Liabilities associated with the formation of “hard” electrophiles in reactive metabolite trapping screens

AS Kalgutkar - Chemical research in toxicology, 2017 - ACS Publications
Soft electrophiles (eg, epoxides, quinones, quinone-imines, quinone-methides, etc.)
generated via the oxidative bioactivation of phenyl, phenolic, amino-, and alkylphenolic …

Future of toxicology metabolic activation and drug design: challenges and opportunities in chemical toxicology

TA Baillie - Chemical research in toxicology, 2006 - ACS Publications
The issue of chemically reactive drug metabolites is one of growing concern in the
pharmaceutical industry inasmuch as some, but not all, reactive intermediates are believed …

Comparison of the reactivity of trapping reagents toward electrophiles: cysteine derivatives can be bifunctional trapping reagents

K Inoue, K Fukuda, T Yoshimura… - Chemical research in …, 2015 - ACS Publications
Trapping reagents are powerful tools to detect unstable reactive metabolites. There are a
variety of trapping reagents based on chemical reactivity to electrophiles, and we …

Reactive metabolites: current and emerging risk and hazard assessments

RA Thompson, EM Isin, MO Ogese… - Chemical Research …, 2016 - ACS Publications
Although idiosyncratic adverse drug reactions are rare, they are still a major concern to
patient safety. Reactive metabolites are widely accepted as playing a pivotal role in the …

Analytical strategies for the screening and evaluation of chemically reactive drug metabolites

B Wen, WL Fitch - Expert opinion on drug metabolism & toxicology, 2009 - Taylor & Francis
Background: Metabolic activation leading to formation of chemically reactive drug
metabolites is a long-standing issue for drug development inasmuch as some, but not all …

Approaches for minimizing metabolic activation of new drug candidates in drug discovery

S Kumar, K Mitra, K Kassahun, TA Baillie - Adverse Drug Reactions, 2010 - Springer
A large body of circumstantial evidence suggests that metabolic activation of drug
candidates to chemically reactive electrophilic metabolites that are capable of covalently …

Designing around structural alerts in drug discovery

AS Kalgutkar - Journal of Medicinal Chemistry, 2019 - ACS Publications
Cumulative research over several decades has implicated the involvement of reactive
metabolites in many idiosyncratic adverse drug reactions (IADRs). Consequently,“avoidance …

Managing the liabilities arising from structural alerts: a safe philosophy for medicinal chemists

PJ Edwards, C Sturino - Current medicinal chemistry, 2011 - ingentaconnect.com
Bioactivation of xenobiotics can, in certain circumstances, result in the formation of reactive
electrophilic species. These reactive metabolites may covalently modify proteins and …

Practical approaches to resolving reactive metabolite liabilities in early discovery

D Dalvie, AS Kalgutkar, W Chen - Drug Metabolism Reviews, 2015 - Taylor & Francis
Idiosyncratic toxicity is one of the principal causes for withdrawal of marketed drugs after
launch. Circumstantial evidence suggests that several drug-induced adverse effects are a …

Predicting toxicities of reactive metabolite–positive drug candidates

AS Kalgutkar, D Dalvie - Annual review of pharmacology and …, 2015 - annualreviews.org
Because of the inability to predict and quantify the risk of idiosyncratic adverse drug
reactions (IADRs) and because reactive metabolites (RMs) are thought to be responsible for …