Palbociclib Glucuronide—a key metabolite in drug metabolism research and bioanalysis
Palbociclib N-β-D-Glucuronide Sodium Salt is one of the major glucuronide-conjugated metabolites of the targeted anticancer drug Palbociclib. As an important reference standard in the development of small molecule inhibitors and pharmacokinetic studies, this compound plays an indispensable role in understanding drug clearance pathways, assessing potential drug interactions, and performing precise bioanalysis.
Palbociclib N-β-D-Glucuronide Sodium Salt is one of the major glucuronide-conjugated metabolites of the targeted anticancer drug Palbociclib. As an important reference standard in the development of small molecule inhibitors and pharmacokinetic studies, this compound plays an indispensable role in understanding drug clearance pathways, assessing potential drug interactions, and performing precise bioanalysis.
Chemical Information
Chemical name: Palbociclib N-β-D-Glucuronide Sodium Salt
Generic name: Palbociclib Glucuronide
Chemical formula: C₃₀H₃₆N₇NaO₈
Molecular weight: 645.64 g/mol
Category: Metabolite Glucuronide
Structural features
This compound is the direct product of palbociclib's phase II metabolic reaction in the human body. Its structure has the following salient features:
Glucuronide binding site: The specific nitrogen atom (N-) in the palbociclib molecule is covalently bonded to β-D-glucuronic acid through a glycosidic bond, forming a polar glucuronide. This modification is a typical reaction catalyzed by uridine diphosphate glucuronosyltransferase (UGT) in the liver.
Significantly enhanced water solubility: The introduction of a highly hydrophilic glucuronic acid group greatly reduces the fat solubility of the original drug palbociclib, thereby greatly improving the water solubility of metabolites and promoting their excretion from the body through bile or urine.
Sodium salt form: Existing in the sodium salt form ensures that the compound has good solubility and stability in buffer solutions or biological matrices, and is convenient for experimental operation and storage.
Biological activity differences: Generally, the pharmacological activity of glucuronidated metabolites is significantly reduced or eliminated compared with the original drug, but as a product of the main metabolic pathway, it is crucial to study the overall exposure, clearance mechanism and potential enzyme-mediated interactions of the drug.
Main applications and value
Pharmacokinetics and metabolism studies
As a confirmed metabolite standard, it is an essential reagent for quantitative determination of the concentration of palbociclib and its metabolites in biological samples (such as plasma, urine, bile). It is used to draw a complete drug metabolism spectrum, clarify its absorption, distribution, metabolism and excretion processes in the body, and provide a basis for clinical medication plans.
Drug interaction assessment
The glucuronidation process of palbociclib may be affected by other drugs (inducers or inhibitors of UGT enzymes). This standard can be used for in vitro or in vivo studies, to evaluate and predict potential drug-drug interaction risks, and to guide safe clinical combination use.
Toxicology and Safety Evaluation
Studying the formation and accumulation of metabolites is an important part of drug safety evaluation. Helps understand metabolic pathway saturation, species differences, and sources of potential metabolism-related toxicity.
Development and validation of bioanalytical methods
In biological analysis methods based on liquid chromatography-mass spectrometry technology, this compound is an indispensable calibrator and internal reference standard for high specificity and high sensitivity quantitative analysis, ensuring the accuracy and reliability of analysis results and meeting regulatory compliance requirements.
Phenotypic study of metabolic enzymes
can be used in in vitro experimental systems to identify the main UGT enzyme subtypes responsible for the glucuronidation reaction of palbociclib, which helps to understand individual metabolic differences from a mechanistic level.
Conclusion
Palbociclib N-β-D-Glucuronide Sodium Salt is not only the core substance in palbociclib drug metabolism research, but also an important bridge connecting medicinal chemistry, pharmacokinetics and clinical pharmacology. Its value in promoting precise bioanalysis, optimizing treatment options and ensuring drug safety makes it a key chemical entity in the modern innovative drug research and development chain.
The above information is provided by the editor of KASONS and is for scientific research only.