthorAffiliation_xml – name: e Howard Hughes Medical Institute, Columbia University, New York, New York 10027, United States
– name: c Brain Science Institute, Johns Hopkins Medicine, Baltimore, United States
– name: b Department of Chemistry, Columbia University, New York, New York 10027, United States
– name: a Department of Biological Sciences, Columbia University, 550 West 120th Street, 1208 Northwest Corner Building, MC 4846 New York, New York 10027, United States
– name: d Department of Neurology, Johns Hopkins Medicine, Baltimore, United States
Author_xml – sequence: 1
  givenname: Marie-Helene
  surname: Larraufie
  fullname: Larraufie, Marie-Helene
  organization: Department of Biological Sciences, Columbia University, 550 West 120th Street, 1208 Northwest Corner Building, MC 4846, New York, NY 10027, United States
– sequence: 2
  givenname: Wan Seok
  surname: Yang
  fullname: Yang, Wan Seok
  organization: Department of Biological Sciences, Columbia University, 550 West 120th Street, 1208 Northwest Corner Building, MC 4846, New York, NY 10027, United States
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  surname: Jiang
  fullname: Jiang, Elise
  organization: Department of Chemistry, Columbia University, New York, NY 10027, United States
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BackLink https://www.ncbi.nlm.nih.gov/pubmed/26231156$$D View this record in MEDLINE/PubMed
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Keywords Covalent
Ferroptosis
Erastin
Metabolic stability
Reactive carbonyl
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Snippet [Display omitted] Introducing a reactive carbonyl to a scaffold that does not otherwise have an electrophilic functionality to create a reversible covalent...
Introducing a reactive carbonyl to a scaffold that does not otherwise have an electrophilic functionality to create a reversible covalent inhibitor is a...
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SubjectTerms Cell Line, Tumor
Cell Proliferation - drug effects
Covalent
Dose-Response Relationship, Drug
Erastin
Ferroptosis
Humans
Ketones - chemistry
Ketones - metabolism
Metabolic stability
Molecular Structure
Piperazines - chemical synthesis
Piperazines - chemistry
Piperazines - pharmacology
Reactive carbonyl
Small Molecule Libraries - chemical synthesis
Small Molecule Libraries - chemistry
Small Molecule Libraries - pharmacology
Solubility
Structure-Activity Relationship
Water - chemistry
Title Incorporation of metabolically stable ketones into a small molecule probe to increase potency and water solubility
URI https://dx.doi.org/10.1016/j.bmcl.2015.07.018
https://www.ncbi.nlm.nih.gov/pubmed/26231156
https://search.proquest.com/docview/1722423075
https://pubmed.ncbi.nlm.nih.gov/PMC4653046
Volume 25
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